XCSSET

aliases

Last seen:Mar 17, 2026

Intelligence Profile

Malware family tracked by Malpedia. ID: osx.xcsset

Threat Analysis

XCSSET 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://blog.trendmicro.com/trendlabs-security-intelligence/xcsset-mac-malware-infects-xcode-projects-performs-uxss-attack-on-safari-other-browsers-leverages-zero-day-exploits/

→https://documents.trendmicro.com/assets/pdf/XCSSET_Technical_Brief.pdf

→https://objective-see.com/blog/blog_0x5F.html

→https://securelist.com/malware-for-the-new-apple-silicon-platform/101137/

→https://www.crowdstrike.com/blog/how-crowdstrike-analyzes-macos-malware-to-optimize-automated-detection-capabilities

Quick Facts

TypeAPT / Threat Group

Aliases2

Also Known As

XCSSETosx.xcsset

External Intelligence

Malpedia: osx.xcsset

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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