IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
File Creation Time Changed
editFile Creation Time Changed
editIdentifies modification of a file creation time. Adversaries may modify file time attributes to blend malicious content with existing files. Timestomping is a technique that modifies the timestamps of a file often to mimic files that are in trusted directories.
Rule type: eql
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: None
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Defense Evasion
Version: 3
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editfile where host.os.type == "windows" and event.code : "2" and /* Requires Sysmon EventID 2 - File creation time change */ event.action : "File creation time changed*" and not process.executable : ("?:\\Program Files\\*", "?:\\Program Files (x86)\\*", "?:\\Windows\\system32\\msiexec.exe", "?:\\Windows\\syswow64\\msiexec.exe", "?:\\Windows\\system32\\svchost.exe", "?:\\WINDOWS\\system32\\backgroundTaskHost.exe", "?:\\Users\\*\\AppData\\Local\\Google\\Chrome\\Application\\chrome.exe", "?:\\Users\\*\\AppData\\Local\\slack\\app-*\\slack.exe", "?:\\Users\\*\\AppData\\Local\\GitHubDesktop\\app-*\\GitHubDesktop.exe", "?:\\Users\\*\\AppData\\Local\\Microsoft\\Teams\\current\\Teams.exe", "?:\\Users\\*\\AppData\\Local\\Microsoft\\OneDrive\\OneDrive.exe") and not file.extension : ("tmp", "~tmp", "xml") and not user.name : ("SYSTEM", "Local Service", "Network Service")
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Indicator Removal
- ID: T1070
- Reference URL: https://attack.mitre.org/techniques/T1070/
-
Sub-technique:
- Name: Timestomp
- ID: T1070.006
- Reference URL: https://attack.mitre.org/techniques/T1070/006/