diff --git a/docs/documentation.md b/docs/documentation.md index e6909647..a7d8d4e6 100644 --- a/docs/documentation.md +++ b/docs/documentation.md @@ -516,85 +516,85 @@ VMAware provides a convenient way to not only check for VMs, but also have the f | `VM::HYPERVISOR_BIT` | Check if hypervisor feature bit in CPUID ECX bit 31 is enabled (always false for physical CPUs) | 🐧🪟🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L4906) | | `VM::HYPERVISOR_STR` | Check for hypervisor brand string length (would be around 2 characters in a host machine) | 🐧🪟🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L4932) | | `VM::TIMER` | Check for timing anomalies in the system | 🐧🪟🍏 | 150% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5118) | -| `VM::THREAD_COUNT` | Check if there are only 1 or 2 threads, which is a common pattern in VMs with default settings, nowadays physical CPUs should have at least 4 threads for modern CPUs | 🐧🪟🍏 | 35% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7809) | -| `VM::MAC` | Check if mac address starts with certain VM designated values | 🐧 | 20% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5876) | -| `VM::TEMPERATURE` | Check for device's temperature | 🐧 | 20% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6727) | -| `VM::SYSTEMD` | Check result from systemd-detect-virt tool | 🐧 | 35% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5757) | -| `VM::CVENDOR` | Check if the chassis vendor is a VM vendor | 🐧 | 65% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5781) | -| `VM::CTYPE` | Check if the chassis type is valid (it's very often invalid in VMs) | 🐧 | 20% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5806) | -| `VM::DOCKERENV` | Check if /.dockerenv or /.dockerinit file is present | 🐧 | 30% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5824) | -| `VM::DMIDECODE` | Check if dmidecode output matches a VM brand | 🐧 | 55% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5839) | -| `VM::DMESG` | Check if dmesg output matches a VM brand | 🐧 | 55% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5982) | -| `VM::HWMON` | Check if /sys/class/hwmon/ directory is present. If not, likely a VM | 🐧 | 35% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6023) | -| `VM::DLL` | Check for VM-specific DLLs | 🪟 | 50% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8109) | -| `VM::HWMODEL` | Check if the sysctl for the hwmodel does not contain the "Mac" string | 🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7833) | -| `VM::WINE_FUNC` | Check if the function "wine_get_unix_file_name" is present and if the OS booted from a VHD container | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8140) | -| `VM::POWER_CAPABILITIES` | Check what power states are enabled | 🪟 | 45% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8166) | -| `VM::PROCESSES` | Check for any VM processes that are active | 🐧 | 40% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6738) | -| `VM::LINUX_USER_HOST` | Check for default VM username and hostname for linux | 🐧 | 10% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6033) | -| `VM::GAMARUE` | Check for Gamarue ransomware technique which compares VM-specific Window product IDs | 🪟 | 10% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8226) | +| `VM::THREAD_COUNT` | Check if there are only 1 or 2 threads, which is a common pattern in VMs with default settings, nowadays physical CPUs should have at least 4 threads for modern CPUs | 🐧🪟🍏 | 35% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7788) | +| `VM::MAC` | Check if mac address starts with certain VM designated values | 🐧 | 20% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5855) | +| `VM::TEMPERATURE` | Check for device's temperature | 🐧 | 20% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6706) | +| `VM::SYSTEMD` | Check result from systemd-detect-virt tool | 🐧 | 35% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5736) | +| `VM::CVENDOR` | Check if the chassis vendor is a VM vendor | 🐧 | 65% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5760) | +| `VM::CTYPE` | Check if the chassis type is valid (it's very often invalid in VMs) | 🐧 | 20% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5785) | +| `VM::DOCKERENV` | Check if /.dockerenv or /.dockerinit file is present | 🐧 | 30% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5803) | +| `VM::DMIDECODE` | Check if dmidecode output matches a VM brand | 🐧 | 55% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5818) | +| `VM::DMESG` | Check if dmesg output matches a VM brand | 🐧 | 55% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5961) | +| `VM::HWMON` | Check if /sys/class/hwmon/ directory is present. If not, likely a VM | 🐧 | 35% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6002) | +| `VM::DLL` | Check for VM-specific DLLs | 🪟 | 50% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8088) | +| `VM::HWMODEL` | Check if the sysctl for the hwmodel does not contain the "Mac" string | 🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7812) | +| `VM::WINE_FUNC` | Check if the function "wine_get_unix_file_name" is present and if the OS booted from a VHD container | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8119) | +| `VM::POWER_CAPABILITIES` | Check what power states are enabled | 🪟 | 45% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8145) | +| `VM::PROCESSES` | Check for any VM processes that are active | 🐧 | 40% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6717) | +| `VM::LINUX_USER_HOST` | Check for default VM username and hostname for linux | 🐧 | 10% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6012) | +| `VM::GAMARUE` | Check for Gamarue ransomware technique which compares VM-specific Window product IDs | 🪟 | 10% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8205) | | `VM::BOCHS_CPU` | Check for various Bochs-related emulation oversights through CPU checks | 🐧🪟🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L4960) | -| `VM::MAC_MEMSIZE` | Check if memory is too low for MacOS system | 🍏 | 15% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7869) | -| `VM::MAC_IOKIT` | Check MacOS' IO kit registry for VM-specific strings | 🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7902) | -| `VM::IOREG_GREP` | Check for VM-strings in ioreg commands for MacOS | 🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7999) | -| `VM::MAC_SIP` | Check for the status of System Integrity Protection and hv_mm_present | 🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8040) | -| `VM::VPC_INVALID` | Check for official VPC method | 🪟 | 75% | | 32-bit | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8335) | +| `VM::MAC_MEMSIZE` | Check if memory is too low for MacOS system | 🍏 | 15% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7848) | +| `VM::MAC_IOKIT` | Check MacOS' IO kit registry for VM-specific strings | 🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7881) | +| `VM::IOREG_GREP` | Check for VM-strings in ioreg commands for MacOS | 🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7978) | +| `VM::MAC_SIP` | Check for the status of System Integrity Protection and hv_mm_present | 🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8019) | +| `VM::VPC_INVALID` | Check for official VPC method | 🪟 | 75% | | 32-bit | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8314) | | `VM::SYSTEM_REGISTERS` | | | 50% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L1) | -| `VM::VMWARE_IOMEM` | Check for VMware string in /proc/iomem | 🐧 | 65% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6062) | -| `VM::VMWARE_IOPORTS` | Check for VMware string in /proc/ioports | 🐧 | 70% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6573) | -| `VM::VMWARE_SCSI` | Check for VMware string in /proc/scsi/scsi | 🐧 | 40% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6371) | -| `VM::VMWARE_DMESG` | Check for VMware-specific device name in dmesg output | 🐧 | 65% | Admin | | Disabled by default | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6390) | -| `VM::VMWARE_STR` | Check str assembly instruction method for VMware | 🪟 | 35% | | 32-bit | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8386) | -| `VM::VMWARE_BACKDOOR` | Check for official VMware io port backdoor technique | 🪟 | 100% | | 32-bit | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8411) | -| `VM::MUTEX` | Check for mutex strings of VM brands | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8472) | +| `VM::VMWARE_IOMEM` | Check for VMware string in /proc/iomem | 🐧 | 65% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6041) | +| `VM::VMWARE_IOPORTS` | Check