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YARA · Avast / Gen Digital IOC

AVASTTI_Cobaltstrike_Raw_Payload_Https_Stager_X86_Utf16

No description has been set in the source file - AvastTI

Herramienta ofensivaCobalt StrikeAvast / Gen Digital IOCDetection Rule License 1.1Compila con YARA-X
Autor
Gen Threat Labs
Fecha
2021-07-08
Modificada
2026-03-11
Puntuación / Calidad
75 / 90

Qué detecta esta regla

No description has been set in the source file - AvastTI

Familia de malware asociada: Cobalt Strike.

Define 1 patrones (0 de texto, 1 hex, 0 regex).

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

Código de la regla

Descargar .yar
cobaltstrike-raw-payload-https-stager-x86-utf16.yarDetection Rule License 1.1
rule AVASTTI_Cobaltstrike_Raw_Payload_Https_Stager_X86_Utf16
{
	meta:
		description = "No description has been set in the source file - AvastTI"
		author = "Gen Threat Labs"
		id = "dcd3e5c8-7626-5a78-9f90-7a8e67311d90"
		date = "2021-07-08"
		modified = "2026-03-11"
		reference = "https://github.com/gendigitalinc/ioc"
		source_url = "https://github.com/avast/ioc/blob/a450ddabed95984422909c75ac52b6841f685983/CobaltStrike/yara_rules/cs_rules.yar#L499-L520"
		license_url = "N/A"
		logic_hash = "5003ebd545182bb105cdcaaac2105a92cdd99a0178c24eb5ae2888232897aeb5"
		score = 75
		quality = 90
		tags = ""

	strings:
		$h01 = { FC 00 E8 00 89 00 00 00 00 00 00 00 60 00 89 00 E5 00 31 00 D2 00 64 00 8B 00 52 00 30 00 8B 00 52 00 0C 00 8B 00 52 00 14 00 8B 00 72 00 28 }

	condition:
		uint32( @h01 + 0x013b ) == 0x07002600 and uint32( @h01 + 0x0161 ) == 0xa7007900 and uint32( @h01 + 0x0199 ) == 0xc6009f00 and uint32( @h01 + 0x01d1 ) == 0x3b002e00 and uint32( @h01 + 0x0203 ) == 0x86009e00 and uint32( @h01 + 0x0223 ) == 0x7b001800 and uint32( @h01 + 0x0255 ) == 0x5d00e200 and uint32( @h01 + 0x0267 ) == 0x31005e00 and uint32( @h01 + 0x0285 ) == 0x0b00e000 and uint32( @h01 + 0x05d5 ) == 0x5600a200 and uint32( @h01 + 0x05fd ) == 0xe5005300 and uint32( @h01 + 0x0633 ) == 0xe2008900
}

Cadenas (1 patrones)

IdentificadorTipoValorModificadores
$h01hex{ FC 00 E8 00 89 00 00 00 00 00 00 00 60 00 89 00 E5 00 31 00 D2 00 64 00 8B 00 52 00 30 00 8B 00 52 00 0C 00 8B 00 52 00 14 00 8B 00 72 00 28 }

Condición

uint32( @h01 + 0x013b ) == 0x07002600 and uint32( @h01 + 0x0161 ) == 0xa7007900 and uint32( @h01 + 0x0199 ) == 0xc6009f00 and uint32( @h01 + 0x01d1 ) == 0x3b002e00 and uint32( @h01 + 0x0203 ) == 0x86009e00 and uint32( @h01 + 0x0223 ) == 0x7b001800 and uint32( @h01 + 0x0255 ) == 0x5d00e200 and uint32( @h01 + 0x0267 ) == 0x31005e00 and uint32( @h01 + 0x0285 ) == 0x0b00e000 and uint32( @h01 + 0x05d5 ) == 0x5600a200 and uint32( @h01 + 0x05fd ) == 0xe5005300 and uint32( @h01 + 0x0633 ) == 0xe2008900

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Referencias

Licencia y atribución

Autor: Gen Threat Labs

Repositorio de origen: Avast / Gen Digital IOC @ a450ddabed

Licencia: Detection Rule License 1.1 (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: dcd3e5c8-7626-5a78-9f90-7a8e67311d90

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