Suspicious Data Transfer via curl to Raw IP Address

ATT&CK techniques

C2 → Exfiltration

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1105Ingress Tool Transfer
Exfiltration
- T1048.003Exfiltration Over Unencrypted Non-C2 Protocol
Impact

What it detects

This rule detects curl uploading or downloading files, the transfer mechanism this threat actor used to move a collection archive and tooling to and from attacker infrastructure. While curl has legitimate uses, its upload and download flags in interactive contexts frequently indicate ingress tool transfer or data exfiltration.

Reporting behind it

Related detections9 linkedT1105 — drag to rearrange

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Suspicious WebDAV Retrieval via rundll32 and davclnt.dll (via process_creation)

Suspicious PowerShell Download to Temp and In-Memory Execution via IEX (via process_creation)

Suspicious Data Transfer via curl to Raw IP Address

Pivot detection · T1105 · 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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