The SIEM app is now a part of the Elastic Security solution.
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IMPORTANT: No additional bug fixes or documentation updates will be released for this version.
IMPORTANT: No additional bug fixes or documentation updates will be released for this version.
Suspicious MS Outlook Child Process
editSuspicious MS Outlook Child Process
editIdentifies suspicious child processes of Microsoft Outlook. These child processes are often associated with spear phishing activity.
Rule type: query
Rule indices:
- winlogbeat-*
Severity: low
Risk score: 21
Runs every: 5 minutes
Searches indices from: now-6m (Date Math format, see also Additional look-back time)
Maximum signals per execution: 100
Tags:
- Elastic
- Windows
Version: 2 (version history)
Added (Elastic Stack release): 7.6.0
Last modified (Elastic Stack release): 7.7.0
Rule query
editevent.action:"Process Create (rule: ProcessCreate)" and process.parent.name:outlook.exe and process.name:(Microsoft.Workflow.Compiler.exe or arp.exe or atbroker.exe or bginfo.exe or bitsadmin.exe or cdb.exe or certutil.exe or cmd.exe or cmstp.exe or cscript.exe or csi.exe or dnx.exe or dsget.exe or dsquery.exe or forfiles.exe or fsi.exe or ftp.exe or gpresult.exe or hostname.exe or ieexec.exe or iexpress.exe or installutil.exe or ipconfig.exe or mshta.exe or msxsl.exe or nbtstat.exe or net.exe or net1.exe or netsh.exe or netstat.exe or nltest.exe or odbcconf.exe or ping.exe or powershell.exe or pwsh.exe or qprocess.exe or quser.exe or qwinsta.exe or rcsi.exe or reg.exe or regasm.exe or regsvcs.exe or regsvr32.exe or sc.exe or schtasks.exe or systeminfo.exe or tasklist.exe or tracert.exe or whoami.exe or wmic.exe or wscript.exe or xwizard.exe)
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Technique:
- Name: Spearphishing Attachment
- ID: T1193
- Reference URL: https://attack.mitre.org/techniques/T1193/
Rule version history
edit- Version 2 (7.7.0 release)
-
Updated query, changed from:
event.action:"Process Create (rule: ProcessCreate)" and process.parent.name:"outlook.exe" and process.name:("arp.exe" or "dsquery.exe" or "dsget.exe" or "gpresult.exe" or "hostname.exe" or "ipconfig.exe" or "nbtstat.exe" or "net.exe" or "net1.exe" or "netsh.exe" or "netstat.exe" or "nltest.exe" or "ping.exe" or "qprocess.exe" or "quser.exe" or "qwinsta.exe" or "reg.exe" or "sc.exe" or "systeminfo.exe" or "tasklist.exe" or "tracert.exe" or "whoami.exe" or "bginfo.exe" or "cdb.exe" or "cmstp.exe" or "csi.exe" or "dnx.exe" or "fsi.exe" or "ieexec.exe" or "iexpress.exe" or "installutil.exe" or "Microsoft.Workflow.Compiler.exe" or "msbuild.exe" or "mshta.exe" or "msxsl.exe" or "odbcconf.exe" or "rcsi.exe" or "regsvr32.exe" or "xwizard.exe" or "atbroker.exe" or "forfiles.exe" or "schtasks.exe" or "regasm.exe" or "regsvcs.exe" or "cmd.exe" or "cscript.exe" or "powershell.exe" or "pwsh.exe" or "wmic.exe" or "wscript.exe" or "bitsadmin.exe" or "certutil.exe" or "ftp.exe")