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Timestomping using Touch Command
editTimestomping using Touch Command
editTimestomping is an anti-forensics technique which is used to modify the timestamps of a file, often to mimic files that are in the same folder.
Rule type: eql
Rule indices:
- auditbeat-*
- logs-endpoint.events.*
Severity: medium
Risk score: 47
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 33
Tags:
- Elastic
- Host
- Linux
- macOS
- Threat Detection
- Defense Evasion
Version: 100 (version history)
Added (Elastic Stack release): 7.11.0
Last modified (Elastic Stack release): 8.5.0
Rule authors: Elastic
Rule license: Elastic License v2
Investigation guide
editRule query
editprocess where event.type == "start" and process.name : "touch" and user.id != "0" and process.args : ("-r", "-t", "-a*","-m*") and not process.args : ("/usr/lib/go-*/bin/go", "/usr/lib/dracut/dracut- functions.sh", "/tmp/KSInstallAction.*/m/.patch/*")
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Indicator Removal on Host
- ID: T1070
- Reference URL: https://attack.mitre.org/techniques/T1070/
Rule version history
edit- Version 100 (8.5.0 release)
-
- Formatting only
- Version 7 (8.4.0 release)
-
- Formatting only
- Version 5 (8.2.0 release)
-
- Formatting only
- Version 4 (7.13.0 release)
-
-
Updated query, changed from:
process where event.type in ("start", "process_started") and process.name : "touch" and process.args : ("-r", "-t", "-a*","-m*")
-
- Version 3 (7.12.0 release)
-
-
Updated query, changed from:
process where event.type in ("start", "process_started") and process.name == "touch" and wildcard(process.args, "-r", "-t", "-a*","-m*")
-
- Version 2 (7.11.2 release)
-
- Formatting only