IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
File and Directory Permissions Modification
editFile and Directory Permissions Modification
editIdentifies the change of permissions/ownership of files/folders through built-in Windows utilities. Threat actors may require permission modification of files/folders to change, modify or delete them.
Rule type: eql
Rule indices:
- logs-endpoint.events.process-*
Severity: low
Risk score: 21
Runs every: 60m
Searches indices from: now-119m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References: None
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Rule Type: BBR
- Data Source: Elastic Defend
Version: 2
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editprocess where event.type == "start" and host.os.type == "windows" and
(
((process.name: "icacls.exe" or process.pe.original_file_name == "iCACLS.EXE") and process.args: ("*:F", "/reset", "/setowner", "*grant*")) or
((process.name: "cacls.exe" or process.pe.original_file_name == "CACLS.EXE") and process.args: ("/g", "*:f")) or
((process.name: "takeown.exe" or process.pe.original_file_name == "takeown.exe") and process.args: ("/F")) or
((process.name: "attrib.exe" or process.pe.original_file_name== "ATTRIB.EXE") and process.args: "-r")
) and not user.id : "S-1-5-18" and
not (
process.args : ("C:\\ProgramData\\Lenovo\\*", "C:\\ProgramData\\Adobe\\*", "C:\\ProgramData\\ASUS\\ASUS*")
)
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: File and Directory Permissions Modification
- ID: T1222
- Reference URL: https://attack.mitre.org/techniques/T1222/
-
Sub-technique:
- Name: Windows File and Directory Permissions Modification
- ID: T1222.001
- Reference URL: https://attack.mitre.org/techniques/T1222/001/