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Conhost Spawned By Suspicious Parent Process
editConhost Spawned By Suspicious Parent Process
editDetects when the Console Window Host (conhost.exe) process is spawned by a suspicious parent process, which could be indicative of code injection.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
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:
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Execution
Version: 5
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
edit## Config If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
Rule query
editprocess where event.type in ("start", "process_started") and
process.name : "conhost.exe" and
process.parent.name : ("svchost.exe", "lsass.exe", "services.exe", "smss.exe", "winlogon.exe", "explorer.exe",
"dllhost.exe", "rundll32.exe", "regsvr32.exe", "userinit.exe", "wininit.exe", "spoolsv.exe",
"wermgr.exe", "csrss.exe", "ctfmon.exe")
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Technique:
- Name: Command and Scripting Interpreter
- ID: T1059
- Reference URL: https://attack.mitre.org/techniques/T1059/