A malicious NuGet package (Tracer.Fody.NLog) stole crypto wallet data for 5 years using homoglyphs and typosquatting to evade detection. The .NET supply chain attack linked to a Russian C2 server.
Homoglyph
A NuGet typosquat named Netherеum.All used a Cyrillic homoglyph to fool 11M+ downloads. The malicious package injected an XOR-decoded backdoor to steal crypto wallet and private key data.