[New Rule] Timestomping using Touch Command (#463)

* [New Rule] Timestomping using Touch Command * Update defense_evasion_timestomp_touch.toml * added macOS tag * Update rules/linux/defense_evasion_timestomp_touch.toml Co-authored-by: David French <56409778+threat-punter@users.noreply.github.com> Co-authored-by: David French <56409778+threat-punter@users.noreply.github.com>
2020-11-17 23:29:47 +01:00
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+[metadata]
+creation_date = "2020/11/03"
+ecs_version = ["1.6.0"]
+maturity = "production"
+updated_date = "2020/11/03"
+
+[rule]
+author = ["Elastic"]
+description = """
+Timestomping 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.
+"""
+from = "now-9m"
+index = ["auditbeat-*", "logs-endpoint.events.*"]
+language = "eql"
+license = "Elastic License"
+max_signals = 33
+name = "Timestomping using Touch Command"
+risk_score = 47
+rule_id = "b0046934-486e-462f-9487-0d4cf9e429c6"
+severity = "medium"
+tags = ["Elastic", "Host", "Linux", "macOS", "Threat Detection", "Defense Evasion"]
+type = "eql"
+
+query = '''
+process where event.type in ("start", "process_started") and
+ process.name == "touch" and wildcard(process.args, "-r", "-t", "-a*","-m*")
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1099"
+name = "Timestomp"
+reference = "https://attack.mitre.org/techniques/T1099/"
+
+
+[rule.threat.tactic]
+id = "TA0005"
+name = "Defense Evasion"
+reference = "https://attack.mitre.org/tactics/TA0005/"
+