Detection rules › Sigma

Remote Access Tool - Cmd.EXE Execution via AnyViewer

Status
test
Severity
medium
Log source
category process_creation, product windows
Author
@kostastsale
Source
github.com/SigmaHQ/sigma

Detects execution of "cmd.exe" via the AnyViewer RMM agent on a remote management sessions.

Known false positives

  • Legitimate use for admin activity.

MITRE ATT&CK coverage

TacticTechniques
ExecutionNo specific technique
PersistenceNo specific technique

Telemetry coverage

ProviderRecord / event type
SysmonEvent ID 1: Process creation

Rule body

title: Remote Access Tool - Cmd.EXE Execution via AnyViewer
id: bc533330-fc29-44c0-b245-7dc6e5939c87
status: test
description: |
    Detects execution of "cmd.exe" via the AnyViewer RMM agent on a remote management sessions.
references:
    - https://www.anyviewer.com/help/remote-technical-support.html
author: '@kostastsale'
date: 2024-08-03
tags:
    - attack.execution
    - attack.persistence
    - detection.threat-hunting
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\AVCore.exe'
        ParentCommandLine|contains: 'AVCore.exe" -d'
        Image|endswith: '\cmd.exe'
    condition: selection
falsepositives:
    - Legitimate use for admin activity.
level: medium

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    ParentImage|endswith: '\AVCore.exe'
    ParentCommandLine|contains: 'AVCore.exe" -d'
    Image|endswith: '\cmd.exe'

Indicators

These rows show field, operator, and value matches.