SysJoker (Windows)
- First seen
- 2021-12-01 00:00:00
- Malware type
- backdoor
- Family
- Malware family
- Profile updated
- 2026-07-07 14:30:33
Targeted industries: education-and-nonprofits government-and-public-sector technology-and-telecommunications
Context
Sysjoker is a backdoor malware that was first discovered in December 2021 by Intezer. It is sophisticated and written from scratch in C++. Sysjoker is a cross-platform malware that has Linux, Windows, and macOS variants. Possible attack vectors for Sysjoker are email attachments, malicious advertisements, and trojanized software.
Reports & references
- bleepingcomputer.com — New Sysjoker Backdoor Targets Windows Macos And Linux (report)
- blogs.vmware.com — %E2%80%Afsysjoker An Analysis Of A Multi Os Rat (report)
- intezer.com — New Backdoor Sysjoker (report)
- malpedia.caad.fkie.fraunhofer.de — Win.Sysjoker (report)
- research.checkpoint.com — Israel Hamas War Spotlight Shaking The Rust Off Sysjoker (report)