Raccoon Stealer Version 2.0

Product Serial: B-2022-06-30a

TLP: WHITE

After the group's initial hiatus, Raccoon Stealer has returned with a brand new version 2.0. In this briefing, ZeroFox Intelligence provides a technical analysis of this new version.

Standing Intelligence Requirements

MAL

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https://cloud.zerofox.com/alpha_team/advisories/14956

Link to Download

View the full brief here.

Executive Summary

On June 4, 2022, ZeroFox Intelligence discovered a then-unknown information stealer being distributed by ProCrackerz, a website distributing fake software cracks and key generators (keygens). The earliest known instance of this information stealer observed by ZeroFox Intelligence was a sample uploaded to VirusTotal on April 19, 2022. Twitter user @James_inthe_box suggested the name “Recordbreaker” for it based on the use of “record” as the User-Agent string in each sample. In May 2022, logs for sale with “Raccoon Stealer V2.0” branding were discovered that matched what ZeroFox Intelligence was observing with Recordbreaker. Due to this and multiple other private confirmations, ZeroFox Intelligence asserts with MEDIUM confidence that Raccoon Stealer has returned and that Recordbreaker is actually Raccoon Stealer version 2.0.

Details

Raccoon Stealer version 2.0 is capable of targeting Chromium and Mozilla-based browsers by looking for well-known file names in specific directories. For Chromium-based browsers, threat actors using Raccoon Stealer 2.0 have the ability to specify a list of Chrome extension IDs and associated files as well. In ZeroFox Intelligence’s observations, these consisted entirely of cryptocurrency extensions. Raccoon Stealer 2.0 attempts to collect credentials, cookies, autofill data, credit cards, and data associated with specified Chrome extensions. For Mozilla browsers such as Firefox, only credentials, cookies, and autofill data were targeted. Other applications like Telegram and specific cryptocurrency applications can be targeted as well. To ensure that all cryptocurrency wallets are collected, a separate function exists solely to collect “wallet.dat” files. For any applications or files without specific support, a generic “grbr_” function exists to allow actors to specify files by path and a name or pattern.