Overview

overview

10

Static

static

3

2ceb3343bc...21.exe

windows7-x64

10

2ceb3343bc...21.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    2ceb3343bc2673461aadd7fc703bd421.exe
  • Size 256KB
  • Sample231215-x5hapsghgp
  • SHA256 d76730739de688d0598bba500856909a7800c26a2b09ffb2e111c385c6448d94
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
djvusmokeloaderup3backdoordiscoverypersistenceransomwaretrojan

Malware Config

Extracted

Family

  • smokeloader

Botnet

  • up3

Extracted

Family

  • smokeloader

Version

  • 2020

C2

  • http://host-file-host6.com/

  • http://host-host-file8.com/

rc4.i32
rc4.i32

Extracted

Family

  • djvu

C2

  • http://zexeq.com/test1/get.php

Attributes
  • extension

    .ljuy

  • offline_id

    B5moRKh7Z0xwbuNave594QPrrx2R2HOTp49pUFt1

  • payload_url

    http://brusuax.com/dl/build2.exe

    http://zexeq.com/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-mFyI2phKff Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0836ASdw

rsa_pubkey.plain

Targets

    • Target
      2ceb3343bc2673461aadd7fc703bd421.exe
    • Size 256KB
    • SHA256 d76730739de688d0598bba500856909a7800c26a2b09ffb2e111c385c6448d94
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    djvusmokeloaderup3backdoordiscoverypersistenceransomwaretrojan

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

      ransomwaredjvu

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

      trojanbackdoorsmokeloader

    • Downloads MZ/PE file

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks