maritimebank.com Listed by werewolves Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

Ransomware groups continue to single out financial institutions as high-value targets, combining data theft with public pressure on leak sites. In late September 2023, the group known as werewolves listed maritimebank.com among its claimed victims, adding another entry to the steady stream of banking-sector incidents reported that year.

Public detail on the incident remains limited. What is known comes chiefly from the group’s own listing and a reported summary that describes internal files said to have been taken in a ransomware attack. The number of people affected has not been established, and independent confirmation of the full scope has not been published.

Breaking down the breach

On 27 September 2023, maritimebank.com was reported as listed by the werewolves ransomware group. According to the available summary associated with that listing, the actors claim to have exfiltrated internal files during a ransomware attack. The same material asserts that 120 TB of data would be published and that the cost of non-disclosure stood at 1 000 000 dollars at the time of the listing. No independent verification of the volume, the ransom figure, or the precise method of intrusion has been supplied in the public record. The number of individuals affected remains unknown, and the exact timeline of the intrusion itself has not been disclosed beyond the September 2023 reporting date of the listing.

The listing frames the event as a classic double-extortion operation: data removal followed by a threat to release the material unless payment is made. Beyond those claims, technical indicators, initial access vector, and any containment steps taken by the organisation are not part of the publicly available facts.

The group behind it: werewolves

Werewolves is a ransomware operation that has appeared on public leak sites in connection with multiple victims. Like other groups in this category, it typically combines encryption or the threat of encryption with the exfiltration of data, then advertises the stolen material to increase pressure. Public reporting on the group’s activity has described the use of leak-site posts that name organisations, sometimes accompanied by sample files or volume claims, and the setting of ransom demands denominated in cryptocurrency or dollars.

In this instance the group claims that maritimebank.com data was taken and that a large volume would be released. Those statements remain attributions to the actors’ own channel; they have not been independently corroborated in the facts provided. No additional statements by werewolves specifically about this victim, beyond the listing and the accompanying summary, are recorded here.

Who is maritimebank.com?

Maritimebank.com corresponds to МОРСКОЙ БАНК (АО), a Russian financial institution that, according to the material associated with the listing, has operated for 34 years. The bank was founded on 29 March 1989 by state bodies and enterprises in the maritime and river-transport sector to provide specialised banking services to that industry. As a long-established commercial bank it would ordinarily hold customer account records, transaction histories, corporate and personal identifying information, internal operational documents, and systems data typical of a regulated financial entity.

A breach affecting a bank is consequential because the institution sits at the centre of payments, credit, and client financial relationships. Even when the precise contents of a theft remain unconfirmed, the mere claim that internal files have left the organisation raises questions about confidentiality obligations, regulatory notification duties, and the potential for secondary misuse of any authentic records that may have been taken.

What was likely exposed

The facts name the exposed material only as “internal files exfiltrated in a ransomware attack.” No further inventory—customer lists, account numbers, identity documents, or specific database names—has been published in the record supplied. The group’s summary asserts that 120 TB of data would be released; that figure is a claim by the actors and has not been independently verified here.

Organisations of this type commonly store customer personal data, account and transaction records, internal correspondence, credit and compliance files, and technical configuration material. Whether any or all of those categories were among the files taken remains unconfirmed. Readers should treat any concrete description of the contents as unverified until corroborated by the bank or by competent authorities.

The real-world impact

For individuals whose information may have been involved, the principal risks are the classic consequences of financial-data exposure: targeted phishing that references genuine account details, attempts at identity fraud, and unsolicited contact that leverages knowledge of banking relationships. Because the number of people affected is unknown and the exact data types are undisclosed, it is not possible to quantify how widely those risks apply.

For the organisation, a public ransomware listing can trigger regulatory scrutiny, contractual notification obligations to clients and partners, and reputational damage regardless of whether a ransom is paid. Operational disruption, forensic and recovery costs, and the longer-term expense of strengthening controls are typical follow-on effects even when the full technical picture stays private. None of these outcomes has been detailed in the public facts for this specific case; they are the ordinary consequences observed across comparable incidents.

Were you affected?

If you hold or have held accounts or other relationships with Maritime Bank, monitor account statements and credit activity for unfamiliar transactions, and treat unsolicited messages that reference the bank or this incident with caution. Change passwords on related online services if you reuse credentials, and enable multi-factor authentication where it is offered. Consider placing fraud alerts with relevant credit-monitoring services if you are concerned about identity misuse.

You can also run a free exposure scan of your email address to check whether that address has already appeared in known breach data sets. Such a scan does not confirm or deny involvement in this particular incident, but it can indicate whether your details have surfaced elsewhere and help you prioritise further protective steps.

AICompiled with AI assistance from public sources and published under our editorial standards.