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File Creation Time Changededit
Identifies 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:
- Elastic
- Host
- Windows
- Threat Detection
- Defense Evasion
Version: 1
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule queryedit
file where 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/