In recent weeks, Rapid7 has observed an increased volume of incidents involving domains generated by domain generation algorithms (DGAs).
DGAs are a known technique leveraged by malware authors to quickly create a large number of domain names, which will point to command and control (C2) servers operated by the attackers. Observed domains shared multiple commonalities such as .infotop-level domains and a fixed length of 24 alphanumeric characters. Attacks that start with a ClickFix social engineering lure quickly morph into more sophisticated campaigns using PowerShell scripts hosted on a remote server for in-memory execution of obfuscated .NET loader, which in turn injects a newly-discovered infostealer into MSBuild.exe via process hollowing.
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Source: Rapid7
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