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Tuesday, February 7, 2023

New RedLine Stealer Distributed Using Coronavirus-Themed Email Campaign

In early March 2020, Proofpoint researchers observed an email campaign attempting to deliver a previously unknown malware which the malware author calls RedLine Stealer. This name (not to be confused with the FireEye tool “Redline”) can be seen in the forum advertisements, code comments, and command and control (C&C) panel.

The emails in this campaign abused the Folding@home brand, which is a distributed computing project for disease research, while also asking the recipient to help find a coronavirus cure. This campaign primarily targeted healthcare and manufacturing industries in the United States.

RedLine Stealer is new malware available for sale on Russian underground forums with several pricing options: $150 lite version; $200 pro version; $100 / month subscription option. It steals information from browsers such as login, autocomplete, passwords, and credit cards. It also collects information about the user and their system such as the username, their location, hardware configuration, and installed security software. A recent update to RedLine Stealer also added the ability to steal cryptocurrency cold wallets.

RedLine Stealer is written in C#. While not particularly sophisticated, we were surprised by the high quality and readability of the code. Notably with its proper use of delegates, class inheritance, and data models along with using SOAP for its C&C channel. This indicates a moderate-to-high level of experience with the .NET programming language from the developer. RedLine Stealer also appears to be under active development as shown by the recent introduction of new features.

Read more at Proofpoint

Homeland Security Todayhttp://www.hstoday.us
The Government Technology & Services Coalition's Homeland Security Today (HSToday) is the premier news and information resource for the homeland security community, dedicated to elevating the discussions and insights that can support a safe and secure nation. A non-profit magazine and media platform, HSToday provides readers with the whole story, placing facts and comments in context to inform debate and drive realistic solutions to some of the nation’s most vexing security challenges.

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