BIOCs

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

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2 BIOCs match the current filters. technique: T1078 ✕

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  • PsExec runs with System privileges Informational Privilege Escalation

    PsExec.exe is a Windows administrative tool, it can be used to elevate privileges and run other processes with NT/System privilege level.

    Indicator:

    Process action type = execution AND target process cmd = * -s* AND target process name = psexec.exe

    ATT&CK tactics: Privilege Escalation (TA0004)
    ATT&CK techniques: Valid Accounts (T1078)
    Preventable:
    Yes
    Source:
    Palo Alto Networks
    Updated:
    2026-02-11
  • User account flagged as hidden Informational Evasion

    Look for unsigned processes that add an entry to the hidden users Registry key.

    Indicator:

    Registry action type = all AND registry data = 0 AND registry key name = *SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList Host host os = windows

    ATT&CK tactics: Defense Evasion (TA0005)
    ATT&CK techniques: Valid Accounts (T1078)
    Preventable:
    Yes
    Source:
    Palo Alto Networks
    Updated:
    2026-02-11