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SeDebugPrivilege Enabled by a Suspicious Process

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SeDebugPrivilege Enabled by a Suspicious Process

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Identifies the creation of a process running as SYSTEM and impersonating a Windows core binary privileges. Adversaries may create a new process with a different token to escalate privileges and bypass access controls.

Rule type: eql

Rule indices:

winlogbeat-*
logs-windows.*

Severity: medium

Risk score: 47

Runs every: 5 minutes

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

Version: 1

Added (Elastic Stack release): 8.6.0

Rule authors: Elastic

Rule license: Elastic License v2

Investigation guide

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Rule query

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any where event.provider: "Microsoft-Windows-Security-Auditing" and
event.action : "Token Right Adjusted Events" and
winlog.event_data.EnabledPrivilegeList : "SeDebugPrivilege" and /*
exclude processes with System Integrity */ not
winlog.event_data.SubjectUserSid : ("S-1-5-18", "S-1-5-19",
"S-1-5-20") and not winlog.event_data.ProcessName :
("?:\\Windows\\System32\\msiexec.exe",
"?:\\Windows\\SysWOW64\\msiexec.exe",
"?:\\Windows\\System32\\lsass.exe",
"?:\\Windows\\WinSxS\\*", "?:\\Program Files\\*",
"?:\\Program Files (x86)\\*",
"?:\\Windows\\System32\\MRT.exe",
"?:\\Windows\\System32\\cleanmgr.exe",
"?:\\Windows\\System32\\taskhostw.exe",
"?:\\Windows\\System32\\mmc.exe",
"?:\\Users\\*\\AppData\\Local\\Temp\\*-*\\DismHost.exe",
"?:\\Windows\\System32\\auditpol.exe",
"?:\\Windows\\System32\\wbem\\WmiPrvSe.exe",
"?:\\Windows\\SysWOW64\\wbem\\WmiPrvSe.exe")

Threat mapping

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Framework: MITRE ATT&CK^TM

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/

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