Cyber Threat Intelligence
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Ransomware Victim Energy & Utilities

U.S. Electrical Services and Wiedenbach Brown

Ransomware attack by Moneymessage · Disclosed September 21, 2026

Date Disclosed
Sep 21, 2026
2026
Threat Group
Moneymessage
18 total victims
Country
Unknown
Industry
Energy & Utilities

ThreatAI Analysis

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

U.S. Electrical Services and Wiedenbach Brown, which operates in the Energy & Utilities sector, were listed on the Moneymessage dark web leak site on 21 September 2026.

About the Moneymessage group

Money Message emerged in March 2023 targeting Windows and Linux systems across banking, transportation, and professional services sectors, demanding ransoms in the millions and publishing stolen data on their blog if unpaid, with most known victims based in the US. Moneymessage has listed 35 victims since January 2023.

Incident Analysis

U.S. Electrical Services and Wiedenbach Brown was targeted by Moneymessage ransomware, one of the most active ransomware groups in our database with 18 confirmed victims globally. The attack was disclosed on September 21, 2026, when U.S. Electrical Services and Wiedenbach Brown appeared on the group's dark web leak site.

Sector context: Organisations in this sector hold valuable data and operational systems that ransomware groups seek to exploit for financial gain through encryption and data exfiltration.

Moneymessage typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Sep 21, 2026 20:00 UTC.

Frequently Asked Questions

Was U.S. Electrical Services and Wiedenbach Brown attacked by ransomware?

Yes. U.S. Electrical Services and Wiedenbach Brown was listed as a victim of the Moneymessage ransomware group on September 21, 2026 and operates in the Energy & Utilities sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked U.S. Electrical Services and Wiedenbach Brown?

U.S. Electrical Services and Wiedenbach Brown was attacked by Moneymessage ransomware. Moneymessage is one of the most active ransomware groups, having claimed 18 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the U.S. Electrical Services and Wiedenbach Brown ransomware attack occur?

The ransomware attack on U.S. Electrical Services and Wiedenbach Brown was disclosed on September 21, 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 U.S. Electrical Services and Wiedenbach Brown ransomware attack?

The specific data stolen from U.S. Electrical Services and Wiedenbach Brown 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. As a Energy & Utilities organisation, U.S. Electrical Services and Wiedenbach Brown likely held sensitive business data, client information, and operational records.

How can organisations protect against Moneymessage attacks?

To defend against Moneymessage 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.