IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
PowerShell Script with Token Impersonation Capabilities
editPowerShell Script with Token Impersonation Capabilities
editDetects scripts that contain PowerShell functions, structures, or Windows API functions related to token impersonation/theft. Attackers may duplicate then impersonate another user’s token to escalate privileges and bypass access controls.
Rule type: query
Rule indices:
- winlogbeat-*
- logs-windows.*
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:
- https://github.com/decoder-it/psgetsystem
- https://github.com/PowerShellMafia/PowerSploit/blob/master/Privesc/Get-System.ps1
- https://github.com/EmpireProject/Empire/blob/master/data/module_source/privesc/Invoke-MS16032.ps1
- https://github.com/atc-project/atc-data/blob/master/docs/Logging_Policies/LP_0109_windows_powershell_script_block_log.md
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Privilege Escalation
- Data Source: PowerShell Logs
Version: 6
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
editRule query
editevent.category:process and host.os.type:windows and
powershell.file.script_block_text:(
"Invoke-TokenManipulation" or
"ImpersonateNamedPipeClient" or
"NtImpersonateThread" or
(
"STARTUPINFOEX" and
"UpdateProcThreadAttribute"
) or
(
"AdjustTokenPrivileges" and
"SeDebugPrivilege"
) or
(
("DuplicateToken" or
"DuplicateTokenEx") and
("SetThreadToken" or
"ImpersonateLoggedOnUser" or
"CreateProcessWithTokenW" or
"CreatePRocessAsUserW" or
"CreateProcessAsUserA")
)
) and not
(user.id:("S-1-5-18" or "S-1-5-19") and
file.directory: "C:\\ProgramData\\Microsoft\\Windows Defender Advanced Threat Protection\\Downloads")
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/
-
Sub-technique:
- Name: Token Impersonation/Theft
- ID: T1134.001
- Reference URL: https://attack.mitre.org/techniques/T1134/001/
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Technique:
- Name: Command and Scripting Interpreter
- ID: T1059
- Reference URL: https://attack.mitre.org/techniques/T1059/
-
Sub-technique:
- Name: PowerShell
- ID: T1059.001
- Reference URL: https://attack.mitre.org/techniques/T1059/001/
-
Technique:
- Name: Native API
- ID: T1106
- Reference URL: https://attack.mitre.org/techniques/T1106/