Skip to content
yararules.org
Menu

YARA · ditekSHen detection

DITEKSHEN_MALWARE_Win_Qakbot

Detects variants of QakBot payload

MalwareQakbotditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekSHen
Date
2020-11-06
Modified
2024-11-01
Score / Quality
75 / 73

What this rule detects

Detects variants of QakBot payload

Associated malware family: Qakbot.

Targets: Windows PE.

It defines 5 patterns (5 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-qakbot.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Qakbot : FILE
{
	meta:
		description = "Detects variants of QakBot payload"
		author = "ditekSHen"
		id = "3a3b3b6c-0969-584e-a184-7acfca3cdd42"
		date = "2020-11-06"
		modified = "2024-11-01"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L3445-L3457"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "b64c05eb7ac03b2b4709f9979d117e4cacc617f21d0b3bf1c1be42aa18cc44cc"
		score = 75
		quality = 73
		tags = "FILE"

	strings:
		$s1 = "stager_1.dll" fullword ascii
		$s2 = "_vsnwprintf" fullword ascii
		$s3 = "DllRegisterServer" fullword ascii
		$s4 = "Win32_PnPEntity" fullword wide
		$s5 = "0>user32.dll" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and all of them
}

Strings (5 patterns)

IdentifierTypeValueModifiers
$s1text"stager_1.dll"fullword ascii
$s2text"_vsnwprintf"fullword ascii
$s3text"DllRegisterServer"fullword ascii
$s4text"Win32_PnPEntity"fullword wide
$s5text"0>user32.dll"fullword ascii

Condition

uint16( 0 ) == 0x5a4d and all of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • All patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

References

Licence & attribution

Author: ditekSHen

Source repository: ditekSHen detection @ e76c93dcde

Licence: BSD 2-Clause License (repository licence)

Copyright notice: Copyright 2021 by ditekSHen (https://github.com/ditekshen/detection).

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 3a3b3b6c-0969-584e-a184-7acfca3cdd42

Tags:FILE

Related rules

More Qakbot rules