YARA · Signature Base (Florian Roth / Nextron)
SIGNATURE_BASE_SUSP_Scheduledtasks_Nimbus_Manticore_Persistence_May26
Detects scheduled task used for persistence by Nimbus Manticore (UNC1549). The task is used to persistenly load a custom implant that features data exfiltration and remote control capabilities.
- Autor
- Jonathan Peters (Nextron Systems)
- Fecha
- 2026-05-27
- Modificada
- 2026-06-01
- Puntuación / Calidad
- 75 / 85
Qué detecta esta regla
Detects scheduled task used for persistence by Nimbus Manticore (UNC1549). The task is used to persistenly load a custom implant that features data exfiltration and remote control capabilities.
Define 3 patrones (3 de texto, 0 hex, 0 regex).
Resumen generado a partir de los metadatos y la condición de la regla.
Código de la regla
rule SIGNATURE_BASE_SUSP_Scheduledtasks_Nimbus_Manticore_Persistence_May26 : FILE
{
meta:
= "Detects scheduled task used for persistence by Nimbus Manticore (UNC1549). The task is used to persistenly load a custom implant that features data exfiltration and remote control capabilities."
= "Jonathan Peters (Nextron Systems)"
= "f8e8e8e1-1c31-5471-b7c0-ec260c8ef462"
= "2026-05-27"
= "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#L1-L16"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
= "dc4c82625db0dd8db2098387f227ade773d31747b259b3ffc2c366c47d9b0d20"
= 75
= 85
= "FILE"
strings:
$a0 = "<Task version=" wide
$a1 = "xmlns=\"http://schemas.microsoft.com/windows/" wide
$x1 = "<Arguments>doit" wide
condition:
uint16( 0 ) == 0xfeff and all of them
}
Cadenas (3 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $a0 | texto | "<Task version=" | wide |
| $a1 | texto | "xmlns=\"http://schemas.microsoft.com/windows/" | wide |
| $x1 | texto | "<Arguments>doit" | wide |
Condición
uint16( 0 ) == 0xfeff and 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.
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: f8e8e8e1-1c31-5471-b7c0-ec260c8ef462
Etiquetas:FILE
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