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DITEKSHEN_MALWARE_Win_Meterpreter

Detects Meterpreter payload

MalwareMeterpreterditekSHen 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 Meterpreter payload

Associated malware family: Meterpreter.

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-meterpreter.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Meterpreter : FILE
{
	meta:
		description = "Detects Meterpreter payload"
		author = "ditekSHen"
		id = "d72fef80-d624-5e39-963a-8d7c12eb2d9c"
		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#L3330-L3343"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "5226cd7bb2344b822ee94d75f81a523ff701778de97a32ae52c604a4855e960c"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "PACKET TRANSMIT" fullword ascii
		$s2 = "PACKET RECEIVE" fullword ascii
		$s3 = "\\\\%s\\pipe\\%s" fullword ascii wide
		$s4 = "%04x-%04x:%s" fullword wide
		$s5 = "server.dll" fullword ascii

	condition:
		( uint16( 0 ) == 0x5a4d and all of them ) or ( filesize < 300KB and all of them )
}

Strings (5 patterns)

IdentifierTypeValueModifiers
$s1text"PACKET TRANSMIT"fullword ascii
$s2text"PACKET RECEIVE"fullword ascii
$s3text"\\\\%s\\pipe\\%s"fullword ascii wide
$s4text"%04x-%04x:%s"fullword wide
$s5text"server.dll"fullword ascii

Condition

( uint16( 0 ) == 0x5a4d and all of them ) or ( filesize < 300KB and all of them )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • The file must be smaller than 300KB (a cheap guard that skips large files).
  • All 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: d72fef80-d624-5e39-963a-8d7c12eb2d9c

Tags:FILE

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