BIOCs

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

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2 BIOCs match the current filters. tactic: TA0003 ✕ technique: T1136 ✕

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  • Account creation via command-line tool Informational Persistence

    The useradd/adduser command could be used to create user accounts or to add users to existing groups.

    Indicator:

    Process action type = execution AND target process name = useradd , adduser

    ATT&CK tactics: Persistence (TA0003)
    ATT&CK techniques: Create Account (T1136)
    Preventable:
    Yes
    Source:
    Palo Alto Networks
    Updated:
    2026-02-11
  • User creation or modification via /etc file Informational Persistence

    Attackers may create new users or modify existing users by directly modifying /etc/passwd and /etc/shadow.

    Indicator:

    File file path = /etc/shadow , /etc/passwd AND action type = write

    ATT&CK tactics: Persistence (TA0003)
    ATT&CK techniques: Create Account (T1136)
    Preventable:
    Yes
    Source:
    Palo Alto Networks
    Updated:
    2026-02-11