buran

General

Target

3346.zip
Size

319KB
Sample

210811-al1kb163g2
MD5

6744b64d318cfeea92c755301cb93a95
SHA1

dc8acdc92897111d6322b1eb016793f944ebcc39
SHA256

84825c5810241c7a092119d19b92165b11774135d9557d7c54212bd6ccaa5a24
SHA512

893b8b1026ccd8f0e4b3497b78b7577322f57ddb77cdfa3431b2b7f7523940a39b9d0d772eebf4a1684f2159f5b44b704c4f6b2a1d8a0f4da8caa4afa8050e86

Score

10^/10

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://erzurum.us/65376345273497600381/tjTyjrjywrdmJoaaenvF/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: 12B-343-43A 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
  
  3346.js
- Size
  
  530KB
- MD5
  
  7e23a9a840725f3431ef5825c6ab6839
- SHA1
  
  b9f307ac96ded5c42d931f7c4355756164ca0123
- SHA256
  
  09eeec589e425f4da6dc1587e49f7f32c17f4c9e026b10c2360e5b3f72699ca7
- SHA512
  
  51f027140d19f3b493d91a664d4c8bf2514b38c210f28178948a21d56fcde0ed99a068d7c0d04b9b3012ad03fc5be6e88d8e0f78aeb55bb919a2170a7e47da92
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
- Downloads MZ/PE file
- Executes dropped EXE
- 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