for VMware string in /proc/ioports | 🐧 | 70% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6552) | +| `VM::VMWARE_SCSI` | Check for VMware string in /proc/scsi/scsi | 🐧 | 40% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6350) | +| `VM::VMWARE_DMESG` | Check for VMware-specific device name in dmesg output | 🐧 | 65% | Admin | | Disabled by default | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6369) | +| `VM::VMWARE_STR` | Check str assembly instruction method for VMware | 🪟 | 35% | | 32-bit | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8365) | +| `VM::VMWARE_BACKDOOR` | Check for official VMware io port backdoor technique | 🪟 | 100% | | 32-bit | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8390) | +| `VM::MUTEX` | Check for mutex strings of VM brands | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8451) | | `VM::THREAD_MISMATCH` | Check if the system's thread count matches the expected thread count for the detected CPU model | 🐧🪟🍏 | 50% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5040) | -| `VM::CUCKOO_DIR` | Check for cuckoo directory using crt and WIN API directory functions | 🪟 | 30% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8558) | -| `VM::CUCKOO_PIPE` | Check for Cuckoo specific piping mechanism | 🪟 | 30% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8614) | -| `VM::AZURE` | Check for default Azure hostname format (Azure uses Hyper-V as their base VM brand) | 🐧🪟 | 30% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6974) | -| `VM::DISPLAY` | Check for display configurations commonly found in VMs | 🪟 | 25% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8668) | -| `VM::DEVICE_STRING` | Check if bogus device string would be accepted | 🪟 | 25% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8690) | -| `VM::BLUESTACKS_FOLDERS` | Check for the presence of BlueStacks-specific folders | 🐧 | 5% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6078) | +| `VM::CUCKOO_DIR` | Check for cuckoo directory using crt and WIN API directory functions | 🪟 | 30% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8537) | +| `VM::CUCKOO_PIPE` | Check for Cuckoo specific piping mechanism | 🪟 | 30% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8593) | +| `VM::AZURE` | Check for default Azure hostname format (Azure uses Hyper-V as their base VM brand) | 🐧🪟 | 30% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6953) | +| `VM::DISPLAY` | Check for display configurations commonly found in VMs | 🪟 | 25% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8647) | +| `VM::DEVICE_STRING` | Check if bogus device string would be accepted | 🪟 | 25% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8669) | +| `VM::BLUESTACKS_FOLDERS` | Check for the presence of BlueStacks-specific folders | 🐧 | 5% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6057) | | `VM::CPUID_SIGNATURE` | Check for signatures in leaf 0x40000001 in CPUID | 🐧🪟🍏 | 95% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5068) | | `VM::KGT_SIGNATURE` | Check for Intel KGT (Trusty branch) hypervisor signature in CPUID | 🐧🪟🍏 | 80% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L5094) | -| `VM::QEMU_VIRTUAL_DMI` | Check for presence of QEMU in the /sys/devices/virtual/dmi/id directory | 🐧 | 40% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6159) | -| `VM::QEMU_USB` | Check for presence of QEMU in the /sys/kernel/debug/usb/devices directory | 🐧 | 20% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6188) | -| `VM::HYPERVISOR_DIR` | Check for presence of any files in /sys/hypervisor directory | 🐧 | 20% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6216) | -| `VM::UML_CPU` | Check for the "UML" string in the CPU brand | 🐧 | 80% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6264) | -| `VM::KMSG` | Check for any indications of hypervisors in the kernel message logs | 🐧 | 5% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6294) | -| `VM::VBOX_MODULE` | Check for a VBox kernel module | 🐧 | 15% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6348) | -| `VM::SYSINFO_PROC` | Check for potential VM info in /proc/sysinfo | 🐧 | 15% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6424) | -| `VM::DMI_SCAN` | Check for string matches of VM brands in the linux DMI | 🐧 | 50% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6446) | -| `VM::SMBIOS_VM_BIT` | Check