Malicious StyleSmuggler (CVE-2026-75650) Post-Exploitation Implant Process (via process_creation)

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1036.004Masquerade Task or Service
- T1036.005Match Legitimate Resource Name or Location
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

Detects execution of the Rust backdoor deployed on Magento and Adobe Commerce servers after successful exploitation of StyleSmuggler (CVE-2026-75650). The implant masquerades as a kernel thread ([kworker/u:8:0]) or as legitimate system binaries (fc-cache, chronyd, gvfsd-user) running from temporary or hidden home-directory paths. Kernel threads are never created through exec, so a kworker-like command line in a process creation event indicates masquerading; genuine fc-cache and chronyd binaries do not run from these paths.

Reporting behind it

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Malicious StyleSmuggler (CVE-2026-75650) Post-Exploitation Implant Process (via process_creation)

Pivot detection · T1036.005 · 9 related

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