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Disable Powershell Command History — Sigma Rule

Sigma rule 602f5669-6927-4688-84db-0d4b7afb2150. Disable Powershell Command History — Sigma Rule. Detects scripts or commands that disabled the Powershell command history by removing psreadline module

Rule metadata and linked tags

testhighwindowsps_scriptattack.stealthattack.t1070.003

Author: Ali Alwashali. Source status: test; severity: high. Source dates: 2022-08-21 / not supplied.

{
  "product": "windows",
  "category": "ps_script",
  "definition": "Requirements: Script Block Logging must be enabled"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: ae6120323224966c232f0b83a5b1cd078f6669ddfe289230b5e954f40f2f0762

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Disable Powershell Command History
id: 602f5669-6927-4688-84db-0d4b7afb2150
status: test
description: Detects scripts or commands that disabled the Powershell command history by removing psreadline module
references:
    - https://twitter.com/DissectMalware/status/1062879286749773824
author: Ali Alwashali
date: 2022-08-21
tags:
    - attack.stealth
    - attack.t1070.003
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains|all:
            - Remove-Module
            - psreadline
    condition: selection
falsepositives:
    - Legitimate script that disables the command history
level: high

Original YAML and metadata in JSON

False positives

  • Legitimate script that disables the command history

Source references

Connected ecosystem references

Exact source-tagged techniques

Telemetry review

Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.

Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.