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Ransomware group profile · #591 by claimed victims

Qlocker ransomware

QLocker was a financially motivated ransomware operation active in 2021 that exclusively targeted QNAP NAS devices exposed to the internet, exploiting a hard-coded credentials vulnerability to compress files into password-protected 7-Zip archives and demanding roughly $400 per victim, netting approximately $350,000 in a single month.

Active First seen Sep 2026
0Victims claimed on leak sites
0Victims in the last 30 days
0Victims in the last 90 days
0Countries hit
1Leak-site URLs tracked, 0 online
—Latest claim recorded

Tactics, techniques and procedures

ATT&CK technique mapping for Qlocker is in progress. Victimology, infrastructure status and leak-site tracking are live above.

Indicators, detections and the full playbook

Hashes, C2 addresses, onion services, Sigma and YARA detections per technique, and the negotiation transcripts are available to signed-in analysts.

See full IOCs

Frequently asked

Is Qlocker ransomware still active?
Qlocker is tracked as active.
How many victims has Qlocker claimed?
VULONE has recorded 0 leak-site victim claims attributed to Qlocker, across 0 countries and 0 sectors.
Which industries does Qlocker target?
Sector data for Qlocker victims is not yet available.
Which countries are most affected by Qlocker?
Country data for Qlocker victims is not yet available.
Where does VULONE get Qlocker victim data?
Claims are collected continuously from the group's own leak sites and cross-checked with ransomware.live and RansomLook. A claim is the group's assertion, not a confirmed breach.

VULONE research mentioning Qlocker

NASBleed: Inside a 343k-Host Credential Spill343,000 plain-text NAS and RDP logins found sitting in an open directory, most of them factory defaults. How the dump feeds access brokers,

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Victim claims are collected from leak sites and enrichment partners (ransomware.live, RansomLook) and represent the group's own assertions, not confirmed breaches. Profile last updated 16 September 2026. Questions or corrections: [email protected].