Netrunner Ransomware
TrackedThreat actor group tracked in the global ransomware database · Last disclosure: Apr 3, 2026
ThreatAI Analysis
Compiled from the ransomware.live profile for Netrunner and from this database. Figures and technique mappings are quoted from the source data, not inferred.
Who Netrunner is
NetRunner is a ransomware group active from at least 2025 targeting diverse sectors including healthcare, telecommunications, manufacturing, and agriculture across Japan, Italy, the US, and Jordan, notably demanding a $100M ransom from Nippon Medical School Musashi Kosugi Hospital.
Recorded activity
Disclosures attributed to Netrunner in this database run from April 2026 to April 2026, totalling 6 victims — 0% of everything tracked here. Netrunner has listed victims in 5 countries in this database, most often Japan, followed by United States and Italy. The sectors appearing most in its listings are Healthcare, Telecommunication, Consumer Services.
Indicators of compromise
Showing a sample of 1 EMAIL on file. Hashes and network indicators published for Netrunner. Leak-site addresses are deliberately excluded. Indicators age quickly — treat a match as a starting point for investigation, and an absence of matches as no assurance.
YARA detection rules
netrunner.yar
/*
netrunner ransomware
*/
rule netrunner_Ransomnote
{
meta:
author = "ransomware.live"
family = "ransomware.netrunner"
description = "Detects netrunner ransomware ransom note or artifact"
date = "2026-05-04"
severity = 7
score = 70
strings:
$name1 = "netrunner" ascii nocase
$name2 = "NETRUNNER" ascii
$onion = "netrunner.onion" ascii nocase
condition:
any of them
}Community-contributed rules for Netrunner, 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
Netrunner is a ransomware threat group that has disclosed 6 victims in publicly accessible leak site data, representing 0% of all ransomware attacks tracked in this database. The earliest victim disclosure attributed to Netrunner in our dataset dates to April 2026.
Geographically, Netrunner has targeted organisations in 5 countries. The most frequently targeted nation is Japan with 2 victim organisations. Other heavily targeted nations include United States, Italy, India.
Industry-wise, Netrunner shows a concentration in the Healthcare, Telecommunication, Consumer Services sectors. These industries are frequently targeted because they manage sensitive data, critical operations, or have lower tolerance for operational downtime — conditions that increase ransom payment likelihood.
Like most modern ransomware operations, Netrunner 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 6 most recent of the 6 disclosures we hold for this group; use the link beneath it to page through all of them.
Recent Victim Disclosures (showing 6 of 6)
| # | Organization | Country | Sector | Date |
|---|---|---|---|---|
| 1 | GEG Telecomunicazioni geg.it | 🇮🇹 Italy | Telecommunication | Apr 3, 2026 |
| 2 | Harman Fitness crunchfitness.com | 🇺🇸 United States | Consumer Services | Apr 3, 2026 |
| 3 | Jordan India Fertilizer Company jifco.co | 🇯🇴 Jordan | Agriculture and Food Production | Apr 3, 2026 |
| 4 | Nippon Medical School Musashi Kosugi Hospital www.nms.ac.jp/kosugi-h | 🇯🇵 Japan | Healthcare | Apr 3, 2026 |
| 5 | Seoyon E-Hwa Summit seoyonehap.com | 🇮🇳 India | Manufacturing | Apr 3, 2026 |
| 6 | Shiraume Hospital www.shiraume.or.jp | 🇯🇵 Japan | Healthcare | Apr 3, 2026 |
Frequently Asked Questions
What is Netrunner ransomware?
Netrunner is a ransomware threat group that has claimed 6 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 Netrunner attacked?
Netrunner has claimed 6 victims in our database, representing 0% of all tracked ransomware attacks. The most targeted countries are Japan, United States, Italy, India.
Which countries does Netrunner target?
Netrunner has attacked organizations in 5 countries. The top targeted countries are: Japan, United States, Italy, India.
Which industries does Netrunner target?
Netrunner most frequently targets the Healthcare, Telecommunication, Consumer Services sectors based on victim disclosures in our database.
Is Netrunner still active?
Netrunner's most recent victim disclosure in our database was on April 3, 2026. Ransomware groups frequently rebrand or go dormant; monitor this page and our ransomware map for the latest activity.