Detection rules › Sigma
Sign-In From Malware Infected IP
Indicates sign-ins from IP addresses infected with malware that is known to actively communicate with a bot server.
Known false positives
- Using an IP address that is shared by many users
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Command & Control |
Rule body
title: Sign-In From Malware Infected IP
id: 821b4dc3-1295-41e7-b157-39ab212dd6bd
status: test
description: Indicates sign-ins from IP addresses infected with malware that is known to actively communicate with a bot server.
references:
- https://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#malware-linked-ip-address-deprecated
- https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins
author: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'
date: 2023-09-03
tags:
- attack.t1090
- attack.command-and-control
logsource:
product: azure
service: riskdetection
detection:
selection:
riskEventType: 'malwareInfectedIPAddress'
condition: selection
falsepositives:
- Using an IP address that is shared by many users
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
riskEventType: 'malwareInfectedIPAddress'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
riskEventType | eq |
| field:"azure_ad::risk_event_types" kind:eq value:"malwareInfectedIPAddress" |