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DITEKSHEN_MALWARE_Win_Blackhunt

Detects BlackHunt ransomware

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

What this rule detects

Detects BlackHunt ransomware

Associated malware family: Blackhunt.

Targets: Windows PE.

It defines 8 patterns (6 text, 0 hex, 2 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-blackhunt.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Blackhunt : FILE
{
	meta:
		description = "Detects BlackHunt ransomware"
		author = "ditekSHen"
		id = "4bdb26dd-a424-54a6-b313-e98bdf18cfce"
		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#L11441-L11456"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "62e9bc505eff3e19ff0cdaf180e45e6d7917f0bec7cd9b007bee9fe1d9d09b66"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = /#BlackHunt_(Logs|BG|Icon|Public|Private|ID|ReadMe|Update)\.(txt|jpg|ico|key|hta)/ ascii wide
		$s2 = /-(biggame|noencrypt|netinfo|nospread)/ fullword wide
		$s3 = "/v \"*BlackHunt\" /t REG_SZ /d" wide
		$s4 = "/sc onstart /TN \"Windows Critical Update\" /TR \"'%s' %s\" /F" wide
		$s5 = "/v \"DisableChangePassword\" /t REG_DWORD /d" wide
		$s6 = "<span> %s </span>this ID (<span> %s </span>)" wide
		$s7 = "}div.header h1 span#hunter" wide
		$s8 = "BLACK_HUNT_MUTEX" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and 4 of them
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$s1regex/#BlackHunt_(Logs|BG|Icon|Public|Private|ID|ReadMe|Update)\.(txt|jpg|ico|key|hta)/ascii wide
$s2regex/-(biggame|noencrypt|netinfo|nospread)/fullword wide
$s3text"/v \"*BlackHunt\" /t REG_SZ /d"wide
$s4text"/sc onstart /TN \"Windows Critical Update\" /TR \"'%s' %s\" /F"wide
$s5text"/v \"DisableChangePassword\" /t REG_DWORD /d"wide
$s6text"<span> %s </span>this ID (<span> %s </span>)"wide
$s7text"}div.header h1 span#hunter"wide
$s8text"BLACK_HUNT_MUTEX"fullword ascii

Condition

uint16( 0 ) == 0x5a4d and 4 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 4 patterns in the rule must match.

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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: 4bdb26dd-a424-54a6-b313-e98bdf18cfce

Tags:FILE

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