SeDebugPrivilege Enabled by a Suspicious Processedit
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.*
- logs-system.security*
Severity: medium
Risk score: 47
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Privilege Escalation
Version: 7
Rule authors:
- Elastic
Rule license: Elastic License v2
Setupedit
Setup
Windows Event 4703 logs Token Privileges changes and need to be configured (Enable).
Steps to implement the logging policy with Advanced Audit Configuration:
Computer Configuration > Policies > Windows Settings > Security Settings > Advanced Audit Policies Configuration > Audit Policies > Detailed Tracking > Token Right Adjusted Events (Success)
Rule queryedit
any where host.os.type == "windows" and 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")
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/