Atera Agent Installation — Sigma Rule

Rule metadata and linked tags

Author: Bhabesh Raj. Source status: test; severity: high. Source dates: 2021-09-01 / 2022-12-25.

{
  "service": "application",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 68edc9c57bc5e7afe9f81f99700cf73e8e07b42b67edc7d469fff2f01ff785de

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: Atera Agent Installation
id: 87261fb2-69d0-42fe-b9de-88c6b5f65a43
status: test
description: Detects successful installation of Atera Remote Monitoring & Management (RMM) agent as recently found to be used by Conti operators
references:
    - https://www.advintel.io/post/secret-backdoor-behind-conti-ransomware-operation-introducing-atera-agent
author: Bhabesh Raj
date: 2021-09-01
modified: 2022-12-25
tags:
    - attack.command-and-control
    - attack.t1219.002
logsource:
    service: application
    product: windows
detection:
    selection:
        EventID: 1033
        Provider_Name: MsiInstaller
        Message|contains: AteraAgent
    condition: selection
falsepositives:
    - Legitimate Atera agent installation
level: high

Original YAML and metadata in JSON

False positives

• Legitimate Atera agent installation

Source references

• https://www.advintel.io/post/secret-backdoor-behind-conti-ransomware-operation-introducing-atera-agent