Search Evasion Techniques
Names, Techniques, Definitions, Keywords
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SIDT, Red Pill Sandbox Evasion
Red Pill is a technique used by malware to determine whether it is running on a physical machine or a virtual machine. The Red Pill technique involves executing the SIDT instruction, which retrieves the value of the Interrupt Descriptor Table Register (IDTR) and stores it in a memory location.
On a physical machine, the IDTR will contain the address …
SLDT, No Pill Sandbox Evasion
The No Pill technique is a method used by malware to determine whether it is running on a physical machine or a virtual machine. This technique relies on the fact that the Local Descriptor Table (LDT) is assigned to a processor, rather than to an operating system. On a physical machine, the location of the LDT will be zero, whereas …
IN Sandbox Evasion
The IN instruction is a type of machine code instruction that is used to read data from an input port. This instruction can only be executed in privileged mode, such as in kernel mode, and an attempt to execute it in user mode will generate an exception.
However, some virtual machine monitors, such as VMWare, use a special port …
Obfuscated Files or Information: Software Packing Defense Evasion [Mitre]
Adversaries may perform software packing or virtual machine software protection to conceal their code. Software packing is a method of compressing or encrypting an executable. Packing an executable changes the file signature in an attempt to avoid signature-based detection. Most decompression techniques decompress the executable code in memory. Virtual machine software protection translates an executable's original code into a special …
Virtualization/Sandbox Evasion: System Checks Defense Evasion [Mitre]
Adversaries may employ various system checks to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core functions …
Virtualization/Sandbox Evasion: User Activity Based Checks Defense Evasion [Mitre]
Adversaries may employ various user activity checks to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core …
Virtualization/Sandbox Evasion: Time Based Evasion Defense Evasion [Mitre]
Adversaries may employ various time-based methods to detect and avoid virtualization and analysis environments. This may include enumerating time-based properties, such as uptime or the system clock, as well as the use of timers or other triggers to avoid a virtual machine environment (VME) or sandbox, specifically those that are automated or only operate for a limited amount of time.
…Querying the I/O Communication Port Sandbox Evasion
VMware uses virtual I/O ports for communication between the virtual machine and the host operating system to support functionality like copy and paste between the two systems. The port can be queried and compared with a magic number VMXh to identify the use of VMware.
Detecting Virtual Environment Files Sandbox Evasion
Some files are created by Virtualbox and VMware on the system.
Malware can check the different folders to find Virtualbox artifacts like VBoxMouse.sys.
Malware can check the different folders to find VMware artifacts like vmmouse.sys, vmhgfs.sys.
Some Files Example
Below is a list of files that can be detected on virtual machines:
- "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\agent.pyw", …
Detecting Virtual Environment Artefacts Sandbox Evasion
Qemu registers some artifacts into the registry. A malware can detect the Qemu installation with a look at the registry key HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0 with the value of Identifier and the data of QEMU or HARDWARE\\Description\\System with a value of SystemBiosVersion and data of QEMU.
The VirtualBox Guest addition leaves many …