Sigma rule: Sign-In From Malware Infected IP

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-5ea701f1e236, updated 2023-09-03T00:00:00.000Z.

Rule

Title
Sign-In From Malware Infected IP
Status
test
Level
high
Author
Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'
Date
2023-09-03
File
rules/cloud/azure/identity_protection/azure_identity_protection_malware_linked_ip.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Indicates sign-ins from IP addresses infected with malware that is known to actively communicate with a bot server.

Log source

product
azure
service
riskdetection

Detection

selection:
    riskEventType: 'malwareInfectedIPAddress'
condition: selection

False positives (as the rule lists them)

  • Using an IP address that is shared by many users

Tags

  • attack.t1090
  • attack.command-and-control

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/azure/identity_protection/azure_identity_protection_malware_linked_ip.yml

Sources and licences

  • SigmaHQ

    "Sign-In From Malware Infected IP" by Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo' (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/azure/identity_protection/azure_identity_protection_malware_linked_ip.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Sign-In From Malware Infected IP",
entity page, dataset version ref-5ea701f1e236, updated 2023-09-03T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/821b4dc3-1295-41e7-b157-39ab212dd6bd (accessed 2026-11-03).
Underlying source: SigmaHQ rule 821b4dc3-1295-41e7-b157-39ab212dd6bd, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.