Suspicious lwp-download Retrieval of Remote File Masquerading as Image via 8220 Gang

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1140Deobfuscate/Decode Files or Information
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the Perl based lwp-download utility fetching a remote resource and saving it with a .gif image extension, a technique the 8220 gang uses in the Hadooken and K4Spreader campaigns to disguise downloaded shell scripts and payloads. Legitimate administrators rarely invoke lwp-download to write image files from the web. This pattern signals staging of second stage tooling on compromised Linux hosts.

Reporting behind it

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Suspicious lwp-download Retrieval of Remote File Masquerading as Image via 8220 Gang

Pivot detection · T1140 · 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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