for the VM bit in the SMBIOS data | 🐧 | 50% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6528) | -| `VM::PODMAN_FILE` | Check for podman file in /run/ | 🐧 | 5% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6558) | -| `VM::WSL_PROC` | Check for WSL or microsoft indications in /proc/ subdirectories | 🐧 | 30% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6590) | -| `VM::DRIVERS` | Check for VM-specific names for drivers | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8707) | -| `VM::DISK_SERIAL` | Check for serial numbers of virtual disks | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8805) | -| `VM::IVSHMEM` | Check for IVSHMEM device presence | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9044) | -| `VM::GPU_CAPABILITIES` | Check for GPU capabilities related to VMs | 🪟 | 45% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9150) | -| `VM::HANDLES` | Check for vm-specific devices | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9188) | -| `VM::QEMU_FW_CFG` | Detect QEMU fw_cfg interface. This first checks the Device Tree for a fw-cfg node or hypervisor tag, then verifies the presence of the qemu_fw_cfg module and firmware directories in sysfs. | 🐧 | 70% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6618) | -| `VM::VIRTUAL_PROCESSORS` | Check if the number of virtual and logical processors are reported correctly by the system | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9290) | -| `VM::HYPERVISOR_QUERY` | Check if a call to NtQuerySystemInformation with the 0x9f leaf fills a _SYSTEM_HYPERVISOR_DETAIL_INFORMATION structure | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9320) | -| `VM::AMD_SEV_MSR` | Check for AMD-SEV MSR running on the system | 🐧🍏 | 50% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6101) | -| `VM::VIRTUAL_REGISTRY` | Check for particular object directory which is present in Sandboxie virtual environment but not in usual host systems | 🪟 | 90% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9388) | -| `VM::FIRMWARE` | Check for VM signatures on all firmware tables | 🐧🪟 | 100% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7034) | -| `VM::FILE_ACCESS_HISTORY` | Check if the number of accessed files are too low for a human-managed environment | 🐧 | 15% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6648) | -| `VM::AUDIO` | Check if no waveform-audio output devices are present in the system | 🪟 | 25% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9482) | -| `VM::NSJAIL_PID` | Check if process status matches with nsjail patterns with PID anomalies | 🐧 | 75% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6675) | -| `VM::DEVICES` | Check for PCI vendor and device IDs that are VM-specific | 🐧🪟 | 95% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7453) | -| `VM::ACPI_SIGNATURE` | Check for VM-specific ACPI device signatures | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9590) | -| `VM::TRAP` | Check if after raising two traps at the same RIP, a hypervisor interferes with the instruction pointer delivery | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9735) | -| `VM::UD` | Check if no waveform-audio output devices are present in the system | 🪟 | 25% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9482) | -| `VM::BLOCKSTEP` | Check if a hypervisor does not properly restore the interruptibility state after a VM-exit in compatibility mode | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L10010) | -| `VM::DBVM_HYPERCALL` | Check if Dark Byte's VM is present | 🪟 | 150% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L10057) | -| `VM::BOOT_LOGO` | Check boot logo for known VM images | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L10176) | -| `VM::MAC_SYS` | Check for VM-strings in system profiler commands for MacOS | 🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8084) | -| `VM::KERNEL_OBJECTS` | Check for any signs of VMs in Windows kernel object entities | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L10278) | -| `VM::NVRAM` | Check for known NVRAM signatures that are present on virtual firmware | 🪟 | 100% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L10468) | -| `VM::EDID` | Check for non-standard EDID configurations | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L10907) | -| `VM::CPU_HEURISTIC` | Check