APT / THREAT GROUP

Xloader

aliases

Last seen:Mar 17, 2026

Intelligence Profile

Xloader is a Rebranding of Formbook malware (mainly a stealer), available for macOS as well.

Formbook has a "magic"-value FBNG (FormBook-NG), while Xloader has a "magic"-value XLNG (XLoader-NG). This "magic"-value XLNG is platform-independent.

Not to be confused with apk.xloader or ios.xloader.

Threat Analysis

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

Intelligence Reports Mentioning Xloader

New OXLOADER Loader Uses Malicious Google Ads to Deliver CastleStealer

The Hacker News· Jun 22, 2026

External References

→https://blog.malwarebytes.com/mac/2021/07/osx-xloader-hides-little-except-its-main-purpose-what-we-learned-in-the-installation-process/

→https://blogs.blackberry.com/en/2021/09/threat-thursday-xloader-infostealer

→https://cip.gov.ua/en/news/khto-stoyit-za-kiberatakami-na-ukrayinsku-kritichnu-informaciinu-infrastrukturu-statistika-15-22-bereznya

→https://malwarebookreports.com/cross-platform-java-dropper-snake-and-xloader-mac-version/

→https://medium.com/@mk7912/from-xloader-to-phantom-stealer-a-dhl-themed-multi-stage-infection-chain-5d552eee828d

Quick Facts

TypeAPT / Threat Group

Aliases3

Also Known As

Formbookosx.xloaderXloader

External Intelligence

Malpedia: osx.xloader

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.

← All Threat Actors·Geopolitics Map·Search Xloader