Overview

overview

10

Static

static

8661.js

windows7_x64

10

8661.js

windows10_x64

10

Sharing

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General

  • Target
    8661.js
  • Size 282KB
  • Sample210809-wab1tkk982
  • SHA256 3483446bca695be12b37d2e5bb78e751afe9be3bb52945835d966696e356a65b
  • MD5 SHA1 SHA512
Score
10/10
buranpersistenceransomware

Malware Config

Extracted

Language

  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    https://erzurum.us/65376345273497600381/tjTyjrjywrdmJoaaenvF/dll/assistant.php

Extracted

Path

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

  • 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: 15D-117-5EA 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.

Targets

    • Target
      8661.js
    • Size 282KB
    • SHA256 3483446bca695be12b37d2e5bb78e751afe9be3bb52945835d966696e356a65b
    • MD5 SHA1 SHA512
    Score
    10/10
    buranpersistenceransomware

    • Buran

      Ransomware-as-a-service based on the VegaLocker family first identified in 2019.

      ransomwareburan

    • 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.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks