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Ransomware group Active in the last 30 days

M3rx ransomware

51 victims listed on the M3rx leak site across 21 countries. Most recent disclosure .

Victims
51
0.2% of all tracked
Countries
21
Most: United States
Sectors
9
Most: Professional Services
First seen
Apr 2026
In this database

ThreatAI analysis

Compiled from the ransomware.live profile for M3rx and from this database. Figures and technique mappings are quoted from the source data, not inferred.

Who M3rx is

M3rx is a small ransomware group first observed in 2025, using AES-CTR/AES-GCM encryption and targeting organizations in England, the US, Australia, Germany, Italy, and Switzerland, with around eight claimed victims including a Sydney-based property firm.

Recorded activity

Disclosures attributed to M3rx in this database run from April 2026 to September 2026, totalling 51 victims — 0.2% of everything tracked here. M3rx has listed victims in 21 countries in this database, most often United States, followed by United Kingdom and Canada. The sectors appearing most in its listings are Professional Services, Business Services, Technology.

YARA detection rules

m3rx.yar
/*
m3rx ransomware
*/

rule m3rx_Ransomnote
{
    meta:
        author = "ransomware.live"
        family = "ransomware.m3rx"
        description = "Detects m3rx ransomware ransom note or artifact"
        date = "2026-05-04"
        severity = 7
        score = 70

    strings:
        $name1 = "m3rx" ascii nocase
        $name2 = "M3RX" ascii
        $onion  = "m3rx.onion" ascii nocase

    condition:
        any of them
}

Community-contributed rules for M3rx, 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

M3rx has disclosed 51 victims on its leak site, 0.2% of all ransomware listings tracked in this database. Its earliest disclosure here dates to April 2026.

The group has listed organisations in 21 countries, most often in United States (12 victims), followed by United Kingdom, Canada, Germany.

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

Like most current ransomware operations, M3rx 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.

M3rx victims 51

Organization Disclosed
cpacb.com
CACanada
cpacb.com
CACanada
iccsi.com
iccsi.com
intense.pl
PLPoland
noonsugar.com
AEUAE
oterolaw.com
USUnited States
oterolaw.com
USUnited States
somasolucoes.com
BRBrazil
cipher.systems
USUnited States
cipher.systems
USUnited States
lindner-group.com
ATAustria
tecnoabi.com
BRBrazil
createinfor.pt
PTPortugal
hydraulic-components.net
DEGermany
servicebypremier.com
USUnited States
ausproof.com.au
AUAustralia
ubfreight.com
NZNew Zealand
arambol.co.uk
GBUnited Kingdom
arambol.co.uk
GBUnited Kingdom
suppcentersa.com
ZASouth Africa
suppcentersa.com
ZASouth Africa
eclective.ie
IEIreland
foreconinc.com
USUnited States
wrtworld.com
USUnited States
fasadeconsult.no
NONorway
hbexperts-conseils.ca
CACanada
ktwhs.com
CACanada
maringoodman.com
USUnited States
suppcenter.global / suppcentersa.com
ARArgentina
werkstoff-service.de
DEGermany
jichasa.com
MXMexico
dosocho.es
ESSpain
grupo55.com
ESSpain
psbsementi.it
ITItaly
soft-inc.com
JPJapan
alge-stop.dk
DKDenmark
datasavior.com
USUnited States
kbtoys.com.au
AUAustralia
pvdd.ca
CACanada
emtco.com
USUnited States
it-freitag.de
DEGermany
manateeair.com
USUnited States
airdriephysio.com
GBUnited Kingdom
anvilarts.org.uk
GBUnited Kingdom
boxtopia.co.uk
GBUnited Kingdom
dmschweiz.ch
CHSwitzerland
osoftec.com
DEGermany
primeproperties.com.au
AUAustralia
rainforestclean.com
USUnited States
rotak.it
ITItaly

Frequently asked questions

What is M3rx ransomware?

M3rx is a ransomware threat group that has claimed 51 victims since its first known activity in April 2026. 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 M3rx attacked?

M3rx has claimed 51 victims in our database, representing 0.2% of all tracked ransomware attacks. The most targeted countries are United States, United Kingdom, Canada, Germany.

Which countries does M3rx target?

M3rx has attacked organizations in 21 countries. The top targeted countries are: United States, United Kingdom, Canada, Germany.

Which industries does M3rx target?

M3rx most frequently targets the Professional Services, Business Services, Technology sectors based on victim disclosures in our database.

Is M3rx still active?

M3rx's most recent victim disclosure in our database was on September 29, 2026. Ransomware groups frequently rebrand or go dormant; monitor this page and our ransomware map for the latest activity.