YARA · Signature Base (Florian Roth / Nextron)
SIGNATURE_BASE_EXPL_LOG_CVE_2021_27065_Exchange_Forensic_Artefacts_Mar21_1
Detects forensic artefacts found in HAFNIUM intrusions exploiting CVE-2021-27065
- Autor
- Florian Roth (Nextron Systems)
- Fecha
- 2021-03-02
- Modificada
- 2023-12-05
- Puntuación / Calidad
- 75 / 85
Qué detecta esta regla
Detects forensic artefacts found in HAFNIUM intrusions exploiting CVE-2021-27065
Define 1 patrones (1 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_EXPL_LOG_CVE_2021_27065_Exchange_Forensic_Artefacts_Mar21_1 : LOG CVE_2021_27065
{
meta:
= "Detects forensic artefacts found in HAFNIUM intrusions exploiting CVE-2021-27065"
= "Florian Roth (Nextron Systems)"
= "dcc1f741-cab0-5a0b-a261-a6bd05989723"
= "2021-03-02"
= "2023-12-05"
= "https://www.volexity.com/blog/2021/03/02/active-exploitation-of-microsoft-exchange-zero-day-vulnerabilities/"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/apt_hafnium_log_sigs.yar#L2-L13"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
= "9306cf177928266ea921461e9da80ad5bb37e1e0848559898a414956cfbc2b49"
= 75
= 85
= "LOG, CVE-2021-27065"
strings:
$s1 = "S:CMD=Set-OabVirtualDirectory.ExternalUrl='" ascii wide fullword
condition:
1 of them
}
Cadenas (1 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $s1 | texto | "S:CMD=Set-OabVirtualDirectory.ExternalUrl='" | ascii wide fullword |
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: 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: dcc1f741-cab0-5a0b-a261-a6bd05989723
Etiquetas:LOGCVE_2021_27065
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