Suspicious Executable Download to Temp Directory via curl on Linux

ATT&CK techniques

C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1105Ingress Tool Transfer
Exfiltration
Impact

What it detects

This rule detects curl invoked to write a downloaded file into the /tmp directory which was used in SAP NetWeaver post exploitation to stage second stage executables and a cryptominer. Writing remote payloads to world writable temp locations is a common ingress and staging technique on Linux. Detecting it surfaces tool transfer that often precedes malware execution.

Reporting behind it

Related detections9 linkedT1105 — drag to rearrange

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Suspicious Executable Download to Temp Directory via curl on Linux

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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