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Detection rules › Sigma

Atera Agent Installation

Status
test
Severity
high
Log source
product windows, service application
Author
Bhabesh Raj
Source
github.com/SigmaHQ/sigma

Detects successful installation of Atera Remote Monitoring & Management (RMM) agent as recently found to be used by Conti operators

Known false positives

  • Legitimate Atera agent installation

MITRE ATT&CK coverage

TacticTechniques
Command & Control

Telemetry coverage

ProviderRecord / event type
MsiInstallerEvent ID 1033: Windows Installer installed the product.

Rule body

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

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    EventID: 1033
    Provider_Name: MsiInstaller
    Message|contains: AteraAgent

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
Messagematch
  • AteraAgent
field:"Message" kind:match value:"AteraAgent"
Provider_Nameeq
  • MsiInstaller corpus 5 (sigma 5)
field:"Provider_Name" kind:eq value:"MsiInstaller"