whether the CPU is genuine and its reported instruction capabilities are not masked | 🪟 | 90% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L11163) | -| `VM::CLOCK` | Check the presence of system timers | 🪟 | 45% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L11632) | -| `VM::MSR` | Check for AMD-SEV MSR running on the system | 🐧🍏 | 100% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6101) | +| `VM::QEMU_VIRTUAL_DMI` | Check for presence of QEMU in the /sys/devices/virtual/dmi/id directory | 🐧 | 40% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6138) | +| `VM::QEMU_USB` | Check for presence of QEMU in the /sys/kernel/debug/usb/devices directory | 🐧 | 20% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6167) | +| `VM::HYPERVISOR_DIR` | Check for presence of any files in /sys/hypervisor directory | 🐧 | 20% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6195) | +| `VM::UML_CPU` | Check for the "UML" string in the CPU brand | 🐧 | 80% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6243) | +| `VM::KMSG` | Check for any indications of hypervisors in the kernel message logs | 🐧 | 5% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6273) | +| `VM::VBOX_MODULE` | Check for a VBox kernel module | 🐧 | 15% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6327) | +| `VM::SYSINFO_PROC` | Check for potential VM info in /proc/sysinfo | 🐧 | 15% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6403) | +| `VM::DMI_SCAN` | Check for string matches of VM brands in the linux DMI | 🐧 | 50% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6425) | +| `VM::SMBIOS_VM_BIT` | Check for the VM bit in the SMBIOS data | 🐧 | 50% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6507) | +| `VM::PODMAN_FILE` | Check for podman file in /run/ | 🐧 | 5% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6537) | +| `VM::WSL_PROC` | Check for WSL or microsoft indications in /proc/ subdirectories | 🐧 | 30% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6569) | +| `VM::DRIVERS` | Check for VM-specific names for drivers | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8686) | +| `VM::DISK_SERIAL` | Check for serial numbers of virtual disks | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8784) | +| `VM::IVSHMEM` | Check for IVSHMEM device presence | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9023) | +| `VM::GPU_CAPABILITIES` | Check for GPU capabilities related to VMs | 🪟 | 45% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9129) | +| `VM::HANDLES` | Check for vm-specific devices | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9167) | +| `VM::QEMU_FW_CFG` | Detect QEMU fw_cfg interface. This first checks the Device Tree for a fw-cfg node or hypervisor tag, then verifies the presence of the qemu_fw_cfg module and firmware directories in sysfs. | 🐧 | 70% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6597) | +| `VM::VIRTUAL_PROCESSORS` | Check if the number of virtual and logical processors are reported correctly by the system | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9269) | +| `VM::HYPERVISOR_QUERY` | Check if a call to NtQuerySystemInformation with the 0x9f leaf fills a _SYSTEM_HYPERVISOR_DETAIL_INFORMATION structure | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9299) | +| `VM::AMD_SEV_MSR` | Check for AMD-SEV MSR running on the system | 🐧🍏 | 50% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6080) | +| `VM::VIRTUAL_REGISTRY` | Check for particular object directory which is present in Sandboxie virtual environment but not in usual host systems | 🪟 | 90% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9367) | +| `VM::FIRMWARE` | Check for VM signatures on all firmware tables | 🐧🪟 | 100% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7013) | +| `VM::FILE_ACCESS_HISTORY` | Check if the number of accessed files are too low for a human-managed environment | 🐧 | 15% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6627) | +| `VM::AUDIO` | Check if no waveform-audio output devices are present in the system | 🪟 | 25% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9461) | +| `VM::NSJAIL_PID` | Check if process status matches with nsjail patterns with PID anomalies | 🐧 | 75% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6654) | +| `VM::DEVICES` | Check for