Black Basta v2
Decryptor Available
Yes
Description
For more information, please see the entry on Black Basta.
As you can probably guess, Black Basta v2 is the second iteration of the Black Basta ransomware. It appeared sometime in November 2022. It could be argued that it's the third or fourth considering that the first known samples were titled "no_name_software" and were the first samples created by the group based on compilation times and debugging behaviors upon execution. They also made a Linux encryptor for VMware ESXi servers, which we found a handful of and listed among the samples in the Black Basta entry. The Black Basta v2 ransomware targets Windows systems and has a few different characteristics than its predecessor.
The most obvious difference is the name of the ransom note. Instead of "readme.txt," the group changed the ransom note name to "instructions_read_me.txt." They also altered the encryption mechanism to encrypt files. Initially, it was a combination of ChaCha20 and RSA-4096. This time, it uses a different combination - XChaCha20 and the NIST P-521 elliptical curve algorithm, respectively. Another technical difference is the file extension used. Black Basta used the stereotypical self-named file extension on encrypted files - ".basta." Now, the file extension is a random 9-letter alphanumeric sequence.
Otherwise, most of the other details about Black Basta v2 are similar to Black Basta, including the same extortion page, Ransomware-as-a-Service approach, and threat actors such as QBot to begin their breaches. However, the authors implemented increased command-line flexibility, including variability in the number of threads used, mutex creation, and path specification.
Ransomware Type
Crypto-Ransomware
HumOR
RaaS
Country of Origin
Russia
First Seen
Lineage
Threat Actors
Tipo
Actor
Cybergroup
Wizard Spider
Cybergroup
Carbon Spider
Cybergroup
Storm-0506
Affiliate
GOLD CABIN
Affiliate
GOLD LAGOON
Extortion Links
Medio
Link
TOR
http://stniiomyjliimcgkvdszvgen3eaaoz55hreqqx6o77yvmpwt7gklffqd.onion
Extortion Types
Direct Extortion
Double Extortion
Give Mercy
Communication
Medio
Identificativo
TOR
https://aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.onion
TOR
https://bastad5huzwkepdixedg2gekg7jk22ato24zyllp6lnjx7wdtyctgvyd.onion
Encryption
Type
Hybrid
Files
XChaCha20
Key
NIST P-521
File Extension
<file name>.<9 random alphanumeric characters>
Ransom Note Name
instructions_read_me.txt
Ransom Note Image
Samples (SHA-256)(107)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350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd
350c0ce91d971244486710407b8991b54317c861e7a1a298d02aedefa19b37eb
3e058006a554e891708f3098bb8d9884ff976c2005722f527fa896983bc27c5a
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5626e39dfce62c25f69aa2c974fc986a0c7bbe2859f5a5551ecba3ee043cee4b
5c6c40ddb666fe8b3a85fef39b6594337ebc6607b5eb9a4f16a62efc4402a0cb
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5dcbec6d3370a2af103500325279d0c4f53df4c5a0c85b20a467797e61cb75ae
5ed057e99aed8356ccdf698f38fd3fe9ceabe517e1bd3245479fdd3cbb966fa9
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6264cae0ef62128667a295aef7154f4feb22dbfe53fc09fd01d122e01d43995e
640b73de1e37ac2b232793ff996dfcca41b74875d3aff2074c066b2c8e378b2b
645a18f737bd6d810a48c4a47ace62c196eb1ef285f8ca9bea6218b312fff16e
64921e6be1c8f44fddc6075621357496561924acecce48b73a243d5534c8d36e
6b7d80a4e6b7b6d2a74f135313473415ecbbd7382688d0b536a7df6a7ccb2bab
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764b1117262d33f0a69b4f4c72fad607b7c71c262f60b9b2b35a21e7f4967786
7ab838960858870eaf2701a737411c6a65e00077136d938f4ef736b3c949833d
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fff35c2da67eef6f1a10c585b427ac32e7f06f4e4460542207abcd62264e435f
Decryptors
References & Publications(6)
Rewterz:
Emerging Black Basta Ransomware 2.0
Secureworks:
GOLD LAGOON
Security Intelligence:
The Trickbot/Conti Crypters: Where Are They Now?
Zscalar:
Back in Black... Basta