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Remote Access Tool - Potential MeshAgent Execution - Windows — Sigma Rule

Sigma rule 2fbbe9ff-0afc-470b-bdc0-592198339968. Remote Access Tool - Potential MeshAgent Execution - Windows — Sigma Rule. Detects potential execution of MeshAgent which is a tool used for remote access. Historical data shows that threat actors rename MeshAgent binary to evade detection. Matching command lines with the '--meshServiceName' argument can indicate that the MeshAgent is being used for remote access.

Rule metadata and linked tags

experimentalmediumprocess_creationwindowsattack.command-and-controlattack.t1219.002

Author: Norbert Jaśniewicz (AlphaSOC). Source status: experimental; severity: medium. Source dates: 2025-05-19 / not supplied.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: dd5f3f9aacd9d5855bc59fb7d4e1a13d73a71805cca2a2c8184de6d3262a6eb2

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: Remote Access Tool - Potential MeshAgent Execution - Windows
id: 2fbbe9ff-0afc-470b-bdc0-592198339968
related:
    - id: 22c45af6-f590-4d44-bab3-b5b2d2a2b6d9
      type: similar
status: experimental
description: |
    Detects potential execution of MeshAgent which is a tool used for remote access.
    Historical data shows that threat actors rename MeshAgent binary to evade detection.
    Matching command lines with the '--meshServiceName' argument can indicate that the MeshAgent is being used for remote access.
references:
    - https://www.huntress.com/blog/know-thy-enemy-a-novel-november-case-on-persistent-remote-access
    - https://thecyberexpress.com/ukraine-hit-by-meshagent-malware-campaign/
    - https://wazuh.com/blog/how-to-detect-meshagent-with-wazuh/
    - https://www.security.com/threat-intelligence/medusa-ransomware-attacks
author: Norbert Jaśniewicz (AlphaSOC)
date: 2025-05-19
tags:
    - attack.command-and-control
    - attack.t1219.002
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains: '--meshServiceName'
    condition: selection
falsepositives:
    - Environments that legitimately use MeshAgent
level: medium

Original YAML and metadata in JSON

False positives

  • Environments that legitimately use MeshAgent

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.