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DITEKSHEN_MALWARE_Win_Limerat

LimeRAT payload

MalwareLimeratditekSHen 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

LimeRAT payload

Associated malware family: Limerat.

Targets: Windows PE.

It defines 9 patterns (9 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-limerat.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Limerat : FILE
{
	meta:
		description = "LimeRAT payload"
		author = "ditekSHen"
		id = "a4b85cad-97a8-514c-9380-f3e8ec95a44d"
		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#L152-L168"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "8ae35c5fa48773b93da0b76b238fc8dbaf19fdeb6fd81bf23842c5121d620116"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr" wide
		$s2 = "\\vboxhook.dll" fullword wide
		$s3 = "Win32_Processor.deviceid=\"CPU0\"" fullword wide
		$s4 = "select CommandLine from Win32_Process where Name='{0}'" wide
		$s5 = "Minning..." fullword wide
		$s6 = "Regasm.exe" fullword wide
		$s7 = "Flood!" fullword wide
		$s8 = "Rans-Status" fullword wide
		$s9 = "cmd.exe /c ping 0" wide

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

Strings (9 patterns)

IdentifierTypeValueModifiers
$s1text"schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr"wide
$s2text"\\vboxhook.dll"fullword wide
$s3text"Win32_Processor.deviceid=\"CPU0\""fullword wide
$s4text"select CommandLine from Win32_Process where Name='{0}'"wide
$s5text"Minning..."fullword wide
$s6text"Regasm.exe"fullword wide
$s7text"Flood!"fullword wide
$s8text"Rans-Status"fullword wide
$s9text"cmd.exe /c ping 0"wide

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: a4b85cad-97a8-514c-9380-f3e8ec95a44d

Tags:FILE

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