Privilege Escalation via Rogue Named Pipe Impersonation
editPrivilege Escalation via Rogue Named Pipe Impersonation
editIdentifies 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 (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Privilege Escalation
- Sysmon Only
Version: 102
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
editNamed Pipe Creation Events need to be enabled within the Sysmon configuration by including the following settings: `condition equal "contains" and keyword equal "pipe"` If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
Rule query
editfile 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/