easy-day-js Mastra npm Supply Chain - C2 Exfil
This rule detects network communication associated with the 'easy-day-js Mastra npm Supply Chain' compromise. The first alert identifies C2 exfiltration attempts over TLS to a specific IP address (23.254.164.123) on port 443. The second alert identifies a stage-2 payload download from another specific IP address (23.254.164.92) on port 8000, specifically looking for the URI '/update/49890878'. These indicators are linked to the 'protocal.cjs' and 'setup.cjs' malware, respectively, and are part of a supply chain attack.
Suricata
