Elastic Defend high stable eql
Suspicious Windows Command Shell Execution
Identifies the execution of the Windows Command Shell process (cmd.exe) with suspicious argument values. This behavior is often observed during malware installation.
Detection Logic
process where event.action == "start" and
(process.name : "cmd.exe" or process.pe.original_file_name == "Cmd.Exe") and not user.id : "S-1-5-18" and
process.parent.executable != null and
(
process.command_line : ("*).Run(*", "*GetObject*", "* curl*regsvr32*", "*echo*wscript*", "*echo*ZONE.identifier*",
"*ActiveXObject*", "*dir /s /b *echo*", "*unescape(*", "*findstr*TVNDRgAAAA*", "*findstr*passw*", "*start*\\\\*\\DavWWWRoot\\*",
"* explorer*%CD%*", "*%cd%\\*.js*", "*attrib*%CD%*", "*/?cMD<*", "*/AutoIt3ExecuteScript*..*", "*&cls&cls&cls&cls&cls&*",
"*&#*;&#*;&#*;&#*;*", "* &&s^eT*", "*& ChrW(*", "*&explorer /root*", "*start __ & __\\*", "*findstr /V /L *forfiles*",
"*=wscri& set *", "*http*!COmpUternaME!*", "*start *.pdf * start /min cmd.exe /c *\\\\*", "*pip install*System.Net.WebClient*",
"*Invoke-WebRequest*Start-Process*", "*iwr *saps *", "*-command (Invoke-webrequest*", "*copy /b *\\\\* ping *-n*", "*echo*.ToCharArray*",
"*curl --ntlm -u*", "*bat'; iwr $*", "*http*.Content;*", "*&(gcm i?x)*", "*!*!*!*!*!*!*", "*&& !*!!*", "*for %? in (?) do @set*",
"*QUIT>>?&FTP/s:*", "*iwr *Start-Process*", "*irm https*
| iex*", "*^S^T^a*", "*javascript:alert*",
"* /v /c *&&set *&&set *&&set *&&set *&&set*", "*net use *@ssl*rundll32*", "*echo F
| xcopy*/h /y &&*",
"* if /i \"%cd%\"==\"C:\\Windows\\System32\" ( echo *", "* if /i \"%cd%\"==\"C:\\Windows\\System32\" ( msg*",
"* if /i \"%cd%\"==\"C:\\Windows\\System32\" (mshta *", "*/c*start*.doc&exit*", "*/k*start msedge*http*&*", "*))
| Invoke-Expression\"",
"*/c *.bat&*.pdf*", "*/c *.bat&*.mp4*", "*set \"*& set \"*& set \"* call %*") or
(process.args_count == 3 and process.args : "%*%" and process.args:"/c") or
process.args : ("1>?:\\*.vbs", "1>?:\\*.js") or
(process.args : "explorer.exe" and process.args : "type" and process.args : ">" and process.args : "start") or
(process.parent.name : ("explorer.exe", "python.exe") and
process.command_line :
("*&&S^eT *",
"*&& set *&& set *&& set *&& set *&& set *&& call*",
"**\\u00??\\u00??\\u00??\\u00??\\u00??\\u00??\\u00??\\u00??*",
"*sTArT /MiN *POWeRsheLl -WiNdowStYlE hIddeN*",
"*cURL -O *HtTP*.bat*")) or
(process.parent.name : ("explorer.exe", "python.exe") and process.args : "copy" and
process.args : "&&" and process.args : "\\\\*@*\\*")
) and
/* false positives */
not (process.args : "%TEMP%\\Spiceworks\\*" and process.parent.name : "wmiprvse.exe") and
not (process.parent.name : "cmd.exe" and process.command_line : "*!iodp.wapps!PitaLogger*") and
not process.working_directory like "C:\\Jenkins\\_Workspace\\*" and
not process.parent.executable :
("?:\\Perl64\\bin\\perl.exe",
"?:\\Program Files\\nodejs\\node.exe",
"E:\\eGov\\eGovXtract.exe",
"?:\\Program Files\\HP\\RS\\pgsql\\bin\\pg_dumpall.exe",
