PowerShell Suspicious Discovery Related Windows API Functions
editPowerShell Suspicious Discovery Related Windows API Functions
editThis rule detects the use of discovery-related Windows API functions in PowerShell Scripts. Attackers can use these functions to perform various situational awareness related activities, like enumerating users, shares, sessions, domain trusts, groups, etc.
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:
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Discovery
Version: 2
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editevent.category:process and
powershell.file.script_block_text : (
NetShareEnum or
NetWkstaUserEnum or
NetSessionEnum or
NetLocalGroupEnum or
NetLocalGroupGetMembers or
DsGetSiteName or
DsEnumerateDomainTrusts or
WTSEnumerateSessionsEx or
WTSQuerySessionInformation or
LsaGetLogonSessionData or
QueryServiceObjectSecurity
)
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
-
Technique:
- Name: Network Share Discovery
- ID: T1135
- Reference URL: https://attack.mitre.org/techniques/T1135/
-
Technique:
- Name: Permission Groups Discovery
- ID: T1069
- Reference URL: https://attack.mitre.org/techniques/T1069/
-
Sub-technique:
- Name: Local Groups
- ID: T1069.001
- Reference URL: https://attack.mitre.org/techniques/T1069/001/
-
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/