rules/proxy/proxy_cobalt_ocsp.yml

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

    condition: selection
falsepositives:
    - Unknown
level: high
Unified line terminators of rules to Unix 2019-11-12 23:05:36 +01:00			`title: CobaltStrike Malleable (OCSP) Profile`
Added UUIDs to rules 2019-11-12 23:12:27 +01:00			`id: 37325383-740a-403d-b1a2-b2b4ab7992e7`
Unified line terminators of rules to Unix 2019-11-12 23:05:36 +01:00			`status: experimental`
			`description: Detects Malleable (OCSP) Profile with Typo (OSCP) in URL`
			`author: Markus Neis`
fix: fixed missing date fields in proxy rules 2020-01-30 15:20:52 +01:00			`date: 2019/11/12`
att&ck tags review: application, apt, cloud, generic, proxy 2020-09-03 14:16:47 +00:00			`modified: 2020/09/02`
Second round 2020-09-15 07:02:30 -06:00			`references:`
			`- https://github.com/rsmudge/Malleable-C2-Profiles/blob/master/normal/ocsp.profile`
Unified line terminators of rules to Unix 2019-11-12 23:05:36 +01:00			`tags:`
att&ck tags review: application, apt, cloud, generic, proxy 2020-09-03 14:16:47 +00:00			`- attack.defense_evasion`
			`- attack.command_and_control`
			`- attack.t1071.001`
			`- attack.t1043 # an old one`
Unified line terminators of rules to Unix 2019-11-12 23:05:36 +01:00			`logsource:`
			`category: proxy`
			`detection:`
			`selection:`
Update proxy_cobalt_ocsp.yml 2020-10-15 23:19:56 -03:00			`c-uri\|contains: '/oscp/'`
Fixed proxy rule field names 2019-12-07 00:11:33 +01:00			`cs-host: 'ocsp.verisign.com'`
fix: fixed missing date fields in proxy rules 2020-01-30 15:20:52 +01:00
			`condition: selection`
Unified line terminators of rules to Unix 2019-11-12 23:05:36 +01:00			`falsepositives:`
			`- Unknown`
			`level: high`