Suspicious Data Exfiltration via curl Multipart Upload to Gate Endpoint

ATT&CK techniques

Cred Access → Exfiltration

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1555Credentials from Password Stores
Discovery
Lateral Movement
Collection
C2
Exfiltration
- T1041Exfiltration Over C2 Channel
Impact

What it detects

This rule detects curl uploading a local archive as a multipart form file to a remote gate endpoint, the exfiltration step of the macOS infostealer. After collecting browser and keychain material into a zip the stealer posts it to attacker infrastructure. A curl multipart file upload of a compressed archive to a generic gate path reflects staged data theft rather than normal application traffic.

Reporting behind it

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Suspicious Data Exfiltration via curl Multipart Upload to Gate Endpoint

Pivot detection · T1555 · 9 related

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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