SigmaHQ/rules/proxy/proxy_cobalt_ocsp.yml

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YAML

title: CobaltStrike Malleable (OCSP) Profile
id: 37325383-740a-403d-b1a2-b2b4ab7992e7
status: experimental
description: Detects Malleable (OCSP) Profile with Typo (OSCP) in URL
references:
- https://github.com/rsmudge/Malleable-C2-Profiles/blob/master/normal/ocsp.profile
author: Markus Neis
date: 2019/11/12
modified: 2020/09/02
tags:
- attack.defense_evasion
- attack.command_and_control
- attack.t1071.001
- attack.t1043 # an old one
logsource:
category: proxy
detection:
selection:
c-uri: '*/oscp/*'
cs-host: 'ocsp.verisign.com'
condition: selection
falsepositives:
- Unknown
level: high