Detectionhightest

Potential PowerShell Obfuscation Via WCHAR/CHAR

Detects suspicious encoded character syntax often used for defense evasion

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Florian Roth (Nextron Systems)Created Thu Jul 09Updated Mon Mar 03e312efd0-35a1-407f-8439-b8d434b438a6windows

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|contains:
            - '[char]0x'
            - '(WCHAR)0x'
    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

e312efd0-35a1-407f-8439-b8d434b438a6

Status

test

Level

high

Type

Detection

Created

Thu Jul 09

Modified

Mon Mar 03

Author

Path

rules/windows/process_creation/proc_creation_win_powershell_obfuscation_via_utf8.yml

Raw Tags

attack.executionattack.t1059.001attack.defense-evasionattack.t1027