PCI vendor and device IDs that are VM-specific | 🐧🪟 | 95% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L7432) | +| `VM::ACPI_SIGNATURE` | Check for VM-specific ACPI device signatures | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9569) | +| `VM::TRAP` | Check if after raising two traps at the same RIP, a hypervisor interferes with the instruction pointer delivery | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9714) | +| `VM::UD` | Check if no waveform-audio output devices are present in the system | 🪟 | 25% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9461) | +| `VM::BLOCKSTEP` | Check if a hypervisor does not properly restore the interruptibility state after a VM-exit in compatibility mode | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L9989) | +| `VM::DBVM_HYPERCALL` | Check if Dark Byte's VM is present | 🪟 | 150% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L10036) | +| `VM::BOOT_LOGO` | Check boot logo for known VM images | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L10155) | +| `VM::MAC_SYS` | Check for VM-strings in system profiler commands for MacOS | 🍏 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L8063) | +| `VM::KERNEL_OBJECTS` | Check for any signs of VMs in Windows kernel object entities | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L10257) | +| `VM::NVRAM` | Check for known NVRAM signatures that are present on virtual firmware | 🪟 | 100% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L10447) | +| `VM::EDID` | Check for non-standard EDID configurations | 🪟 | 100% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L10886) | +| `VM::CPU_HEURISTIC` | Check whether the CPU is genuine and its reported instruction capabilities are not masked | 🪟 | 90% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L11142) | +| `VM::CLOCK` | Check the presence of system timers | 🪟 | 45% | | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L11611) | +| `VM::MSR` | Check for AMD-SEV MSR running on the system | 🐧🍏 | 100% | Admin | | | [link](https://github.com/kernelwernel/VMAware/tree/main/src/vmaware.hpp#L6080) |
diff --git a/src/vmaware.hpp b/src/vmaware.hpp index 81126708..e32c31b6 100644 --- a/src/vmaware.hpp +++ b/src/vmaware.hpp @@ -58,10 +58,10 @@ * - struct for internal cpu operations => line 804 * - struct for internal memoization => line 3131 * - struct for internal utility functions => line 3338 - * - struct for internal core components => line 11848 + * - struct for internal core components => line 11827 * - start of VM detection technique list => line 4804 - * - start of public VM detection functions => line 12213 - * - start of externally defined variables => line 13000 + * - start of public VM detection functions => line 12192 + * - start of externally defined variables => line 12979 * * * ============================== EXAMPLE =================================== @@ -5205,7 +5205,8 @@ struct VM { * that the CPU takes to switch from user-mode (VMAware) to VMM (hypervisor), this latency is often called the "vmexit" latency * * To give the worst nightmare, VMAware runs all the aforementioned checks in parallel, trillions of times in a single loop, so the hypervisor finds a paradox: - * Either they downclock TSC (failing the local/global ratio checks), or either they pay the time debt (exposing the vmexit latency), they cant do both + * Either the hypervisor downclock TSC (failing the local/global ratio checks), or either the hypervisor pays the time debt (exposing the vmexit latency) + * Only solution? Maybe making the whole VM a 52% slower? Who knows... */ #if (MSVC) @@ -5214,8 +5215,6 @@ struct VM { #define COMPILER_BARRIER() asm volatile("" ::: "memory") #endif - // ================ INITIALIZATION STUFF ================ - if (util::is_running_under_translator()) { debug("TIMER: Running inside a binary translation layer"); return false; @@ -5236,6 +5235,7 @@ struct VM { } constexpr u64 ITER_XOR = 150000000ULL; + u64 actual_iters = ITER_XOR; // actual_iters is ITER_XOR + any extra XOR instructions vmaware could run before collecting enough cpuid samples constexpr size_t CPUID_ITER = 100; // per leaf // we try many leaves so that it's extremely heavy to recode every cpuid path to exit quickly enough so that it doesn't trigger the cycle threshold static constexpr unsigned int leaves[] = { @@ -5261,7 +5261,7 @@ struct VM { std::atomic state(0); std::atomic t1_start(0), t1_end(0); std::atomic t2_end(0); - std::vector samples(100000, 0); + std::vector samples(200000, 0); struct affinity_cookie { bool valid{ false }; @@ -5337,25 +5337,10 @@ struct VM { // the idea is to let rdtscp internally wait until cpuid is executed rather than using another memory barrier const u64 t2 = __rdtscp(&aux); - // ensure the read of t2 doesn't bleed into future instructions, also force vmx preemption timers to fire here + // ensure the read of t2 doesn't bleed into future instructions _mm_lfence(); - const u64 t3 = __rdtsc(); // capture tail - - // Create a dependency on regs so the cast above isn't ignored - (void)regs[0]; - - u64 delta = t2 - t1; - const u64 tail = t3 - t2; - - // normal tail (RDTSC + LFENCE) is about 20-40 cycles - // if tail is massive, it means the hypervisor paused execution AFTER the t2 measurement - // to restore the TSC offset. Since it had to hide it, now its trying to restore it - // so that it doesn't trigger our "global ratio" check (will be explained later) - if (tail > 500) { - delta += tail; - } - - return delta; + + return t2 - t1; #else // same logic of above unsigned int lo1, hi1, lo2, hi2, lo3, hi3; @@ -5372,21 +5357,11 @@ struct VM { COMPILER_BARRIER(); asm volatile("rdtscp" : "=a"(lo2), "=d"(hi2) :: "rcx", "memory"); - - // tail asm volatile("lfence" ::: "memory"); - asm volatile("rdtsc" : "=a"(lo3), "=d"(hi3) :: "memory"); const u64 t1 = (u64(hi1) << 32) | lo1; const u64 t2 = (u64(hi2) << 32) | lo2; - const u64 t3 = (u64(hi3) << 32) | lo3; - - u64 delta = t2 - t1; - const u64 tail = t3 - t2; - - if (tail > 500) { - delta += tail; - } + const u64 delta = t2 - t1; return delta; #endif @@ -5545,10 +5520,21 @@ struct VM { state.store(1, std::memory_order_release); volatile u64 x = 0xDEADBEEFCAFEBABEULL; - for (u64 i = 0; i < ITER_XOR; ++i) { + u64 i = 0; + for (; i < ITER_XOR; ++i) { x ^= i; x = (x << 1) ^ (x >> 3); } + + // Loop extensively without bottlenecking standard execution to guarantee Thread 2 hits the desired cpuid threshold limit + while (state.load(std::memory_order_acquire) == 1) { + for (int j = 0; j < 1000; ++j) { + x ^= i; + x = (x << 1) ^ (x >> 3); + ++i; + } + } + actual_iters = i; VMAWARE_UNUSED(x); const u64 end = __rdtsc(); @@ -5582,7 +5568,7 @@ struct VM { for (unsigned i = 0; i < CPUID_ITER; ++i) { const u64 now = __rdtsc(); - // If now < last, the hypervisor rewound the TSC + // If now < last, the hypervisor rewound the TSC too much, we ignore it and let it decrement this thread's TSC to be caught by ratio checks later if (now >= last) { acc += (now - last); } @@ -5591,27 +5577,26 @@ struct VM { if (idx < samples.size()) { u64 lat = cpuid(leaf); + // the gap check catches debt injected between our measurements (external window) if (now > prev_post) { u64 gap = now - prev_post; // If the gap is massive, the hypervisor dumped the debt here or is legitimate interrupt latency - // We pull it back into our latency measurement - if (gap > 1000) { // 1000 is generous for a loop latency + // we pull it back into our latency measurement + if (gap > 400) { // 500 is generous for loop latency lat += gap; } } - // Capture post immediately to track the end of this measurement + // capture post immediately to track the end of this measurement const u64 post = __rdtsc(); prev_post = post; - // If a VMX Preemption Timer is delayed (firing after cpuid returns to bypass t3 inside our cpuid lambda), - // OR if the hypervisor intercepts RDTSC to restore the time debt instead of CPUID, - // this outer total_overhead will include that hidden latency because it's at the end of this for loop - // this means that no matter where the time debt is restored, VMAware will always be able to see the hidden latency const u64 total_overhead = post - now; - if (total_overhead > (lat + 500)) { + // total_overhead catches debt injected inside the function call (internal window) + // together with the gap, its physically impossible for a hypervisor to hide the time debt + if (total_overhead > (lat + 400)) { lat = total_overhead; } @@ -5636,12 +5621,25 @@ struct VM { ++idx; + // Force Thread 1 to finalize when minimum sample quota is met + // this makes impossible for the hypervisor to pause thread 2 so that it only samples a few cpuid, thus only needed to downlock a