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Cyber Threat
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Ransomware group

Osiris ransomware

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

Victims
2
0% of all tracked
Countries
2
Most: United States
Sectors
2
Most: Manufacturing
First seen
Dec 2025
In this database

ThreatAI analysis

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

Who Osiris is

Osiris is a ransomware-as-a-service operation first observed in November 2025 that uses a Bring Your Own Vulnerable Driver (BYOVD) technique to disable endpoint detection tools before deploying hybrid ECC + AES-128-CTR encryption; Symantec researchers linked its operators to former INC ransomware affiliates.

Recorded activity

Disclosures attributed to Osiris in this database run from December 2025 to January 2026, totalling 2 victims — 0% of everything tracked here. Osiris has listed victims in 2 countries in this database, most often United States, followed by Philippines. The sectors appearing most in its listings are Manufacturing, Hospitality and Tourism.

YARA detection rules

osiris.yar 
/*
osiris ransomware
*/

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

    strings:
        $name1 = "osiris" ascii nocase
        $name2 = "OSIRIS" ascii
        $onion  = "osiris.onion" ascii nocase

    condition:
        any of them
}

Community-contributed rules for Osiris, 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

Osiris has disclosed 2 victims on its leak site, 0% of all ransomware listings tracked in this database. Its earliest disclosure here dates to December 2025.

The group has listed organisations in 2 countries, most often in United States (1 victims), followed by Philippines.

By industry, its listings concentrate in Manufacturing, Hospitality and Tourism — sectors that hold sensitive data or cannot tolerate long outages, both of which raise the pressure to pay.

Like most current ransomware operations, Osiris 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.

Osiris victims 2

Organization Disclosed
American Vanguard
USUnited States
The Araneta Group
PHPhilippines

Frequently asked questions

What is Osiris ransomware?

Osiris is a ransomware threat group that has claimed 2 victims since its first known activity in December 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 Osiris attacked?

Osiris has claimed 2 victims in our database, representing 0% of all tracked ransomware attacks. The most targeted countries are United States, Philippines.

Which countries does Osiris target?

Osiris has attacked organizations in 2 countries. The top targeted countries are: United States, Philippines.

Which industries does Osiris target?

Osiris most frequently targets the Manufacturing, Hospitality and Tourism sectors based on victim disclosures in our database.

Is Osiris still active?

Osiris's most recent victim disclosure in our database was on January 9, 2026. Ransomware groups frequently rebrand or go dormant; monitor this page and our ransomware map for the latest activity.