Privilege Escalation via Rogue Named Pipe Impersonation
Elastic Stack Serverless Security
Identifies a privilege escalation attempt via rogue named pipe impersonation. An adversary may abuse this technique by masquerading as a known named pipe and manipulating a privileged process to connect to it.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-windows.*
Severity: high
Risk score: 73
Runs every: 5m
Searches indices from: now-9m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)
Maximum alerts per execution: 100
References:
- https://itm4n.github.io/printspoofer-abusing-impersonate-privileges/
- https://github.com/zcgonvh/EfsPotato
- https://twitter.com/SBousseaden/status/1429530155291193354
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Privilege Escalation
Version: 1
Rule authors:
- Elastic
Rule license: Elastic License v2
Named Pipe Creation Events need to be enabled within the Sysmon configuration by including the following settings:
condition equal "contains" and keyword equal "pipe"
file where event.action : "Pipe Created*" and
/* normal sysmon named pipe creation events truncate the pipe keyword */
file.name : "\\*\\Pipe\\*"
Framework: MITRE ATT&CKTM
Tactic:
- Name: Privilege Escalation
- ID: TA0004
- Reference URL: https://attack.mitre.org/tactics/TA0004/
Technique:
- Name: Access Token Manipulation
- ID: T1134
- Reference URL: https://attack.mitre.org/techniques/T1134/