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Elastic Docs ›SIEM Guide [7.6] ›Detections (Beta) ›Prebuilt rule reference

Suspicious MS Office Child Process

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Suspicious MS Office Child Process

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Identifies suspicious child processes of frequently targeted Microsoft Office applications (Word, PowerPoint, Excel). These child processes are often launched during exploitation of Office applications or from documents with malicious macros.

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

Rule version: 1

Added (Elastic Stack release): 7.6.0

Rule query

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event.action:"Process Create (rule: ProcessCreate)" and
process.parent.name:("winword.exe" or "excel.exe" or "powerpnt.exe" or
"eqnedt32.exe" or "fltldr.exe" or "mspub.exe" or "msaccess.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")

Threat mapping

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Framework: MITRE ATT&CKTM

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