This documentation contains work-in-progress information for future Elastic Stack and Cloud releases. Use the version selector to view supported release docs. It also contains some Elastic Cloud serverless information. Check out our serverless docs for more details.

« Startup or Run Key Registry Modification A scheduled task was created »

› ›

Execution of Persistent Suspicious Program

edit

IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.

Execution of Persistent Suspicious Program

edit

Identifies execution of suspicious persistent programs (scripts, rundll32, etc.) by looking at process lineage and command line usage.

Rule type: eql

Rule indices:

winlogbeat-*
logs-endpoint.events.*
logs-windows.*

Severity: medium

Risk score: 47

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:

Elastic
Host
Windows
Threat Detection
Persistence

Version: 102

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

edit

/* userinit followed by explorer followed by early child process of explorer (unlikely to be launched interactively) within 1m */
sequence by host.id, user.name with maxspan=1m
  [process where event.type == "start" and process.name : "userinit.exe" and process.parent.name : "winlogon.exe"]
  [process where event.type == "start" and process.name : "explorer.exe"]
  [process where event.type == "start" and process.parent.name : "explorer.exe" and
   /* add suspicious programs here */
   process.pe.original_file_name in ("cscript.exe",
                                     "wscript.exe",
                                     "PowerShell.EXE",
                                     "MSHTA.EXE",
                                     "RUNDLL32.EXE",
                                     "REGSVR32.EXE",
                                     "RegAsm.exe",
                                     "MSBuild.exe",
                                     "InstallUtil.exe") and
    /* add potential suspicious paths here */
    process.args : ("C:\\Users\\*", "C:\\ProgramData\\*", "C:\\Windows\\Temp\\*", "C:\\Windows\\Tasks\\*", "C:\\PerfLogs\\*", "C:\\Intel\\*")
   ]

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
Technique:
- Name: Boot or Logon Autostart Execution
- ID: T1547
- Reference URL: https://attack.mitre.org/techniques/T1547/
Sub-technique:
- Name: Registry Run Keys / Startup Folder
- ID: T1547.001
- Reference URL: https://attack.mitre.org/techniques/T1547/001/

« Startup or Run Key Registry Modification A scheduled task was created »