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DITEKSHEN_MALWARE_Win_Arrowrat

Detects ArrowRAT

MalwareArrowratditekSHen 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 ArrowRAT

Associated malware family: Arrowrat.

Targets: Windows PE.

It defines 11 patterns (10 text, 0 hex, 1 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-arrowrat.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Arrowrat : FILE
{
	meta:
		description = "Detects ArrowRAT"
		author = "ditekSHen"
		id = "14d3aabe-1ef5-599f-adbd-61b580099447"
		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#L9943-L9961"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "13e6d4fd274f75c50aa4110276812d02885c03cfc269dde480db66955e5f703a"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "29mdHdhcmVcTWljcm9zb2Z0XFdpbmRvd3MgTlRcQ3VycmVudFZlcnNpb25cV2lubG9nb" wide
		$s2 = "Software\\Classes\\ms-settings\\shell\\open\\command" wide
		$s3 = "DelegateExecute" fullword wide
		$s4 = "powershell" wide
		$s5 = "DESKTOP_HOOKCONTROL" fullword ascii
		$s6 = "PROCESS_INFORMATION" fullword ascii
		$s7 = "STARTUP_INFORMATION" fullword ascii
		$s8 = /(Venom|Pandora)\shVNC/ fullword wide
		$s9 = "cmd.exe /k START" fullword wide
		$s10 = "ExclusionWD" fullword ascii
		$s11 = "WinExec" fullword ascii

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

Strings (11 patterns)

IdentifierTypeValueModifiers
$s1text"29mdHdhcmVcTWljcm9zb2Z0XFdpbmRvd3MgTlRcQ3VycmVudFZlcnNpb25cV2lubG9nb"wide
$s2text"Software\\Classes\\ms-settings\\shell\\open\\command"wide
$s3text"DelegateExecute"fullword wide
$s4text"powershell"wide
$s5text"DESKTOP_HOOKCONTROL"fullword ascii
$s6text"PROCESS_INFORMATION"fullword ascii
$s7text"STARTUP_INFORMATION"fullword ascii
$s8regex/(Venom|Pandora)\shVNC/fullword wide
$s9text"cmd.exe /k START"fullword wide
$s10text"ExclusionWD"fullword ascii
$s11text"WinExec"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: 14d3aabe-1ef5-599f-adbd-61b580099447

Tags:FILE

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