Suspicious File Download to Shared Memory Directory 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 or wget writing a payload into the /dev/shm shared memory directory on Linux which the TeamTNT Doppelganger campaign uses to stage the gsocket backdoor in memory and evade disk based detection on compromised Docker hosts.

Reporting behind it

Related detections9 linkedT1105 — drag to rearrange

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Suspicious File Download to Shared Memory Directory 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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