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DITEKSHEN_MALWARE_Win_Apostle

Detects Apsotle

MalwareApostleditekSHen 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 Apsotle

Associated malware family: Apostle.

Targets: Windows PE.

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

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-apostle.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Apostle : FILE
{
	meta:
		description = "Detects Apsotle"
		author = "ditekSHen"
		id = "6e6d2ef0-b709-5915-b644-db86d9d3f26a"
		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#L6281-L6295"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "aa5a522383cbb7e2fdb90f4c4395c7f92f546aa1dbda8f44090225861f011630"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "bytesToBeEncrypted" fullword ascii
		$s2 = "SelfDelete" fullword ascii
		$s3 = "ReadMeFileName" ascii
		$s4 = "DesktopFileName" ascii
		$s5 = "SetWallpaper" fullword ascii
		$s6 = "get_EncryptionKey" fullword ascii
		$s7 = "disall" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and 6 of them
}

Strings (7 patterns)

IdentifierTypeValueModifiers
$s1text"bytesToBeEncrypted"fullword ascii
$s2text"SelfDelete"fullword ascii
$s3text"ReadMeFileName"ascii
$s4text"DesktopFileName"ascii
$s5text"SetWallpaper"fullword ascii
$s6text"get_EncryptionKey"fullword ascii
$s7text"disall"fullword ascii

Condition

uint16( 0 ) == 0x5a4d and 6 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 6 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: 6e6d2ef0-b709-5915-b644-db86d9d3f26a

Tags:FILE

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