buran

General

Target

9403.js
Size

345KB
Sample

210831-ayvc4rd3e6
MD5

eea189749c6dcf6c8c04205ab60bb53c
SHA1

62ddf57299772f737a0ed6b5cc128e6357eea2c8
SHA256

70ec3d6d6a6978bd21bd40b4e3e3a569d48b05fac0a7a8765753704d4197bfa2
SHA512

f0c4f1e2ab43eb984f84abcf36075976f2f2be8e4e87f24c821ddfa076638a7271bb6278f8857bb18113034a6bb89fcf2a2a1c3e3b6b6a39b9536facee985d4e

Score

10^/10

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://jolantagraban.pl/log/57843441668980/dll/assistant.php

Extracted

Path

C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT

Family

buran

Ransom Note

!!! ALL YOUR FILES ARE ENCRYPTED !!! All your files, documents, photos, databases and other important files are encrypted. You are not able to decrypt it by yourself! The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. To be sure we have the decryptor and it works you can send an email: [email protected] and decrypt one file for free. But this file should be of not valuable! Do you really want to restore your files? Write to email: [email protected] Reserved email: [email protected] Reserved email: [email protected] Your personal ID: 49A-B0B-A4F Attention! * Do not rename encrypted files. * Do not try to decrypt your data using third party software, it may cause permanent data loss. * Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Emails

[email protected]

Targets

- Target
  
  9403.js
- Size
  
  345KB
- MD5
  
  eea189749c6dcf6c8c04205ab60bb53c
- SHA1
  
  62ddf57299772f737a0ed6b5cc128e6357eea2c8
- SHA256
  
  70ec3d6d6a6978bd21bd40b4e3e3a569d48b05fac0a7a8765753704d4197bfa2
- SHA512
  
  f0c4f1e2ab43eb984f84abcf36075976f2f2be8e4e87f24c821ddfa076638a7271bb6278f8857bb18113034a6bb89fcf2a2a1c3e3b6b6a39b9536facee985d4e
Score

10^/10

buran persistence ransomware
- Buran
  Ransomware-as-a-service based on the VegaLocker family first identified in 2019.
  ransomware buran
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware
- Blocklisted process makes network request
- Executes dropped EXE
- Modifies extensions of user files
  Ransomware generally changes the extension on encrypted files.
  ransomware
- Adds Run key to start application
  persistence
- Enumerates connected drives
  Attempts to read the root path of hard drives other than the default C: drive.
- Legitimate hosting services abused for malware hosting/C2
- Looks up external IP address via web service
  Uses a legitimate IP lookup service to find the infected system's external IP.
behavioral1 behavioral2