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Malware Discovered in 19 Visual Studio Code Extensions

ID: 54e65d8c-b94e-5d50-8b97-66b5c69865a5

STIX ID: report--54e65d8c-b94e-5d50-8b97-66b5c69865a5

Feed Name: Infosecurity Magazine (News)

Threat Score
70/100

Date Published: 2025-12-11

Date Updated: 2026-04-22

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ReversingLabs uncovered a campaign of 19 malicious VS Code extensions that hid malware inside dependency folders by using a modified npm package (path-is-absolute) and disguised payloads (a banner.png archive containing binaries) executed via cmstp.exe; the operation deployed a JavaScript dropper and a Rust-based Trojan and employed alternate techniques involving @actions/io, prompting recommendations to inspect extensions, audit dependencies, and use behavioral security tooling.

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