few million TSC cycles + // enough to bypass ratio checks + if (idx == samples.size() && state.load(std::memory_order_relaxed) == 1) { + state.store(3, std::memory_order_release); + } + + // if thread1 finishes if (state.load(std::memory_order_acquire) == 2) break; } if (state.load(std::memory_order_acquire) == 2) break; } } + // final rdtsc after detecting finish + const u64 final_now = __rdtsc(); + if (final_now >= last) + acc += (final_now - last); + // global lift // we now take the total accumulated debt and spread it evenly across // ALL samples collected @@ -5649,27 +5647,22 @@ struct VM { // if it was just noise/interrupts: // 20,000 cycles / 25,000 samples = +0.8 cycles per sample // - // if it was hypervisor debt (must be paid totally, otherwise they would fail the global/local ratio check): + // if it was hypervisor debt (must be paid almost totally, otherwise they would fail the global/local ratio check): // 40,000,000 cycles / 25,000 samples = +1600 cycles per sample, always mathematically crossing the threshold no matter when they pay the time debt // // this preserves the robust filtering of calculate_latency (it still handles small jitter), // but effectively raises the sea level of all samples based on the debt to mathematically always catch the hidden vmexit latency const size_t captured_count = (idx < samples.size()) ? idx : samples.size(); - + if (captured_count > 0 && total_spike_debt > 0) { // we divide debt by the number of samples that actually contributed to the measurement period - u64 lift = total_spike_debt / captured_count; + const u64 lift = total_spike_debt / captured_count; for (size_t i = 0; i < captured_count; ++i) { samples[i] += lift; } } - // final rdtsc after detecting finish - const u64 final_now = __rdtsc(); - if (final_now >= last) - acc += (final_now - last); - t2_end.store(acc, std::memory_order_release); }); @@ -5694,12 +5687,10 @@ struct VM { std::vector used; for (u64 s : samples) if (s != 0) used.push_back(s); const u64 cpuid_latency = calculate_latency(used); - const double cycles_per_iter = static_cast(t1_delta) / static_cast(ITER_XOR); debug("TIMER: T1 delta: ", t1_delta); debug("TIMER: T2 delta: ", t2_delta); debug("TIMER: VMEXIT latency: ", cpuid_latency); - debug("TIMER: IPC: ", cycles_per_iter); if (cpuid_latency >= cycle_threshold) { debug("TIMER: Detected a VMEXIT on CPUID"); @@ -5727,22 +5718,10 @@ struct VM { // Thread 1 ran this dependency chain, x ^= i; x = (x << 1) ^ (x >> 3) // because each instruction depends on the result of the previous one, the CPU cannot execute these in parallel // on bare metal, a dependent ALU operation takes a minimum number of core cycles, for this is typically 2-4 per iteration - // Even with an extreme 6.0GHz Turbo on a 2.0GHz Base Clock (3x ratio), this results in at least 0.7 to 1.0 TSC cycles per iteration - - // If a hypervisor is "shaving" cycles globally to hide the latency of Thread 2's CPUID spam, - // it subtracts time from the global counter. This causes Thread 1 (which caused no exits) - // to appear to have finished its work instantly or impossibly fast. - // If thread 1 reports finishing 100000000 dependent iterations in only 10000000 TSC cycles (so 0.1 cycles/iter), the CPU effectively ran at 10 instructions per cycle on a dependent chain - // which is basically impossible on x86 silicon and confirms the TSC was manipulated - - // 0.25 is an extremely conservative threshold but there's no need to raise it - // because mathematically talking, considering the number of times cpuid is called in thread 2, they will pass this limit even with a patch that downscales only 100 cycles per cpuid call - // a value this low implies the code ran 4x faster than the theoretical limit of the silicon, - // or roughly 12x faster than the actual core clock speed - - // This is immune to turbo/throttling noise because those variances (10-30%) are negligible - // compared to the massive reduction (like 90%+) caused by exit hiding - if (cycles_per_iter < 0.25) { + const double cycles_per_iter = static_cast(t1_delta) / static_cast(ITER_XOR); + debug("TIMER: Cycles per XOR iteration (less is faster): ", cycles_per_iter); + + if (cycles_per_iter <= 2 || cycles_per_iter >= 8.0) { debug("TIMER: Detected a hypervisor dowscaling TSC globally (IPC was impossible): ", cycles_per_iter); return true; }