Computers

This dangerous new spyware targets Windows computers with infected USB drives

This dangerous new spyware targets Windows computers with infected USB drives
Written by Publishing Team

Researchers have discovered new malware that targets Windows computers, but they aren’t clear why it does what it does.

Red Canary researchers have identified a new worm-like virus that spreads offline using infected USB sticks.

The researchers did not name the malware, but did associate it with a “cluster of malicious behavior” known as Raspberry Robin.

The researchers discovered that the worm spreads to new devices via a malicious.LNK file after studying an infected USB drive. When the victim inserts the USB drive, the worm starts a new process with cmd.exe and executes the file.

“While msiexec.exe downloads and executes legitimate installer packages, adversaries also leverage it to deliver malware,” the report states. “Raspberry Robin uses msiexec.exe to attempt external network communication to a malicious domain for C2 purposes.”

To reach out to its C2 server, the further researchers state, the worm uses Microsoft Standard Installer (msiexec.exe). They speculate the server is hosted on a compromised QNAP device, with TOR exit nodes being used as extra C2 infrastructure.

But one of the key questions remains unanswered – what’s the whole point?, as the researchers are yet to discover the malware’s endgame. “Absent additional information on later-stage activity, it’s difficult to make inferences on the goal or goals of these campaigns,” the expert said.

What’s more, they found that it installs a malicious DLL file, probably to establish persistence.

“We also don’t know why Raspberry Robin installs a malicious DLL,” the researchers said. “One hypothesis is that it may be an attempt to establish persistence on an infected system, though additional information is required to build confidence in that hypothesis.”

News Summary:

  • This dangerous new spyware targets Windows computers with infected USB drives
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