Unusual Child Process from a System Virtual Process
editUnusual Child Process from a System Virtual Process
editIdentifies a suspicious child process of the Windows virtual system process, which could indicate code injection.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.process-*
- logs-windows.forwarded*
- logs-windows.sysmon_operational-*
- endgame-*
- logs-system.security*
- logs-m365_defender.event-*
- logs-sentinel_one_cloud_funnel.*
Severity: high
Risk score: 73
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References: None
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Data Source: Elastic Endgame
- Data Source: Elastic Defend
- Data Source: System
- Data Source: Microsoft Defender for Endpoint
- Data Source: Sysmon
- Data Source: SentinelOne
Version: 311
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editprocess where host.os.type == "windows" and event.type == "start" and
process.parent.pid == 4 and process.executable : "?*" and
not process.executable : ("Registry", "MemCompression", "?:\\Windows\\System32\\smss.exe")
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Process Injection
- ID: T1055
- Reference URL: https://attack.mitre.org/techniques/T1055/