"?:\\Program Files (x86)\\PRTG Network Monitor\\64 bit\\PRTG Server.exe",
"?:\\Program Files (x86)\\Spiceworks\\bin\\spiceworks-finder.exe",
"?:\\Program Files (x86)\\Zuercher Suite\\production\\leds\\leds.exe",
"?:\\Program Files\\Tripwire\\Agent\\Plugins\\twexec\\twexec.exe",
"D:\\Agents\\?\\_work\\_tasks\\*\\SonarScanner.MSBuild.exe",
"?:\\reps\\inventory\\.nodejs\\node\\node.exe",
"?:\\Program Files\\Microsoft VS Code\\Code.exe",
"?:\\Users\\*\\node.exe",
"?:\\nodejs\\node.exe",
"?:\\*\\.nodejs\\node\\node.exe",
"C:\\xampp\\php\\php.exe",
"C:\\officelauncher\\OfficeInstaller.exe",
"C:\\Program Files (x86)\\mRemoteNG\\mRemoteNG.exe",
"D:\\PROGRAMS\\Siebel\\siebsrvr\\BIN\\siebmtshmw.exe",
"C:\\Program Files (x86)\\NetDocuments\\ndOffice\\ndOffice.exe",
"C:\\Program Files\\Waves Central\\Waves Central.exe",
"C:\\Users\\*\\AppData\\Local\\MyASUS Update Messenger\\UpdateMessenger.exe",
"C:\\Program Files\\Microsoft SQL Server\\MSSQL??.MSSQLSERVER\\MSSQL\\Binn\\sqlservr.exe",
"?:\\programmiweb\\NetBeans-*\\netbeans\\bin\\netbeans64.exe",
"?:\\Users\\*\\AppData\\Local\\Zuercher Suite\\production\\leds\\leds.exe",
"?:\\Program Files (x86)\\Public Safety Suite Professional\\production\\leds\\leds.exe",
"?:\\Program Files (x86)\\Tier2Tickets\\button_gui.exe",
"?:\\Program Files\\NetBeans-*\\netbeans\\bin\\netbeans*.exe",
"C:\\Program Files (x86)\\Microsoft Visual Studio\\20??\\Enterprise\\Common?\\IDE\\devenv.exe",
"?:\\Program Files (x86)\\Helpdesk Button\\button_gui.exe",
"?:\\VTSPortable\\VTS\\jre\\bin\\javaw.exe",
"?:\\Program Files\\Bot Framework Composer\\Bot Framework Composer.exe",
"?:\\Users\\*\\AppData\\Local\\Programs\\*electron\\AXIS Device Manager Extend.exe",
"?:\\Users\\*\\AppData\\Local\\Programs\\Arduino IDE\\Arduino IDE.exe",
"?:\\Program Files\\KMSYS Worldwide\\eQuate\\*\\SessionMgr.exe",
"?:\\Program Files (x86)\\Craneware\\Pricing Analyzer\\Craneware.Pricing.Shell.exe",
"?:\\sonarqube\\MSBuild\\SonarScanner.MSBuild.exe",
"?:\\Program Files (x86)\\jumpcloud-agent-app\\jumpcloud-agent-app.exe",
"?:\\Program Files\\PostgreSQL\\*\\bin\\pg_dumpall.exe",
"?:\\Users\\*\\AppData\\Local\\Programs\\Microsoft VS Code\\Code.exe",
"?:\\Program Files\\Microsoft SQL Server\\*\\DTS\\Binn\\ISServerExec.exe",
"?:\\Program Files\\Microsoft SQL Server\\MSSQL*\\MSSQL\\Binn\\sqlservr.exe",
"?:\\Program Files (x86)\\Microsoft Visual Studio\\*\\IDE\\devenv.exe",
"C:\\Program Files\\Microsoft Visual Studio\\*\\Common?\\IDE\\devenv.exe",
"?:\\Program Files (x86)\\Vim\\vim*\\vimrun.exe",
"C:\\Program Files\\NetBeans-28\\bin\\netbeans64.exe",
"C:\\Program Files\\Microsoft Visual Studio\\*\\DtsDebugHost.exe",
"C:\\Program Files (x86)\\Microsoft Visual Studio\\*\\DtsDebugHost.exe",
"C:\\Program Files (x86)\\Quest Software\\*\\Toad.exe",
"?:\\Program Files\\Microsoft SQL Server\\*\\DTS\\Binn\\ISServerExec.exe") and
not (process.args : "console
| findstr" and process.parent.name : "cmd.exe") and
not process.working_directory : "?:\\Program Files (x86)\\Spiceworks\\" and
