YARA · Mandiant red team tool countermeasures

FIREEYE_RT_APT_Loader_Win64_PGF_5

PGF payload, generated rule based on symfunc/8167a6d94baca72bac554299d7c7f83c

APT / actorMandiant red team tool countermeasuresBSD 2-Clause LicenseCompila con YARA-X

Autor: FireEye
Fecha: 2020-12-08
Modificada: 2020-12-09
Puntuación / Calidad: 75 / 75

Qué detecta esta regla

PGF payload, generated rule based on symfunc/8167a6d94baca72bac554299d7c7f83c

Objetivos: PE de Windows.

Define 4 patrones (0 de texto, 4 hex, 0 regex).

Resumen generado a partir de los metadatos y la condición de la regla.

Código de la regla

Descargar .yar

apt-loader-win64-pgf-5.yarBSD 2-Clause License

rule FIREEYE_RT_APT_Loader_Win64_PGF_5 : FILE
{
	meta:
		description = "PGF payload, generated rule based on symfunc/8167a6d94baca72bac554299d7c7f83c"
		author = "FireEye"
		id = "4fa4a1d6-cb63-582d-801c-b4c89c44d9ca"
		date = "2020-12-08"
		modified = "2020-12-09"
		reference = "https://github.com/mandiant/red_team_tool_countermeasures/"
		source_url = "https://github.com/mandiant/red_team_tool_countermeasures//blob/3561b71724dbfa3e2bb78106aaa2d7f8b892c43b/rules/PGF/production/yara/APT_Loader_Win64_PGF_5.yar#L4-L18"
		license_url = "https://github.com/mandiant/red_team_tool_countermeasures//blob/3561b71724dbfa3e2bb78106aaa2d7f8b892c43b/LICENSE.txt"
		hash = "150224a0ccabce79f963795bf29ec75b"
		logic_hash = "16495ad1e5ce4d4a79f4067f3d687911a1a0a3bfe4c6409ff9de4d111b1ddca6"
		score = 75
		quality = 75
		tags = "FILE"
		rev = 3

	strings:
		$cond1 = { 4C 89 44 24 18 89 54 24 10 48 89 4C 24 08 48 83 EC 38 48 8B 4C 24 40 FF 15 13 FA FF FF 8B 44 24 48 89 44 24 20 83 7C 24 20 01 74 02 EB 17 48 8B 44 24 40 48 89 05 66 23 00 00 48 8B 4C 24 40 FF 15 EB F9 FF FF B8 01 00 00 00 48 83 C4 38 C3 }
		$cond2 = { 4C 89 44 24 18 89 54 24 10 48 89 4C 24 08 48 83 EC 38 48 8B 4C 24 40 FF 15 A3 FA FF FF 8B 44 24 48 89 44 24 20 83 7C 24 20 01 74 02 EB 17 48 8B 44 24 40 48 89 05 F6 20 00 00 48 8B 4C 24 40 FF 15 7B FA FF FF B8 01 00 00 00 48 83 C4 38 C3 }
		$cond3 = { 4C 89 44 24 18 89 54 24 10 48 89 4C 24 08 48 83 EC 38 48 8B 4C 24 40 FF ?? ?? ?? ?? ?? 8B 44 24 48 89 44 24 20 83 7C 24 2? ?1 74 ?? EB ?? 48 8B 44 24 40 48 ?? ?? ?? ?? ?? ?? 48 8B 4C 24 40 FF ?? ?? ?? ?? ?? B8 01 ?? ?? ?? 48 83 C4 38 C3 }
		$cond4 = { 4C 89 44 24 ?? 89 54 24 ?? 48 89 4C 24 ?? 48 83 EC 38 48 8B 4C 24 ?? FF 15 ?? ?? ?? ?? 8B 44 24 ?? 89 44 24 ?? 83 7C 24 ?? 01 74 ?? EB ?? 48 8B 44 24 ?? 48 89 05 ?? ?? ?? ?? 48 8B 4C 24 ?? FF 15 ?? ?? ?? ?? B8 01 00 00 00 48 83 C4 38 C3 }

	condition:
		( uint16( 0 ) == 0x5A4D ) and ( uint32( uint32( 0x3C ) ) == 0x00004550 ) and ( uint16( uint32( 0x3C ) + 0x18 ) == 0x020B ) and any of them
}

Cadenas (4 patrones)

Identificador	Tipo	Valor
$cond1	hex	{ 4C 89 44 24 18 89 54 24 10 48 89 4C 24 08 48 83 EC 38 48 8B 4C 24 40 FF 15 13 FA FF FF 8B 44 24 48 89 44 24 20 83 7C 24 20 01 74 02 EB 17 48 8B 44 24 40 48 89 …
$cond2	hex	{ 4C 89 44 24 18 89 54 24 10 48 89 4C 24 08 48 83 EC 38 48 8B 4C 24 40 FF 15 A3 FA FF FF 8B 44 24 48 89 44 24 20 83 7C 24 20 01 74 02 EB 17 48 8B 44 24 40 48 89 …
$cond3	hex	{ 4C 89 44 24 18 89 54 24 10 48 89 4C 24 08 48 83 EC 38 48 8B 4C 24 40 FF ?? ?? ?? ?? ?? 8B 44 24 48 89 44 24 20 83 7C 24 2? ?1 74 ?? EB ?? 48 8B 44 24 40 48 ?? …
$cond4	hex	{ 4C 89 44 24 ?? 89 54 24 ?? 48 89 4C 24 ?? 48 83 EC 38 48 8B 4C 24 ?? FF 15 ?? ?? ?? ?? 8B 44 24 ?? 89 44 24 ?? 83 7C 24 ?? 01 74 ?? EB ?? 48 8B 44 24 ?? 48 89 …

Condición

( uint16( 0 ) == 0x5A4D ) and ( uint32( uint32( 0x3C ) ) == 0x00004550 ) and ( uint16( uint32( 0x3C ) + 0x18 ) == 0x020B ) and any of them

En palabras sencillas (Heurística)

El archivo debe empezar por «MZ»: un ejecutable de Windows (PE).
Debe coincidir al menos un patrón de la regla.

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Referencias

https://github.com/mandiant/red_team_tool_countermeasures/

Hashes de muestras

Hashes de las muestras que el autor lista en los metadatos de la regla (búscalos en tu plataforma de threat intelligence).

150224a0ccabce79f963795bf29ec75b

Licencia y atribución

Autor: FireEye

Repositorio de origen: Mandiant red team tool countermeasures @ 3561b71724

Licencia: BSD 2-Clause License (licencia del repositorio)

Regla original

Obtenida a través de YARA Forge 20260927, que añade a los nombres el prefijo de la fuente y campos meta normalizados.

Id de la regla: 4fa4a1d6-cb63-582d-801c-b4c89c44d9ca

Metadatos

rev	3

Etiquetas:FILE

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