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YARA · ditekSHen detection

DITEKSHEN_MALWARE_Win_Motocos

Detects Motocos ransomware

MalwareMotocosditekSHen 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 Motocos ransomware

Associated malware family: Motocos.

Targets: Windows PE.

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

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-motocos.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Motocos : FILE
{
	meta:
		description = "Detects Motocos ransomware"
		author = "ditekSHen"
		id = "be7284be-b57d-5a2c-9a84-37d76445cd0d"
		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#L5966-L5981"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "99ac365c277058503874313e3a74ab016d6d279b47c754c3df950e3ce60e29f1"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "Block Investigation Tools" wide
		$s2 = "powershell.exe,taskmgr.exe,procexp.exe,procmon.exe" wide
		$s3 = "google.com,youtube.com,baidu.com,facebook.com,amazon.com,360.cn,yahoo.com,wikipedia.org,zoom.us,live.com,reddit.com,netflix.com,microsoft.com,instagram.com,vk.com," wide
		$s4 = "START ----" wide
		$s5 = "TEngine.Clear_EventLog_Result" wide
		$s6 = "TEngine.EncryptLockFiles" wide
		$s7 = "TEngine.CleanShadowFiles" wide
		$s8 = "TDNSUtils.SendCommand" wide

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

Strings (8 patterns)

IdentifierTypeValueModifiers
$s1text"Block Investigation Tools"wide
$s2text"powershell.exe,taskmgr.exe,procexp.exe,procmon.exe"wide
$s3text"google.com,youtube.com,baidu.com,facebook.com,amazon.com,360.cn,yahoo.com,wikipedia.org,zoom.us,live.com,reddit.com,netflix.com,microsoft.com,instagram.com,vk. …wide
$s4text"START ----"wide
$s5text"TEngine.Clear_EventLog_Result"wide
$s6text"TEngine.EncryptLockFiles"wide
$s7text"TEngine.CleanShadowFiles"wide
$s8text"TDNSUtils.SendCommand"wide

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: be7284be-b57d-5a2c-9a84-37d76445cd0d

Tags:FILE

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