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DITEKSHEN_MALWARE_Win_Maktub

Detects Maktub ransomware

MalwareMaktubditekSHen 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 Maktub ransomware

Associated malware family: Maktub.

Targets: Windows PE.

It defines 7 patterns (6 text, 0 hex, 1 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-maktub.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Maktub : FILE
{
	meta:
		description = "Detects Maktub ransomware"
		author = "ditekSHen"
		id = "be47d858-8497-593f-865b-c3d3a5db6c2e"
		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#L4891-L4905"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "5c11d04fc3088eb8a0132b9ed83748ddb7e1bbe9d03b9e884d4003181cbb6d69"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "Content-Disposition: attachment; filename=" ascii
		$s2 = "Mozilla/5.0 (Windows NT 6.1; rv:45.0) Gecko/20100101 Firefox/45.0" fullword ascii
		$s3 = "/tor/status-vote/current/consensus" ascii
		$s4 = "/tor/server/fp/" ascii
		$s5 = "/tor/rendezvous2/" ascii
		$s6 = "404 Not found" fullword ascii
		$s7 = /_request@\d+/ fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and 5 of them
}

Strings (7 patterns)

IdentifierTypeValueModifiers
$s1text"Content-Disposition: attachment; filename="ascii
$s2text"Mozilla/5.0 (Windows NT 6.1; rv:45.0) Gecko/20100101 Firefox/45.0"fullword ascii
$s3text"/tor/status-vote/current/consensus"ascii
$s4text"/tor/server/fp/"ascii
$s5text"/tor/rendezvous2/"ascii
$s6text"404 Not found"fullword ascii
$s7regex/_request@\d+/fullword ascii

Condition

uint16( 0 ) == 0x5a4d and 5 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 5 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: be47d858-8497-593f-865b-c3d3a5db6c2e

Tags:FILE

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