YARA · Signature Base (Florian Roth / Nextron)
SIGNATURE_BASE_SUSP_Nimbus_Manticore_PDF_Indicators_May26
Detects inidcators found in PDF files created by Nimbus Manticore (UNC1549). The PDF files usually contain fake job offers or descriptions to lure victims into installing malware.
- Autor
- Jonathan Peters (Nextron Systems)
- Fecha
- 2026-05-25
- Modificada
- 2026-06-01
- Puntuación / Calidad
- 70 / 85
Qué detecta esta regla
Detects inidcators found in PDF files created by Nimbus Manticore (UNC1549). The PDF files usually contain fake job offers or descriptions to lure victims into installing malware.
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
rule SIGNATURE_BASE_SUSP_Nimbus_Manticore_PDF_Indicators_May26
{
meta:
= "Detects inidcators found in PDF files created by Nimbus Manticore (UNC1549). The PDF files usually contain fake job offers or descriptions to lure victims into installing malware."
= "Jonathan Peters (Nextron Systems)"
= "aae8ed59-caf0-56ae-9c38-9caca96a31e0"
= "2026-05-25"
= "2026-06-01"
= "https://www.nextron-systems.com/2026/06/01/detecting-nimbus-manticore-and-their-sideloading-infection-chains/"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/apt_apt35_malware_may26.yar#L71-L83"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
= "620c51f4376cb79f0109c21971c28661418ae50b119585e3ffdb8011189fcb7b"
= "4479c844cae60f0cabdb8b57e6de9961d4b9d5e9afdc43793fd936e0bed6899a"
= 70
= 85
= ""
strings:
$op = { 3C 3C 2F 41 75 74 68 6F 72 28 4A 65 72 72 79 29 20 2F 43 72 65 61 74 6F 72 28 FE FF 00 4D 00 69 00 63 00 72 00 6F 00 73 00 6F 00 66 00 74 00 AE 00 20 00 57 00 6F 00 72 00 64 00 20 00 4C 00 54 00 53 00 43 29 }
condition:
1 of them
}
Cadenas (1 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $op | hex | { 3C 3C 2F 41 75 74 68 6F 72 28 4A 65 72 72 79 29 20 2F 43 72 65 61 74 6F 72 28 FE FF 00 4D 00 69 00 63 00 72 00 6F 00 73 00 6F 00 66 00 74 00 AE 00 20 00 57 00 … |
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.
Hashes de muestras
Hashes de las muestras que el autor lista en los metadatos de la regla (búscalos en tu plataforma de threat intelligence).
- 620c51f4376cb79f0109c21971c28661418ae50b119585e3ffdb8011189fcb7b
Licencia y atribución
Autor: Jonathan Peters (Nextron Systems)
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: aae8ed59-caf0-56ae-9c38-9caca96a31e0
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