New “Complaint Stealer” Malware Escalates, Targeting Cryptocurrency Wallets & Hospitality Sector

Complaint Stealer malware is being delivered in a series of campaigns that began in mid-October and have escalated in the past two days. The targets are cryptocurrency wallets, programs and browser credentials, with particular interest shown in graphics card information linked to crypto mining. Delivery methods include legitimate software and password-protected archives downloaded from embedded Mega URLs. A common feature among stolen samples is the use of the same command and control location.