APT / THREAT GROUP

USBCulprit

aliases

Last seen:Mar 17, 2026

Intelligence Profile

According to Kaspersky, USBCulprit is a malware that is capable of scanning various paths in victim machines, collecting documents with particular extensions and passing them on to USB drives when they are connected to the system. It can also selectively copy itself to a removable drive in the presence of a particular file, suggesting it can be spread laterally by having designated drives infected and the executable in them opened manually.

Threat Analysis

USBCulprit is a known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.

External References

→https://drive.google.com/file/d/11otA_VmL061KcFC5MhDYuNdIKHYbpyrd/view

→https://securelist.com/cycldek-bridging-the-air-gap/97157/

→https://www.welivesecurity.com/wp-content/uploads/2021/12/eset_jumping_the_air_gap_wp.pdf

Quick Facts

TypeAPT / Threat Group

Aliases2

Also Known As

USBCulpritwin.usbculprit

External Intelligence

Malpedia: win.usbculprit

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.

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