Detectionlowtest

Sign-ins by Unknown Devices

Monitor and alert for Sign-ins by unknown devices from non-Trusted locations.

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Launch

Michael EppingCreated Tue Jun 28Updated Wed Oct 054d136857-6a1a-432a-82fc-5dd497ee5e7ccloud

Log Source

Azuresigninlogs

ProductAzure← raw: azure

Servicesigninlogs← raw: signinlogs

Detection Logic

detection:
    selection:
        AuthenticationRequirement: singleFactorAuthentication
        ResultType: 0
        NetworkLocationDetails: '[]'
        DeviceDetail.deviceId: ''
    condition: selection

False Positives

Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References

Resolving title…

learn.microsoft.com

MITRE ATT&CK

Tactics

TA0004 · Privilege Escalation TA0003 · Persistence TA0001 · Initial Access TA0005 · Defense Evasion

Sub-techniques

T1078.004 · Cloud Accounts

Rule Metadata

Rule ID

4d136857-6a1a-432a-82fc-5dd497ee5e7c

Status

test

Level

low

Type

Detection

Created

Tue Jun 28

Modified

Wed Oct 05

Author

Michael Epping

Path

rules/cloud/azure/signin_logs/azure_ad_sign_ins_from_unknown_devices.yml

Raw Tags

attack.privilege-escalationattack.persistenceattack.initial-accessattack.defense-evasionattack.t1078.004

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