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Cyber Threat
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Ransomware group

Kryptos ransomware

5 victims listed on the Kryptos leak site across 5 countries. Most recent disclosure .

Victims
5
0% of all tracked
Countries
5
Most: United States
Sectors
5
Most: Public Sector
First seen
Oct 2025
In this database

ThreatAI analysis

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

Who Kryptos is

Kryptos is a small ransomware group first observed in October 2025, conducting simultaneous attacks across North America and Oceania on its debut day with a focus on professional, technical, and legal service sectors, with only 3 known documented victims.

Recorded activity

Disclosures attributed to Kryptos in this database run from October 2025 to November 2025, totalling 5 victims — 0% of everything tracked here. Kryptos has listed victims in 5 countries in this database, most often United States, followed by Canada and Australia. The sectors appearing most in its listings are Public Sector, Education, Business Services.

YARA detection rules

kryptos.yar 
/*
kryptos ransomware
*/

rule kryptos_Ransomnote
{
    meta:
        author = "ransomware.live"
        family = "ransomware.kryptos"
        description = "Detects kryptos ransomware ransom note or artifact"
        date = "2026-05-04"
        severity = 7
        score = 70

    strings:
        $name1 = "kryptos" ascii nocase
        $name2 = "KRYPTOS" ascii
        $onion  = "kryptos.onion" ascii nocase

    condition:
        any of them
}

Community-contributed rules for Kryptos, 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

Kryptos has disclosed 5 victims on its leak site, 0% of all ransomware listings tracked in this database. Its earliest disclosure here dates to October 2025.

The group has listed organisations in 5 countries, most often in United States (1 victims), followed by Canada, Australia, India.

By industry, its listings concentrate in Public Sector, Education, 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, Kryptos 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.

Kryptos victims 5

Organization Disclosed
Provincial Department of Health Services Sri Lanka
LKSri Lanka
Adichunchanagiri Institute Of Technology
INIndia
Har******
AUAustralia
Mea************
USUnited States
Nor*************
CACanada

Frequently asked questions

What is Kryptos ransomware?

Kryptos is a ransomware threat group that has claimed 5 victims since its first known activity in October 2025. 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 Kryptos attacked?

Kryptos has claimed 5 victims in our database, representing 0% of all tracked ransomware attacks. The most targeted countries are United States, Canada, Australia, India.

Which countries does Kryptos target?

Kryptos has attacked organizations in 5 countries. The top targeted countries are: United States, Canada, Australia, India.

Which industries does Kryptos target?

Kryptos most frequently targets the Public Sector, Education, Business Services sectors based on victim disclosures in our database.

Is Kryptos still active?

Kryptos's most recent victim disclosure in our database was on November 6, 2025. Ransomware groups frequently rebrand or go dormant; monitor this page and our ransomware map for the latest activity.