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French-Talking Cybercrime Group Stole Hundreds of thousands From Banks

By Eduard Kovacs on November 03, 2022

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A French-speaking cybercrime group might have stolen greater than $30 million from banks and different forms of organizations prior to now years, in line with a brand new report revealed by cybersecurity agency Group-IB.

The risk actor is tracked by Group-IB as Opera1er. A few of its actions have been beforehand investigated by others, who’ve named it Frequent Raven, Desktop-Group, and NXSMS.

The cybersecurity firm is conscious of 30 profitable assaults carried out between 2019 and 2021 — in lots of instances the identical sufferer was attacked a number of occasions. A lot of the assaults focused African banks, however the listing of victims additionally contains monetary providers, cell banking providers, and telecoms companies. Victims have been noticed throughout 15 international locations in Africa, Latin America and Asia.

Group-IB has confirmed the theft of $11 million from victims since 2019, however believes the cybercriminals may have made greater than $30 million.

Opera1er assaults sometimes begin with a spear-phishing electronic mail despatched to a restricted variety of folks inside the focused group. The aim is to acquire entry to area controllers and banking back-office techniques.

As soon as they gained entry to a corporation’s techniques, the hackers waited for 3-12 months earlier than really stealing cash. Within the remaining section of the operation, the cybercriminals used the banking infrastructure to switch cash from the financial institution’s clients to mule accounts, from the place they might be withdrawn at ATMs by cash mules, sometimes over weekends and public holidays.

“In at the least two banks, Opera1er bought entry to the SWIFT messaging interface,” Group-IB defined. “In a single incident, the hackers obtained entry to an SMS server which may very well be used to bypass anti-fraud or to money out cash by way of cost techniques or cell banking techniques. In one other incident, Opera1er used an antivirus replace server which was deployed within the infrastructure as a pivoting level.”

Opera1er doesn’t seem to depend on any zero-day vulnerabilities or customized malware. They’ve been leveraging outdated software program flaws and broadly accessible malware and instruments.

Group-IB’s evaluation discovered that a lot of the attackers’ emails have been written in French — the corporate’s researchers decided that their English and Russian is “fairly poor”.

Primarily based on the oldest area registered by the group, Opera1er has been energetic since at the least 2016.

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