Malicious OilRig OAuth Application Sign-In via Azure (via azure)
- Product
- azure
- Service
- signinlogs
- Author
- HuntRule
- Published
- 2026-09-23
- Updated
- 2026-09-23
ATT&CK techniques
C2Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
Exfiltration
Impact
What it detects
This rule detects Azure AD sign-ins from the OAuth application client ID 860b23a7-d484-481d-9fea-d3e6e129e249 hardcoded in OilRig's cloud-service-powered downloaders. The group abuses this registered application to obtain tokens for Microsoft Graph and EWS based command-and-control, so any sign-in with this AppId indicates C2 activity.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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Also included
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