not (process.parent.name : "wscript.exe" and
process.parent.args : ("D:\\intersystems\\hsfoundation\\databases\\data\\ELSAInfoServer.vbs", "\\\\*")) and
not (process.parent.name : ("pwsh.exe", "powershell.exe") and process.args : "start" and
process.args : "https://login.microsoftonline.com/*") and
not (process.args : "?:\\Program Files\\Citrix\\Secure Access Client\\nsauto.exe" and process.parent.name : "userinit.exe") and
not process.args :
("?:\\Program Files (x86)\\PCMatic\\PCPitstopScheduleService.exe",
"?:\\Program Files (x86)\\AllesTechnologyAgent\\*",
"https://auth.axis.com/oauth2/oauth-authorize*",
"D:\\GitHub\\lilitech-cloud-app\\node_modules\\.bin\\*",
"C:\\ProgramData\\santesocial\\commun\\adm\\produits",
"*--flat-playlist^*--no-cache-dir^*",
"/DIR=C:\\Program Files (x86)\\Zeiss\\Zeiss PDF Printer",
"*plugins\\org.eclipse.birt.doc_*",
"database.*password",
"usebackq delims=: tokens=2") and
not process.command_line :
("\"cmd\" /c %NETBEANS_MAVEN_COMMAND_LINE%",
"cmd /c %NETBEANS_MAVEN_COMMAND_LINE%",
"/c echo %TERM%",
"*RunAsync.vbs*",
"?:\\Windows\\system32\\cmd.exe /q /d /s /c \"npm.cmd ^\"install^\" ^\"--no-bin-links^\" ^\"--production^\"\"") and
not (process.name : "cmd.exe" and process.args : "%TEMP%\\Spiceworks\\*" and process.args : "http*/dataloader/persist_netstat_data") and
not process.parent.command_line : "cmd /q /k prompt MAM:Remote$G" and
not process.parent.args like "C:\\WINDOWS\\Runtime\\utility\\wrapper.vbs" and
not (process.args : "C:\\Windows\\TEMP\\nessus_*.TMP" and process.parent.name : "WmiPrvSE.exe") and
not (process.parent.name : "WmiPrvSe.exe" and
process.args : "& {$j = sajb {$ErrorActionPreference = 'SilentlyContinue';$ErrorActionPreference = 'SilentlyContinue';$jars = $(Get-ChildItem -Path 'C:\\*' -Recurse -Include '*.jar','*.war','*.ear'*") and
not (process.parent.name : "wscript.exe" and
process.parent.args : ("C:\\IBM\\ITM\\TMAITM6_x64\\K06_uninstall.vbs",
"C:\\Windows\\System32\\gatherNetworkInfo.vbs",
"C:\\Program Files\\Arcserve\\Unified Data Protection\\Engine\\BIN\\AStartupRun.vbs")) and
not (process.args == "echo" and process.args == "GEQ" and process.args == "1073741824") and
not (process.parent.name : "wscript.exe" and process.parent.args : "C:\\Program Files (x86)\\CaseWare\\Template\\FinancialsIFRS\\Packager\\After\\0\\FinancialsIFRSCreateShortcuts.js") and
not (process.name : "cmd.exe" and process.parent.name : ("javaw.exe", "udt.exe") and
process.command_line : ("cmd /C %JENV_0%", "/c echo %MENU_SYSTEM%", "/c echo %NJSEXIT7%", "%OPENER% %f%")) and
not (process.parent.executable : "C:\\Users\\*\\AppData\\Local\\Temp\\is-*.tmp\\RublonForWindows-?.?.?.tmp" and
process.command_line : "*https://core.rublon.net/api/app/init*") and
not process.command_line : ("cmd /c echo AMD64", "cmd /c echo x86", "C:\\Windows\\system32\\cmd.exe /c mshta \"javascript:code(close(new ActiveXObject('Scripting.FileSystemObject').GetStandardStream(1).Write*") Field Validations
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