IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

« Process Termination followed by Deletion Program Files Directory Masquerading »

› › ›

Processes with Trailing Spaces

edit

Processes with Trailing Spaces

edit

Identify instances where adversaries include trailing space characters to mimic regular files, disguising their activity to evade default file handling mechanisms.

Rule type: eql

Rule indices:

logs-endpoint.events.*

Severity: low

Risk score: 21

Runs every: 60m

Searches indices from: now-119m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

Domain: Endpoint
OS: Linux
OS: macOS
Use Case: Threat Detection
Tactic: Defense Evasion
Rule Type: BBR
Data Source: Elastic Defend

Version: 1

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

edit

process where  event.type in ("start", "process_started") and process.name : "* "

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: Masquerading
- ID: T1036
- Reference URL: https://attack.mitre.org/techniques/T1036/
Sub-technique:
- Name: Space after Filename
- ID: T1036.006
- Reference URL: https://attack.mitre.org/techniques/T1036/006/

« Process Termination followed by Deletion Program Files Directory Masquerading »