YARA · Google Cloud Threat Intelligence (GCTI)
GCTI_Cobaltstrike_Resources_Bypassuac_X64_Dll_V3_3_To_V3_14_And_Sleeve_Bypassuac_X64_Dll_V4_0_And_V4_X
Cobalt Strike's resources/bypassuac-x64.dll from v3.3 to v3.14 (64-bit version) and sleeve/bypassuac.x64.dll from v4.0 to at least v4.4
- Autor
- gssincla@google.com
- Fecha
- 2022-11-18
- Modificada
- 2022-11-19
- Puntuación / Calidad
- 75 / 85
Qué detecta esta regla
Cobalt Strike's resources/bypassuac-x64.dll from v3.3 to v3.14 (64-bit version) and sleeve/bypassuac.x64.dll from v4.0 to at least v4.4
Familia de malware asociada: Cobalt Strike.
Define 2 patrones (0 de texto, 2 hex, 0 regex).
Resumen generado a partir de los metadatos y la condición de la regla.
Código de la regla
rule GCTI_Cobaltstrike_Resources_Bypassuac_X64_Dll_V3_3_To_V3_14_And_Sleeve_Bypassuac_X64_Dll_V4_0_And_V4_X
{
meta:
= "Cobalt Strike's resources/bypassuac-x64.dll from v3.3 to v3.14 (64-bit version) and sleeve/bypassuac.x64.dll from v4.0 to at least v4.4"
= "gssincla@google.com"
= "eef83901-63d9-55a3-b115-03f420416177"
= "2022-11-18"
= "2022-11-19"
= "https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse"
= "https://github.com/chronicle/GCTI/blob/1c5fd42b1895098527fde00c2d9757edf6b303bb/YARA/CobaltStrike/CobaltStrike__Resources_Bypassuac_x64_Dll_v3_3_to_v3_14_and_Sleeve_Bypassuac_x64_Dll_v4_0_and_v4_x.yara#L17-L86"
= "https://github.com/chronicle/GCTI/blob/1c5fd42b1895098527fde00c2d9757edf6b303bb/LICENSE"
= "9ecf56e9099811c461d592c325c65c4f9f27d947cbdf3b8ef8a98a43e583aecb"
= "d76e3601f61ae164a8df9048d59d15cd6913e64adb93132244e83f40bf67d86a"
= 75
= 85
= ""
strings:
$deleteFileCOM = {
48 8B [5]
45 33 ??
48 8B ??
FF 90 90 00 00 00
85 C0
75 ??
48 8B [5]
48 8B ??
FF 92 A8 00 00 00
85 C0
}
$copyFileCOM = {
48 8B [5]
4C 8B [5]
48 8B [5]
48 8B ??
4C 8B ??
48 89 [3]
FF 90 80 00 00 00
85 C0
0F 85 [4]
48 8B [5]
48 8B 11
FF 92 A8 00 00 00
}
condition:
all of them
}
Cadenas (2 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $deleteFileCOM | hex | { 48 8B [5] 45 33 ?? 48 8B ?? FF 90 90 00 00 00 85 C0 75 ?? 48 8B [5] 48 8B ?? FF 92 A8 00 00 00 85 C0 } | |
| $copyFileCOM | hex | { 48 8B [5] 4C 8B [5] 48 8B [5] 48 8B ?? 4C 8B ?? 48 89 [3] FF 90 80 00 00 00 85 C0 0F 85 [4] 48 8B [5] 48 8B 11 FF 92 A8 00 … |
Condición
all of themEn palabras sencillas (Heurística)
- Deben coincidir todos los patrones de la regla.
Prueba esta regla en tu navegador
Arrastra un archivo para escanearlo con esta regla usando YARA-X compilado a WebAssembly. No se sube nada.
Hashes de muestras
Hashes de las muestras que el autor lista en los metadatos de la regla (búscalos en tu plataforma de threat intelligence).
- 9ecf56e9099811c461d592c325c65c4f9f27d947cbdf3b8ef8a98a43e583aecb
Licencia y atribución
Autor: gssincla@google.com
Repositorio de origen: Google Cloud Threat Intelligence (GCTI) @ 1c5fd42b18
Licencia: Apache License 2.0 (licencia del repositorio)
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: eef83901-63d9-55a3-b115-03f420416177
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