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Cyber Threat
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Ransomware group

Qiulong ransomware

8 victims listed on the Qiulong leak site across 2 countries. Most recent disclosure .

Victims
8
0% of all tracked
Countries
2
Most: Brazil
Sectors
2
Most: Healthcare
First seen
Apr 2024
In this database

ThreatAI analysis

Compiled from the ransomware.live profile for Qiulong and from this database. Figures and technique mappings are quoted from the source data, not inferred.

Who Qiulong is

Qiulong is a ransomware group that emerged around April 2024 primarily targeting Brazilian organizations using double extortion and unique tactics such as publishing identity documents of victims' family members to pressure payment.

Recorded activity

Disclosures attributed to Qiulong in this database run from April 2024 to June 2024, totalling 8 victims — 0% of everything tracked here. Qiulong has listed victims in 2 countries in this database, most often Brazil, followed by Canada. The sectors appearing most in its listings are Healthcare, Business Services.

YARA detection rules

qiulong.yar 
/*
Qiulong ransomware
*/

rule Qiulong_Ransomnote
{
    meta:
        author = "ransomware.live"
        family = "ransomware.qiulong"
        description = "Detects Qiulong ransomware ransom note"
        date = "2026-05-04"
        severity = 7
        score = 70

    strings:
        $s1 = "Qiulong" ascii nocase
        $s2 = "QIULONG" ascii
        $s3 = "qiulong.onion" ascii nocase

    condition:
        any of them
}

Community-contributed rules for Qiulong, reproduced as published. Test them against your own corpus before relying on them: rule quality and false-positive behaviour vary by author.

Threat actor analysis

Qiulong has disclosed 8 victims on its leak site, 0% of all ransomware listings tracked in this database. Its earliest disclosure here dates to April 2024.

The group has listed organisations in 2 countries, most often in Brazil (7 victims), followed by Canada.

By industry, its listings concentrate in Healthcare, Business Services — sectors that hold sensitive data or cannot tolerate long outages, both of which raise the pressure to pay.

Like most current ransomware operations, Qiulong is likely to use double extortion: data is stolen before files are encrypted, and organisations that refuse to pay are named on the leak site with the stolen data as leverage.

Generated from public leak-site disclosures aggregated via the ransomware.live API and updated automatically.

Qiulong victims 8

Organization Disclosed
www.concisa.eng.br
BRBrazil
www.indigoent.ca
CACanada
hospitalescultural.com.br
BRBrazil
hominemclinic.com.br
BRBrazil
www.drwilliansegalin.com.br
BRBrazil
draandrearechia.com.br
BRBrazil
www.drlincoln.com.br
BRBrazil
www.rosalvoautomoveis.com.br
BRBrazil

Frequently asked questions

What is Qiulong ransomware?

Qiulong is a ransomware threat group that has claimed 8 victims since its first known activity in April 2024. The group operates by infiltrating target networks, exfiltrating data, encrypting files, and threatening to publish stolen data on a dark web leak site if the ransom is not paid.

How many victims has Qiulong attacked?

Qiulong has claimed 8 victims in our database, representing 0% of all tracked ransomware attacks. The most targeted countries are Brazil, Canada.

Which countries does Qiulong target?

Qiulong has attacked organizations in 2 countries. The top targeted countries are: Brazil, Canada.

Which industries does Qiulong target?

Qiulong most frequently targets the Healthcare, Business Services sectors based on victim disclosures in our database.

Is Qiulong still active?

Qiulong's most recent victim disclosure in our database was on June 24, 2024. Ransomware groups frequently rebrand or go dormant; monitor this page and our ransomware map for the latest activity.