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New Info Stealer Called Stealc

A new information stealer called Stealc that's being advertised on the dark web could emerge as a worthy competitor to other malware of its ilk, according to SEKOIA.

"The threat actor presents Stealc as a fully featured and ready-to-use stealer, whose development relied on Vidar, Raccoon, Mars, and RedLine stealers," SEKOIA said in a Monday report.

The French cybersecurity company said it discovered more than 40 Stealc samples distributed in the wild and 35 active command-and-control (C2) servers, suggesting that the malware is already gaining traction among criminal groups.

Stealc, first marketed by an actor named Plymouth on the XSS and BHF Russian-speaking underground forums on January 9, 2023, is written in C and comes with capabilities to steal data from web browsers, crypto wallets, email clients, and messaging apps. The malware-as-a-service (MaaS) also boasts of a "customizable" file grabber that allows its buyers to tailor the module to siphon files of interest. It further implements loader capabilities to deploy additional payloads.

SEKOIA assessed with "high confidence that its alleged developer quickly established itself as a reliable threat actor, and its malware gained the trust of cybercriminals dealing with infostealers."

Among the distribution vectors used to deliver Stealc are YouTube videos posted from compromised accounts that link to a website peddling cracked software ("rcc-software[.]com").


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