The latest ransomware group, Black Basta, has added capabilities for encrypting VMware ESXi virtual machines (VMs) on enterprise Linux systems.
Most ransomware organizations target ESXi virtual computers, which makes this method appropriate for an enterprise target. It’s also possible to encrypt several servers quickly with only one command.
Because many firms have shifted to virtual machines in recent years, encryption of virtual machines makes sense. It makes device administration easier and resource utilization considerably more efficient.
Another Ransomware Group Targets ESXi Servers
Uptycs Threat Research analysts have uncovered a new Black Basta ransomware file that targets VMWare ESXi systems, according to a recent report.
In addition to LockBit, HelloKitty, BlackMatter, REvil, AvosLocker, RansomEXX, and Hive, BleepingComputer has discovered numerous other gangs, including LockBit, HelloKitty, BlackMatter, REvil, AvosLocker, RansomEXX, and Hive. We’ve previously covered comparable encryption technologies that have been released.
The Black Basta ransomware program, like other Linux encryption software, looks for virtual machines on infected ESXi hosts in the /vmfs/ volume (if no such folder is found, the ransomware terminates).
According to BleepingComputer, there are no command line parameters that target additional pathways for encryption, implying that this encryptor is intended for ESXi servers.
The ChaCha20 algorithm is used to encrypt files by ransomware. Multi-threading is also used to speed up the encryption process by utilizing multiple CPUs.
The ransomware appends the extension.basta to the names of encrypted files and produces a readme.txt file in each folder during encryption.
A link to a chat support panel is included in the note, as well as a unique ID that the victim can use to contact the attacker.
Black Basta Linux ransom note (BleepingComputer)
Uptcys’ Siddharth Sharma and Nischay Hegde said, “Black Basta was initially spotted in April of this year, and its variations targeted Windows PCs.”
“We believe the perpetrator behind this campaign is the same one who previously targeted Windows PCs with the Black Basta ransomware, based on chat support links and encrypted file extensions.”
Active since April
“The variations of Black Basta were initially spotted in April of this year, and they targeted Windows PCs,” stated Uptcys’ Siddharth Sharma and Nischay Hegde.
“We believe the actor behind this campaign is the same as the one who previously targeted Windows PCs with the Black Basta ransomware, based on the chat assistance URLs and encrypted file extensions.”
Other Ransomware gangs (other than the one revealed here), according to Fabian Wosar, CTO of Emsisoft, have developed and utilize their own Linux encryption techniques, he claimed. According to Wosar, “most ransomware gangs have created Linux-based variants because they primarily target ESXi.”
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