Skip to content
Cyber Threat
CTI Academy Sponsor CTI Academy
Ransomware victim

EMS1R

Listed by Direwolf on · organisation based in United States

ems1r.com

Disclosed
Sep 8, 2026
Leak-site listing date
Threat group
Direwolf
147 victims listed
Country
United States
#1 most targeted
Sector
Not recorded

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Direwolf. Figures and technique mappings are quoted from the source data, not inferred.

About the Direwolf group

Dire Wolf is a sophisticated human-operated ransomware group first documented in May 2025, written in Golang using Curve25519/ChaCha20 encryption, targeting manufacturing and technology sectors across 13+ countries with ransoms up to $500,000, operated by a tight core team rather than a broad affiliate program. Direwolf has listed 136 victims since April 2025.

Vulnerabilities Direwolf is recorded exploiting

5 of these 5 are in the CISA Known Exploited Vulnerabilities catalog, 5 of them recorded by CISA as used in ransomware campaigns. CVEs attributed to Direwolf across its reported activity. There is no indication that any of these was involved in the EMS1R incident — the source data does not record an entry point.

Incident analysis

EMS1R was listed by Direwolf ransomware, a group with 147 victims recorded in this database. The listing appeared on the group's leak site on September 8, 2026.

EMS1R is based in United States. United States ranks #1 worldwide for ransomware disclosures, with 9,972 victims in this database.

Direwolf typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was EMS1R attacked by ransomware?

Yes. EMS1R was listed as a victim of the Direwolf ransomware group on September 8, 2026. The organisation is based in United States. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked EMS1R?

EMS1R was attacked by Direwolf ransomware. Direwolf is one of the most active ransomware groups, having claimed 147 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the EMS1R ransomware attack occur?

The ransomware attack on EMS1R was disclosed on September 8, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the EMS1R ransomware attack?

The specific data stolen from EMS1R has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. Sensitive business data was likely targeted.

How can organisations protect against Direwolf attacks?

To defend against Direwolf and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.