BIOCs

Browse the Cortex behavioral indicator of compromise (BIOC) detection rules.

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2 BIOCs match the current filters. technique: T1505 ✕

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  • Possible web shell command execution Informational Persistence XQL

    Possible command execution via a web shell for reconnaissance.

    XQL query:
    {"stages":[{"FILTER":{"filter":{"AND":[{"AND":[{"LEFT":"$event_type","OPERATOR":"EQ","RIGHT":"$PROCESS","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"},{"OR":[{"LEFT":"$actor_process_image_name","OPERATOR":"IN","RIGHT":["w3wp.exe","httpd.exe","php-cgi.exe","nginx.exe","tomcat.exe"],"FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]}]},{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"OR":[{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"nslookup","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"whoami","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":" hostname","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":" arp ","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":" net ","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"qwinsta","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"netstat","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"quser","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":" powershell","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"tasklist","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"ipconfig","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"ping","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"certutil","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"rundll32","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"vssadmin","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"tracert","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"systeminfo","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]},{"LEFT":"$action_process_image_command_line","OPERATOR":"CONTAINS","RIGHT":"netsh","FILTER_DIALECT":"EXTENDED_FILTER_OBJ"}]}]}}}],"original_query":null,"tables":["xdr_data"]}
    ATT&CK tactics: Persistence (TA0003)
    ATT&CK techniques: Server Software Component: Web Shell (T1505.003)
    Preventable:
    Yes
    Source:
    Palo Alto Networks
    Updated:
    2026-02-17
  • Potential web shell installation Informational Persistence

    A web-app script file was installed on a web server. This can indicate an installation of web shell.

    Indicator:

    File action type = create , write AND file path = /var/www/html/*.php , /var/www/html/*.asp , /var/www/html/*.aspx , /var/www/html/*.cfm , /var/www/html/*.jsp , /var/www/html/*.pl

    ATT&CK tactics: Persistence (TA0003)
    ATT&CK techniques: Server Software Component: Web Shell (T1505.003)
    Preventable:
    Yes
    Source:
    Palo Alto Networks
    Updated:
    2026-08-23