Detecting Virtual Environment Process Sandbox Evasion

Process related to Virtualbox can be detected by malware by query the process list.

The VMware Tools use processes like VMwareServices.exe or VMwareTray.exe, to perform actions on the virtual environment. A malware can list the process and searches for the VMware string. Process: VMwareService.exe, VMwareTray.exe, TPAutoConnSvc.exe, VMtoolsd.exe, VMwareuser.exe.

NtQueryInformationProcess Anti-Debugging

This function retrieves information about a running process. Malware are able to detect if the process is currently being attached to a debugger using the ProcessDebugPort (0x7) information class.

A nonzero value returned by the call indicates that the process is being debugged.

CsrGetProcessID Anti-Debugging

This function is undocumented within OpenProcess. It can be used to get the PID of CRSS.exe, which is a SYSTEM process. By default, a process has the SeDebugPrivilege privilege in their access token disabled.

However, when the process is loaded by a debugger such as OllyDbg or WinDbg, the SeDebugPrivilege privilege is enabled. If a process is able …

Detecting Running Process: EnumProcess API Sandbox Evasion Anti-Debugging Anti-Monitoring

Anti-monitoring is a technique used by malware to prevent security professionals from detecting and analyzing it. One way that malware can accomplish this is by using the EnumProcess function to search for specific processes, such as ollydbg.exe or wireshark.exe, which are commonly used by security professionals to monitor and analyze running processes on a system.

By detecting these processes …

Process Hollowing, RunPE Process Manipulating

Process hollowing is a technique used by malware to evade detection by injecting malicious code into a legitimate process. This technique involves creating a new instance of a legitimate process and replacing its original code with the malicious payload.

The process is the following:

CreateProcess: in a suspended mode with the CreationFlag at 0x0000 0004.
…

Process Camouflage, Masquerading Process Manipulating

Masquerading is a technique used by malware to evade detection by disguising itself as a legitimate file. This is typically achieved by renaming the malicious file to match the name of a commonly found and trusted file, such as svchost.exe, and placing it in a legitimate folder.

Masquerading can occur when the name or location of an executable, …

Parent Process Detection Anti-Monitoring

Parent process is a technique used by malware to evade detection by security analysts. The parent process of a given process is the process that spawned it.

For example, most user processes on a Windows system have explorer.exe as their parent process. By checking the parent process of a given process, malware can determine whether it is being monitored …

Process Doppelgänging Process Manipulating

This technique leverages the Transactional NTFS functionality in Windows. This functionality helps maintain data integrity during an unexpected error. For example, when an application needs to write or modify a file, if an error is triggered mid-write, the data can be corrupted. To avoid this kind of behavior, an application can open the file in a transactional mode to perform …

Kill Process Anti-Monitoring

Malware often employs techniques to evade detection and hinder the efforts of security experts in analyzing its behavior. One notable method involves terminating processes associated with anti-virus software or monitoring tools.

For example, malware may specifically target processes like wireshark.exe, ida.exe, or procmon.exe, which are frequently used by analysts to observe and scrutinize running processes on a system. By …

Process Reimaging Process Manipulating

Process Reimaging is a technique used to evade detection by endpoint security solutions. It is a variation of the Process Hollowing or Process Doppelganging techniques, which are used to execute arbitrary code in the context of another process.

The Windows operating system has inconsistencies in how it determines the locations of process image FILE_OBJECTs, which can impact the ability …

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