MALWARE FAMILY
QHost
Internal ID: win.qhost
1
aliases
Last seen:Mar 17, 2026
Intelligence Profile
According to F-Secure, this is a network worm with backdoor capabilities, which spreads itself under Win32 systems. The worm was reported in-the-wild in July-August, 2000. The worm itself is a Win32 executable file and about 120K long, written in MS Visual C++.
Threat Analysis
QHost is a malware family tracked by threat intelligence researchers and catalogued in the Malpedia dataset. It represents a distinct malicious software lineage with identifiable code characteristics, behaviors, and victimology.
Quick Facts
TypeMalware Family
Aliases1
Also Known As
win.qhost
Research Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.