IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Potential Defense Evasion via CMSTP.exeedit
The Microsoft Connection Manager Profile Installer (CMSTP.exe) is a command-line program to install Connection Manager service profiles, which accept installation information file (INF) files. Adversaries may abuse CMSTP to proxy the execution of malicious code by supplying INF files that contain malicious commands.
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:
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Data Source: Elastic Defend
- Rule Type: BBR
Version: 1
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule queryedit
process where host.os.type == "windows" and event.type == "start" and process.name : "cmstp.exe" and process.args == "/s"
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: System Binary Proxy Execution
- ID: T1218
- Reference URL: https://attack.mitre.org/techniques/T1218/
-
Sub-technique:
- Name: CMSTP
- ID: T1218.003
- Reference URL: https://attack.mitre.org/techniques/T1218/003/