Operation Muck and Load is a supply chain attack campaign centered on a malicious Go module that impersonates a DNS scanner tool to deliver a multi-stage Windows malware loader. The campaign leverages 222 GitHub lure repositories across 190 accounts with automated commit-farming workflows to create false credibility, and uses public dead-drop resolvers across multiple platforms for resilient payload-location resolution. The final payload chain delivers AsyncRAT, Quasar, Remcos, Vidar infostealer, and cryptominers through password-protected 7z archives extracted into masqueraded Microsoft-themed directories.
Go Module
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Malicious Go Module Exposes GitHub Malware Lure Network Spanning 222 Repositories Popular Go Decimal Library Targeted by Long-Running Typosquat with DNS Backdoor A long-running typosquat of a popular Go decimal library was weaponized to include a DNS-based backdoor. The malicious package, github.com/shopsprint/decimal, uses an init() function to poll a dynamic DNS subdomain via TXT records, executing the returned strings as arbitrary commands on the host system.