Sigma rule: Malicious IP Address Sign-In Suspicious

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-3cb0618cbbb4, updated 2023-09-07T00:00:00.000Z.

Rule

Title
Malicious IP Address Sign-In Suspicious
Status
test
Level
high
Author
Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'
Date
2023-09-07
File
rules/cloud/azure/identity_protection/azure_identity_protection_malicious_ip_address_suspicious.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Indicates sign-in from a malicious IP address known to be malicious at time of sign-in.

Log source

product
azure
service
riskdetection

Detection

selection:
    riskEventType: 'suspiciousIPAddress'
condition: selection

False positives (as the rule lists them)

  • We recommend investigating the sessions flagged by this detection in the context of other sign-ins from the user.

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_malicious_ip_address_suspicious.yml

Sources and licences

  • SigmaHQ

    "Malicious IP Address Sign-In Suspicious" by Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo' (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/azure/identity_protection/azure_identity_protection_malicious_ip_address_suspicious.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: Malicious IP Address Sign-In Suspicious",
entity page, dataset version ref-3cb0618cbbb4, updated 2023-09-07T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/36440e1c-5c22-467a-889b-593e66498472 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 36440e1c-5c22-467a-889b-593e66498472, 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.