Rhysida attacks Eska
Date:
July 27, 2023
Overview
Title
Rhysida attacks Eska
Victim
Eska
Attacker
Rhysida
Location
Size of Attack
Unknown/TBD
First Reported
July 27, 2023
Last Updated
October 31, 2022
The Rhysida ransomware gang has attacked Eska. Eska is an electrical fuse manufacturer headquartered in Kassel, Germany. Rhysida posted Eska to its data leak site on July 28th, threatening to publish an unspecified amount of stolen data if the organization fails to pay a 5BTC ransom. The Rhysida ransomware group emerged in May 2023 and introduced a victim support chat portal on the TOR network. They present themselves as a "cybersecurity team" and claim to be helping their victims by targeting their systems and exposing potential security issues. Rhysida deploys its ransomware through various methods, including Cobalt Strike or similar frameworks, as well as phishing campaigns. Analysis of Rhysida ransomware samples suggests that the group is still in the early stages of development. The ransomware lacks certain standard features in contemporary ransomware, such as VSS removal. However, the group follows the practices of modern multi-extortion groups by threatening to distribute the stolen data publicly. Upon execution, Rhysida displays a cmd.exe window and scans all files on local drives. Victims are instructed to contact the attackers using the TOR-based portal and their unique identifier provided in the ransom notes. The group only accepts payment in Bitcoin (BTC) and provides victims with instructions on purchasing and using BTC through the victim portal. Victims are also given an additional form on the payment portal to provide authentication and contact details to the attackers. The Rhysida ransom notes are written as PDF documents and placed in the affected folders on the targeted drives.
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