Detection rules › Sigma
Shell Context Menu Command Tampering
Detects changes to shell context menu commands. Use this rule to hunt for potential anomalies and suspicious shell commands.
Known false positives
- Likely from new software installation suggesting to add context menu items. Such as "PowerShell", "Everything", "Git", etc.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | No specific technique |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 13: RegistryEvent (Value Set) |
Rule body
title: Shell Context Menu Command Tampering
id: 868df2d1-0939-4562-83a7-27408c4a1ada
status: test
description: Detects changes to shell context menu commands. Use this rule to hunt for potential anomalies and suspicious shell commands.
references:
- https://mrd0x.com/sentinelone-persistence-via-menu-context/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2024-03-06
tags:
- attack.persistence
- detection.threat-hunting
logsource:
category: registry_set
product: windows
detection:
selection:
TargetObject|contains|all:
- '\Software\Classes\'
- '\shell\'
- '\command\'
condition: selection
falsepositives:
- Likely from new software installation suggesting to add context menu items. Such as "PowerShell", "Everything", "Git", etc.
level: low
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
TargetObject|contains|all:
- '\Software\Classes\'
- '\shell\'
- '\command\'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
TargetObject | match |
| field:"TargetObject" kind:match |