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Microsoft Discovers Cryptocurrency Stealer That Spreads Through USB Drives and Uses Tor

2 weeks 4 days ago
Ars Technica's senior security editor reports: Microsoft says it has detected new self-propagating malware that spreads through USB drives in search of cryptocurrency credentials, which it then sends to attacker-controlled servers. The company named the worm Crypto Clipper because it monitors the contents of device clipboards for patterns consistent with wallet addresses or seed phrases. When found, the malware also takes five screenshots over a 10-second period... "The execution of this clipper is notable because it does not depend on a traditional installer or exposed IP-based C2 infrastructure," Microsoft said Thursday. "Instead, it deploys a portable Tor client, routes traffic through a local SOCKS5 proxy, and blends data theft with remote code execution, turning a financially motivated stealer into a lightweight backdoor." Microsoft said it observed Crypto Clipper spreading through .lnk file on a USB drive. These files store executable code. When an infected USB drive is plugged into a device, the code checks whether it is already installed on the machine. If it isn't, the malware downloads it through the Tor proxy. To better conceal evidence of the worm, the malware scans the infected USB drive and names the .lnk files with similar names... The stealer also replaces addresses it finds with ones belonging to attacker-controlled wallets. This allows the malware to divert payments to the attacker's pockets. Microsoft believes the purpose of the screenshots is to provide context that may be useful. "This malware family shows how lightweight, script-based stealers can deliver outsized impact when paired with anonymized communications and runtime tasking," Microsoft said. "The combination of Tor-routed C2, clipboard targeting, screenshot capture, and remote code execution gives attackers both immediate monetization paths and continued control over compromised devices." Thanks to Slashdot reader joshuark for sharing the news.

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EditorDavid

FSF Patches Two-Year-Old Vulnerability Found by AI Researchers in GNU Savannah Repository

2 weeks 4 days ago
The Free Software Foundation's GNU Savannah hosts thousands of free software projects — both GNU and non-GNU projects, including Drupal. But in early May, security researchers from Hacktron.AI reported vulnerabilities and demonstrated an exploit, according to a new statement Friday from the FSF: We have been working with these researchers since their initial report, and have also addressed additional security issues they submitted. All reported issues have been patched thanks to the hard work of GNU and FSF volunteers, as well as FSF staff. After thorough review, we have found no reason to believe that sensitive project data or credentials were accessed, nor that there has been any compromise of Savannah's software supply chain. Nevertheless, we take the security of the GNU system, the tools which make it possible, and the projects we host very seriously. This body of software has become essential to millions (if not billions) of users around the world. We are therefore taking additional precautionary steps. Though the initial security issue was reported to us in early May, the vulnerabilities were discovered in software that was published approximately two years prior. We will be communicating directly with Savannah-hosted projects about steps they can take to review and strengthen the security of their projects. We have also communicated with the other Savane instances we're aware of to assist their review of their own environments, and take any steps needed to help protect their users... This statement is intended as an initial notice. We expect to publish a report on the incident within 30 days. Hacktron.AI bills itself as "Your AI teammate for security." Its web page notes that its investors include Meta, DeepMind, and Perplexity.

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EditorDavid