YARA · Signature Base (Florian Roth / Nextron)
SIGNATURE_BASE_LOG_Proxynotshell_POC_CVE_2022_41040_Nov22
Detects logs generated after a successful exploitation using the PoC code against CVE-2022-41040 and CVE-2022-41082 (aka ProxyNotShell) in Microsoft Exchange servers
- Autor
- Florian Roth (Nextron Systems)
- Fecha
- 2022-11-17
- Modificada
- 2023-12-05
- Puntuación / Calidad
- 70 / 85
Qué detecta esta regla
Detects logs generated after a successful exploitation using the PoC code against CVE-2022-41040 and CVE-2022-41082 (aka ProxyNotShell) in Microsoft Exchange servers
Define 5 patrones (5 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_LOG_Proxynotshell_POC_CVE_2022_41040_Nov22 : CVE_2022_41040 CVE_2022_41082
{
meta:
= "Detects logs generated after a successful exploitation using the PoC code against CVE-2022-41040 and CVE-2022-41082 (aka ProxyNotShell) in Microsoft Exchange servers"
= "Florian Roth (Nextron Systems)"
= "1e47d124-3103-5bf5-946f-b1bb69ff2c8e"
= "2022-11-17"
= "2023-12-05"
= "https://github.com/testanull/ProxyNotShell-PoC"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/vuln_proxynotshell_cve_2022_41040.yar#L2-L20"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
= "7f91502fd9c59180970fc4253134582b44ba318db03ef4eb575257b2f3818d94"
= 70
= 85
= "CVE-2022-41040, CVE-2022-41082"
strings:
$aa1 = " POST " ascii wide
$aa2 = " GET " ascii wide
$ab1 = " 200 " ascii wide
$s01 = "/autodiscover.json x=a" ascii wide
$s02 = "/autodiscover/admin@localhost/" ascii wide
condition:
1 of ( $aa* ) and $ab1 and 1 of ( $s* )
}
Cadenas (5 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $aa1 | texto | " POST " | ascii wide |
| $aa2 | texto | " GET " | ascii wide |
| $ab1 | texto | " 200 " | ascii wide |
| $s01 | texto | "/autodiscover.json x=a" | ascii wide |
| $s02 | texto | "/autodiscover/admin@localhost/" | ascii wide |
Condición
1 of ( $aa* ) and $ab1 and 1 of ( $s* )En palabras sencillas (Heurística)
- Deben coincidir al menos 1 patrones de ( $aa* ).
- Deben coincidir al menos 1 patrones de ( $s* ).
- El patrón $ab1 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: 1e47d124-3103-5bf5-946f-b1bb69ff2c8e
Etiquetas:CVE_2022_41040CVE_2022_41082
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