Malicious Phishing Data Exfiltration to SheetBest API by GitBait Campaign (via proxy)
- Category
- proxy
- Author
- HuntRule
- Published
- 2026-09-27
- Updated
- 2026-09-27
ATT&CK techniques
C2 → ExfiltrationRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
Exfiltration
Impact
What it detects
This rule detects HTTP POST requests to the api.sheetbest.com sheets endpoint used by the GitBait phishing campaign to exfiltrate stolen banking credentials from GitHub Pages lures. The campaign abuses the SheetBest Google Sheets API as a low-cost data drop for harvested victim data. Detecting these calls surfaces active credential exfiltration.
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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