YARA · Signature Base (Florian Roth / Nextron)
SIGNATURE_BASE_LOG_CVE_2021_27065_Exchange_Forensic_Artefacts_Mar21_2
Detects suspicious log entries that indicate requests as described in reports on HAFNIUM activity
- Autor
- Florian Roth (Nextron Systems)
- Fecha
- 2021-03-10
- Modificada
- 2023-12-05
- Puntuación / Calidad
- 65 / 85
Qué detecta esta regla
Detects suspicious log entries that indicate requests as described in reports on HAFNIUM activity
Define 1 patrones (0 de texto, 0 hex, 1 regex).
Resumen generado a partir de los metadatos y la condición de la regla.
Código de la regla
rule SIGNATURE_BASE_LOG_CVE_2021_27065_Exchange_Forensic_Artefacts_Mar21_2 : LOG
{
meta:
= "Detects suspicious log entries that indicate requests as described in reports on HAFNIUM activity"
= "Florian Roth (Nextron Systems)"
= "37a26def-b360-518e-a4ab-9604a5b39afd"
= "2021-03-10"
= "2023-12-05"
= "https://www.praetorian.com/blog/reproducing-proxylogon-exploit/"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/apt_hafnium_log_sigs.yar#L92-L104"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
= "13e2e46689bc0e87c3cf13dc2ce213c384afe6c03c21e62a467974a0518c12da"
= 65
= 85
= "LOG"
strings:
$sr1 = /GET \/rpc\/ &CorrelationID=<empty>;&RequestId=[^\n]{40,600} (200|301|302)/
condition:
$sr1
}
Cadenas (1 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $sr1 | regex | /GET \/rpc\/ &CorrelationID=<empty>;&RequestId=[^\n]{40,600} (200|301|302)/ |
Condición
$sr1En palabras sencillas (Heurística)
- El patrón $sr1 debe estar presente.
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: Florian Roth (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: 37a26def-b360-518e-a4ab-9604a5b39afd
Etiquetas:LOG
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