windows(opens in a new tab or window)
system(opens in a new tab or window)
process where host.os.type == "windows" and event.type == "start" and
process.name : "cmd.exe" 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-WebReques*Start-Process*", "*-command (Invoke-webrequest*", "*copy /b *\\\\* ping *-n*", "*echo*.ToCharArray*") or
(process.args : "echo" and process.parent.name : ("wscript.exe", "mshta.exe")) 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" and
process.command_line :
("*&&S^eT *",
"*&& set *&& set *&& set *&& set *&& set *&& call*",
"**\\u00??\\u00??\\u00??\\u00??\\u00??\\u00??\\u00??\\u00??*")) or
(process.parent.name : "explorer.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.executable :
("?:\\Perl64\\bin\\perl.exe",
"?:\\Program Files\\nodejs\\node.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",
"?:\\Program Files\\Microsoft VS Code\\Code.exe",
"?:\\programmiweb\\NetBeans-*\\netbeans\\bin\\netbeans64.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",
"?:\\Program Files (x86)\\Public Safety Suite Professional\\production\\leds\\leds.exe",
"?:\\Program Files (x86)\\Tier2Tickets\\button_gui.exe",
"?:\\Program Files (x86)\\Helpdesk Button\\button_gui.exe",
"?:\\VTSPortable\\VTS\\jre\\bin\\javaw.exe",
"?:\\Program Files\\Bot Framework Composer\\Bot Framework Composer.exe",
"?:\\Program Files\\KMSYS Worldwide\\eQuate\\*\\SessionMgr.exe",
"?:\\Program Files (x86)\\Craneware\\Pricing Analyzer\\Craneware.Pricing.Shell.exe",
"?:\\Program Files (x86)\\jumpcloud-agent-app\\jumpcloud-agent-app.exe",
"?:\\Program Files\\PostgreSQL\\*\\bin\\pg_dumpall.exe",
"?:\\Program Files (x86)\\Vim\\vim*\\vimrun.exe") 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*") and
not process.command_line :
("\"cmd\" /c %NETBEANS_MAVEN_COMMAND_LINE%",
"?:\\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.args == "echo" and process.args == "GEQ" and process.args == "1073741824")
Install detection rules in Elastic Security
Detect Suspicious Windows Command Shell Arguments in the Elastic Security detection engine by installing this rule into your Elastic Stack.
To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).