CoinDesk-Impersonation Campaign Delivers AMOS and Windows Malware via Google Docs

A threat actor impersonated a CoinDesk marketing executive in X direct messages, using post-Black Hat and DEFCON cryptocurrency-conference lures to target security researchers. The messages linked to legitimate Google Docs containing container-bound Google Apps Script that profiled visitors and sent their IP address, geolocation, browser details, and cryptocurrency-wallet-extension data to the operator through Telegram.

The campaign routed victims to operating-system-specific malware: macOS users received a variant of the AMOS infostealer, while Windows users were served an encoded PowerShell loader chain and installers signed with three stolen or fraudulently issued certificates. Recovered Windows components included a malicious NetSupport Manager deployment, a persistent rogue local certificate authority capable of TLS interception, and a Ledger-wallet-focused implant. Russian-language comments and C2 artifacts indicate the operator may be Russian-speaking, but no threat group has been attributed.