YARA · Signature Base (Florian Roth / Nextron)
SIGNATURE_BASE_MAL_Cisco_LINE_VIPER_Shellcode_Deobfuscation_Routine
Detects LINE VIPER Cisco ASA malware code as part of a shellcode deobfuscation routine.
- Autor
- NCSC
- Fecha
- 2025-09-25
- Modificada
- 2026-05-15
- Puntuación / Calidad
- 85 / 85
Qué detecta esta regla
Detects LINE VIPER Cisco ASA malware code as part of a shellcode deobfuscation routine.
Define 4 patrones (3 de texto, 1 hex, 0 regex).
Resumen generado a partir de los metadatos y la condición de la regla.
Código de la regla
rule SIGNATURE_BASE_MAL_Cisco_LINE_VIPER_Shellcode_Deobfuscation_Routine
{
meta:
= "Detects LINE VIPER Cisco ASA malware code as part of a shellcode deobfuscation routine."
= "NCSC"
= "608282b5-f296-5d21-b88b-92cd53128d89"
= "2025-09-25"
= "2026-05-15"
= "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/apt_cisco_asa_lineviper_rayinitiator_sep25.yar#L78-L98"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
= "9feb3703a99c529b28c12646a0834e77d3377f1fd75ec69c46201cb0d4d22775"
= 85
= 85
= ""
strings:
$xc1 = {
48 8B 7F 08 48 8D 5F 70 49 C7 C1 00 18 00 00 49 C7 C0
20 00 00 00 48 89 DF 8A 01 32 07 48 FF C7 41 FF C8 4D 85 C0 75 F3
88 01 48 FF C1 41 FF C9 4D 85 C9 75 DA
}
$x1 = "SIt/CEiNX3BJx8EAGAAAScfAIAAAAEiJ34oBMgdI/8dB/8hNhcB184gBSP/BQf/JTYXJdd"
$x2 = "iLfwhIjV9wScfBABgAAEnHwCAAAABIid+KATIHSP/HQf/ITYXAdfOIAUj/wUH/yU2FyXXa"
$x3 = "Ii38ISI1fcEnHwQAYAABJx8AgAAAASInfigEyB0j/x0H/yE2FwHXziAFI/8FB/8lNhcl12"
condition:
1 of them
}
Cadenas (4 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $xc1 | hex | { 48 8B 7F 08 48 8D 5F 70 49 C7 C1 00 18 00 00 49 C7 C0 20 00 00 00 48 89 DF 8A 01 32 07 48 FF C7 41 FF C8 4D 85 C0 75 F3 88 01 48 FF … | |
| $x1 | texto | "SIt/CEiNX3BJx8EAGAAAScfAIAAAAEiJ34oBMgdI/8dB/8hNhcB184gBSP/BQf/JTYXJdd" | |
| $x2 | texto | "iLfwhIjV9wScfBABgAAEnHwCAAAABIid+KATIHSP/HQf/ITYXAdfOIAUj/wUH/yU2FyXXa" | |
| $x3 | texto | "Ii38ISI1fcEnHwQAYAABJx8AgAAAASInfigEyB0j/x0H/yE2FwHXziAFI/8FB/8lNhcl12" |
Condición
1 of themEn palabras sencillas (Heurística)
- Deben coincidir al menos 1 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.
Licencia y atribución
Autor: NCSC
Repositorio de origen: Signature Base (Florian Roth / Nextron) @ 94a1c48d7a
Licencia: Detection Rule License 1.1 (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: 608282b5-f296-5d21-b88b-92cd53128d89
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