Detection rules › Sigma
Potential Linux Amazon SSM Agent Hijacking
Detects potential Amazon SSM agent hijack attempts as outlined in the Mitiga research report.
Known false positives
- Legitimate activity of system administrators
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Command & Control |
Telemetry coverage
| Platform | Record / event type |
|---|---|
| Linux | Event ID 1: Process Create |
Rule body
title: Potential Linux Amazon SSM Agent Hijacking
id: f9b3edc5-3322-4fc7-8aa3-245d646cc4b7
status: test
description: Detects potential Amazon SSM agent hijack attempts as outlined in the Mitiga research report.
references:
- https://www.mitiga.io/blog/mitiga-security-advisory-abusing-the-ssm-agent-as-a-remote-access-trojan
- https://www.bleepingcomputer.com/news/security/amazons-aws-ssm-agent-can-be-used-as-post-exploitation-rat-malware/
- https://www.helpnetsecurity.com/2023/08/02/aws-instances-attackers-access/
author: Muhammad Faisal
date: 2023-08-03
tags:
- attack.command-and-control
- attack.persistence
- attack.t1219.002
logsource:
category: process_creation
product: linux
detection:
selection:
Image|endswith: '/amazon-ssm-agent'
CommandLine|contains|all:
- '-register '
- '-code '
- '-id '
- '-region '
condition: selection
falsepositives:
- Legitimate activity of system administrators
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '/amazon-ssm-agent'
CommandLine|contains|all:
- '-register '
- '-code '
- '-id '
- '-region '
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |
Image | ends_with |
| field:"Image" kind:ends_with value:"/amazon-ssm-agent" |