Process Termination followed by Deletionedit
Identifies a process termination event quickly followed by the deletion of its executable file. Malware tools and other non-native files dropped or created on a system by an adversary may leave traces to indicate to what occurred. Removal of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary’s footprint.
Rule type: eql
Rule indices:
- 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: 100
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Defense Evasion
Version: 3 (version history)
Added (Elastic Stack release): 7.11.0
Last modified (Elastic Stack release): 7.16.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule queryedit
sequence by host.id with maxspan=5s [process where event.type ==
"end" and process.code_signature.trusted == false and not
process.executable : ("C:\\Windows\\SoftwareDistribution\\*.exe",
"C:\\Windows\\WinSxS\\*.exe") ] by process.executable [file
where event.type == "deletion" and file.extension : ("exe", "scr",
"com")] by file.path
Threat mappingedit
Framework: 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 historyedit
- Version 3 (7.16.0 release)
-
- Formatting only
- Version 2 (7.12.0 release)
-
- Formatting only