buran

General

Target

6440.js
Size

541KB
Sample

210831-hdfz8htfb6
MD5

268848cb4ff95f5b95a8c619b626eb1e
SHA1

1ba3890f085853d01475ddf9fa3d991dee706be6
SHA256

f827fc739c432960cabffffa30111ac512e019928c22ce6f55efca587bdb75bf
SHA512

07cfd18fa8ec70db0a1c0f061ee5c6951979bada17777dd30cc473ee0cb161882109920a8d46ca961d4626231d94b4bac85a52180c34ae90442d16d70192781c

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: 752-02C-F46 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
  
  6440.js
- Size
  
  541KB
- MD5
  
  268848cb4ff95f5b95a8c619b626eb1e
- SHA1
  
  1ba3890f085853d01475ddf9fa3d991dee706be6
- SHA256
  
  f827fc739c432960cabffffa30111ac512e019928c22ce6f55efca587bdb75bf
- SHA512
  
  07cfd18fa8ec70db0a1c0f061ee5c6951979bada17777dd30cc473ee0cb161882109920a8d46ca961d4626231d94b4bac85a52180c34ae90442d16d70192781c
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