Detectionhightest

Invoke-Obfuscation Via Stdin

Detects Obfuscated Powershell via Stdin in Scripts

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Nikita Nazarov, oscd.communityCreated Mon Oct 12Updated Tue Apr 169c14c9fa-1a63-4a64-8e57-d19280559490windows

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic

detection:
    selection:
        CommandLine|re: '(?i)(set).*&&\s?set.*(environment|invoke|\$\{?input).*&&.*"'
    condition: selection

False Positives

Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References

MITRE ATT&CK

Tactics

Techniques

Sub-techniques

Rule Metadata

Rule ID

9c14c9fa-1a63-4a64-8e57-d19280559490

Status

test

Level

high

Type

Detection

Created

Mon Oct 12

Modified

Tue Apr 16

Author

Path

rules/windows/process_creation/proc_creation_win_hktl_invoke_obfuscation_via_stdin.yml

Raw Tags

attack.defense-evasionattack.t1027attack.executionattack.t1059.001