Malicious Second-Stage Loader Fetch of SLT Payload via Curl or Wget

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 download utilities retrieving the slt loader payload used after Langflow CVE-2026-55255 exploitation to stage further tooling. The actor fetches this named endpoint over HTTP and pipes it to a shell for execution. The specific loader path combined with a download utility is a strong ingress tool transfer indicator.

Reporting behind it

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Malicious Second-Stage Loader Fetch of SLT Payload via Curl or Wget

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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