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Suspicious PDF Reader Child Process
editSuspicious PDF Reader Child Process
editIdentifies suspicious child processes of PDF reader applications. These child processes are often launched via exploitation of PDF applications or social engineering.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
Severity: low
Risk score: 21
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Execution
Version: 7 (version history)
Added (Elastic Stack release): 7.7.0
Last modified (Elastic Stack release): 7.13.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule query
editprocess where event.type in ("start", "process_started") and
process.parent.name : ("AcroRd32.exe",
"Acrobat.exe", "FoxitPhantomPDF.exe",
"FoxitReader.exe") and process.name : ("arp.exe", "dsquery.exe",
"dsget.exe", "gpresult.exe", "hostname.exe", "ipconfig.exe",
"nbtstat.exe", "net.exe", "net1.exe", "netsh.exe",
"netstat.exe", "nltest.exe", "ping.exe", "qprocess.exe",
"quser.exe", "qwinsta.exe", "reg.exe", "sc.exe", "systeminfo.exe",
"tasklist.exe", "tracert.exe", "whoami.exe",
"bginfo.exe", "cdb.exe", "cmstp.exe", "csi.exe", "dnx.exe", "fsi.exe",
"ieexec.exe", "iexpress.exe", "installutil.exe",
"Microsoft.Workflow.Compiler.exe", "msbuild.exe", "mshta.exe",
"msxsl.exe", "odbcconf.exe", "rcsi.exe", "regsvr32.exe",
"xwizard.exe", "atbroker.exe", "forfiles.exe",
"schtasks.exe", "regasm.exe", "regsvcs.exe", "cmd.exe", "cscript.exe",
"powershell.exe", "pwsh.exe", "wmic.exe", "wscript.exe",
"bitsadmin.exe", "certutil.exe", "ftp.exe")
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Technique:
- Name: User Execution
- ID: T1204
- Reference URL: https://attack.mitre.org/techniques/T1204/
Rule version history
edit- Version 7 (7.13.0 release)
-
-
Updated query, changed from:
event.category:process and event.type:(start or process_started) and process.parent.name:(AcroRd32.exe or Acrobat.exe or FoxitPhantomPDF.exe or FoxitReader.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)
-
- Version 6 (7.12.0 release)
-
- Formatting only
- Version 5 (7.11.2 release)
-
- Formatting only
- Version 4 (7.10.0 release)
-
- Formatting only
- Version 3 (7.9.1 release)
-
- Formatting only
- Version 2 (7.9.0 release)
-
-
Updated query, changed from:
event.action:"Process Create (rule: ProcessCreate)" and process.parent.name:(AcroRd32.exe or Acrobat.exe or FoxitPhantomPDF.exe or FoxitReader.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)
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