D4

D4rk4rmy Ransomware

Tracked

Threat actor group tracked in the global ransomware database Β· Last disclosure: Aug 16, 2025

Ransomware-as-a-Service (RaaS) Double Extortion Target: Financial Services
18
Total Victims
0.1% of all tracked
12
Countries Targeted
8
Sectors Targeted
2025
First Seen

ThreatAI Analysis

Compiled from the ransomware.live profile for D4rk4rmy and from this database. Figures and technique mappings are quoted from the source data, not inferred.

Who D4rk4rmy is

D4rk4rmy is a ransomware and data extortion group active since at least 2025, targeting financial services, hospitality, technology, and logistics sectors, operating a RaaS model with notable claimed victims including the Monte Carlo casino resort.

Recorded activity

Disclosures attributed to D4rk4rmy in this database run from July 2025 to August 2025, totalling 18 victims β€” 0.1% of everything tracked here. D4rk4rmy has listed victims in 12 countries in this database, most often United States, followed by Brazil and Taiwan. The sectors appearing most in its listings are Financial Services, Business Services, Technology.

YARA detection rules

d4rk4rmy.yar
/*
d4rk4rmy ransomware
*/

rule d4rk4rmy_Ransomnote
{
    meta:
        author = "ransomware.live"
        family = "ransomware.d4rk4rmy"
        description = "Detects d4rk4rmy ransomware ransom note or artifact"
        date = "2026-05-04"
        severity = 7
        score = 70

    strings:
        $name1 = "d4rk4rmy" ascii nocase
        $name2 = "D4RK4RMY" ascii
        $onion  = "d4rk4rmy.onion" ascii nocase

    condition:
        any of them
}

Community-contributed rules for D4rk4rmy, 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

D4rk4rmy is a ransomware threat group that has disclosed 18 victims in publicly accessible leak site data, representing 0.1% of all ransomware attacks tracked in this database. The earliest victim disclosure attributed to D4rk4rmy in our dataset dates to July 2025.

Geographically, D4rk4rmy has targeted organisations in 12 countries. The most frequently targeted nation is United States with 5 victim organisations. Other heavily targeted nations include Brazil, Taiwan, Japan.

Industry-wise, D4rk4rmy shows a concentration in the Financial Services, Business Services, Technology sectors. These industries are frequently targeted because they manage sensitive data, critical operations, or have lower tolerance for operational downtime β€” conditions that increase ransom payment likelihood.

Like most modern ransomware operations, D4rk4rmy likely employs a double extortion model: encrypting victim files while simultaneously exfiltrating data, creating dual pressure to pay the ransom. Victim organisations that refuse payment face having their data published on the group's dark web leak site.

Note: This profile is generated from public leak site disclosures aggregated via the ransomware.live API. Data is updated automatically. The table below lists the 18 most recent of the 18 disclosures we hold for this group; use the link beneath it to page through all of them.

Recent Victim Disclosures (showing 18 of 18)

# Organization Country Sector Date
1 THE MILLENNIUM GROUP tmgofficeservices.com πŸ‡ΊπŸ‡Έ United States Business Services Aug 16, 2025
2 VINSON & ELKINS LLP www.velaw.com πŸ‡ΊπŸ‡Έ United States Business Services Aug 16, 2025
3 MMA TRANSFERS www.mmatransfers.com πŸ‡¬πŸ‡§ United Kingdom Transportation/Logistics Aug 12, 2025
4 BRIDGEWATER ASSOCIATES www.bridgewater.com πŸ‡ΊπŸ‡Έ United States Financial Services Aug 7, 2025
5 MAGELLAN FINANCIAL GROUP www.magellangroup.com.au πŸ‡¦πŸ‡Ί Australia Financial Services Aug 7, 2025
6 MIZUHA FINANCIAL GROUP www.mizuhogroup.com πŸ‡―πŸ‡΅ Japan Financial Services Aug 7, 2025
7 ONEX CANADA ASSET MANAGEMENT INC onex.com πŸ‡¨πŸ‡¦ Canada Financial Services Aug 7, 2025
8 TSAI CAPITAL tsaicapital.com πŸ‡ΊπŸ‡Έ United States Financial Services Aug 7, 2025
9 BIG ROCK RESORT www.bigrockresort.net πŸ‡ΊπŸ‡Έ United States Hospitality and Tourism Aug 3, 2025
10 CASINO DE MONTE-CARLO www.montecarlosbm.com MC Hospitality and Tourism Aug 3, 2025
11 DIMERCO dimerco.com πŸ‡ΉπŸ‡Ό Taiwan Transportation/Logistics Aug 3, 2025
12 Digitall Evolution www.digitallevolution.com.br πŸ‡§πŸ‡· Brazil Technology Jul 28, 2025
13 VINHAS E REDENSCHI ADVOGADOS vradv.com.br πŸ‡§πŸ‡· Brazil Business Services Jul 28, 2025
14 BIG SILVER bigsilvermanu.com πŸ‡ΉπŸ‡­ Thailand Manufacturing Jul 8, 2025
15 MAFATE BUSINESS ENTERPRISE mafate.co.za πŸ‡ΏπŸ‡¦ South Africa Energy Jul 8, 2025
16 University of Puerto RicoRΓ­o Piedras Campus uprrp.edu PR Education Jul 8, 2025
17 ELZAB elzab.com.pl πŸ‡΅πŸ‡± Poland Technology Jul 7, 2025
18 Taiwan Digital Streaming Co Ltd twds.com.tw πŸ‡ΉπŸ‡Ό Taiwan Technology Jul 7, 2025

Frequently Asked Questions

What is D4rk4rmy ransomware?

D4rk4rmy is a ransomware threat group that has claimed 18 victims since its first known activity in July 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 D4rk4rmy attacked?

D4rk4rmy has claimed 18 victims in our database, representing 0.1% of all tracked ransomware attacks. The most targeted countries are United States, Brazil, Taiwan, Japan.

Which countries does D4rk4rmy target?

D4rk4rmy has attacked organizations in 12 countries. The top targeted countries are: United States, Brazil, Taiwan, Japan.

Which industries does D4rk4rmy target?

D4rk4rmy most frequently targets the Financial Services, Business Services, Technology sectors based on victim disclosures in our database.

Is D4rk4rmy still active?

D4rk4rmy's most recent victim disclosure in our database was on August 16, 2025. Ransomware groups frequently rebrand or go dormant; monitor this page and our ransomware map for the latest activity.