Search Evasion Techniques
Names, Techniques, Definitions, Keywords
Search Result
147 item(s) found so far for this keyword.
Thermal Zone Temperature Sandbox Evasion
The temperature sensor is used to know the current temperature of a machine. In a non-virtualized environment, the function returns valid support and output like: "25.05 C: 77.09 F: 298.2K". But for a fully virtualized environment, the return is "MSAcpi_ThermalZoneTemperature not supported" because this feature is not supported on virtualized processors.
Interestingly, this method is not valid. Not all Windows …
Volume Shadow Copy Service (VSC,VSS) Deletion Anti-Forensic Defense Evasion [Mitre]
Deleting Volume Shadow Copy makes the forensic investigation more difficult in terms of the recovery of previous artifact evidence. In addition, attackers using ransomware often delete VSCs not to be able to recover the original files of the encrypted files from VSCs.
On the other hand, deleting by using vssadmin and WMIC is on a file system level, the actual …
Alternate EXE Packer Packers
EXE Packer is able to compress executable files (type EXE) or DLL-files. Already compressed files may also be decompressed with this program. There exist 12 different levels for file-compression. This program is also able to create backups of the files that shall be compressed.
If a file is compressed the physical file-size is reduced on the respective device. A compressed …
FLIRT Signatures Evasion Anti-Disassembly
FLIRT Signature evasion is a technique used by malware to hide malicious code inside legitimate functions from known libraries. FLIRT (Fast Library Identification and Recognition Technology) is a database that contains signature patterns for identifying known functions from legitimate libraries.
Malware authors can abuse these signatures by modifying or adding specific bytes to the code, so that it appears to …
Impair Defenses: Disable Windows Event Logging Defense Evasion [Mitre]
Adversaries may disable Windows event logging to limit data that can be leveraged for detections and audits. Windows event logs record user and system activity such as login attempts, process creation, and much more. This data is used by security tools and analysts to generate detections.
The EventLog service maintains event logs from various system components and applications. By default, …
ScrubCrypt Packers
ScrubCrypt is a malware obfuscation and encryption framework, derived from the earlier JLaive Batchfuscator crypter. It is designed to aid cybercriminals in evading detection and analysis by using a variety of techniques to conceal and protect the malicious software.
ScrubCrypt is advertised on cybercrime forums to employ encryption, code morphing, and (allegedly) polymorphism to create obfuscated malware payloads that are …
Evasion using direct Syscalls Antivirus/EDR Evasion
In the Windows operating system, conventional malware frequently utilizes strategies involving the invocation of specific functions from the kernel32.dll library, such as VirtualAlloc
, VirtualProtect
, and CreateThread
. A closer inspection of the call stack reveals that the functions employed from kernel32.dll eventually trigger corresponding functions within the ntdll.dll library. This is facilitated by the ntdll.dll library, which serves …