BianLian attacks Bolidt
Date:
November 21, 2023
Overview
Title
BianLian attacks Bolidt
Victim
Bolidt
Attacker
BianLian
Location
Size of Attack
Unknown/TBD
First Reported
November 21, 2023
Last Updated
October 31, 2022
Bolidt in the Netherlands has been added to the BianLian ransomware group's data leak site. The group claims to have obtained 1.6 TB of data, including finance data, employees' confidential information, clients' and customers' confidential data, trade secrets such as formulas, and internal email correspondence. All of the exfiltrated data has been reported as leaked. Bolidt is a specialist in synthetic applications. The company's mission is to replace traditional materials in order to make a contribution to a better living and natural environment in the areas of safety, sustainability, energy & data, design and hygiene. BianLian is not a traditional RaaS. They first emerged in June 2022 as a typical RaaS provider with Golang-based ransomware until a decrypter was released. In early 2023 they appear to have abandoned the ransomware payload portion of attacks in favor of less complicated data exfiltration and extortion attacks. This shows how successful the double extortion strategy is for ransomware groups, and we will likely see more groups join the likes of BianLian (and Karakurt before them). BianLian leverages open-source tooling and command-line scripts to engage in credential harvesting and data exfiltration. BianLian increased attack volumes as they have moved away from deploying ransomware payloads in favor of pure data extortion attacks, making them one of the more prominent groups in Q1-2023, although still lagging far behind leaders. It is unclear how much BianLian typically requests for a ransom amount or if they are keen to negotiate the demand down. BianLian successfully attacked several high-profile organizations before a free decryption tool was released to help victims recover files encrypted by ransomware. The group appears to have abandoned the RaaS model in favor of pure data extortion attacks where data is exfiltrated and ransom demand issues, but no ransomware is deployed. BianLian has been observed deploying a custom Go-based backdoor for remote access. BianLian uses PowerShell and Windows Command Shell to bypass and evade security solutions. BianLian primarily targets financial institutions, healthcare, manufacturing, education, entertainment, and energy sectors by leveraging compromised Remote Desktop Protocol (RDP) credentials. Almost exclusively a data extortion attack group now, rarely observed deploying ransomware payloads.
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