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Analysis

  • max time kernel
    148s
  • max time network
    88s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/04/2024, 15:44

General

  • Target

    6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f.exe

  • Size

    702KB

  • MD5

    1e09f1352687fedf7b01243712c51af5

  • SHA1

    d20da181cdba8e27413dd21b7c3364d3035d19fc

  • SHA256

    6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f

  • SHA512

    ee38bff074e9f2235c63a9c4945d9c34b1cf62c08c0e325117dd01106b8bfaf0beb526fe100b6fb99b0fc737aadf1ae08587f5e3779dbe89603c636a096b0fdf

  • SSDEEP

    12288:OF3pjIcp1AnPZdIqNLegRYiHTftuL3l0SARntBztEkOdWr1CSOal1b/:83pjfp62gO7qSuB5edu0aLb/

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes
  • extension

    .bgzq

  • offline_id

    Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1

  • payload_url

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

    http://cajgtus.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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0864PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 16 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f.exe
    "C:\Users\Admin\AppData\Local\Temp\6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1576
    • C:\Users\Admin\AppData\Local\Temp\6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f.exe
      "C:\Users\Admin\AppData\Local\Temp\6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4632
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\ed779cf5-f713-4614-8d25-430c8dfcdb8d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4788
      • C:\Users\Admin\AppData\Local\Temp\6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f.exe
        "C:\Users\Admin\AppData\Local\Temp\6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3824
        • C:\Users\Admin\AppData\Local\Temp\6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f.exe
          "C:\Users\Admin\AppData\Local\Temp\6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\ed779cf5-f713-4614-8d25-430c8dfcdb8d\6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f.exe

    Filesize

    702KB

    MD5

    1e09f1352687fedf7b01243712c51af5

    SHA1

    d20da181cdba8e27413dd21b7c3364d3035d19fc

    SHA256

    6d93f4d47ed5e0a4c86ba98060ce666d3f4ff67cf574d6d3e1b9a196f11dad4f

    SHA512

    ee38bff074e9f2235c63a9c4945d9c34b1cf62c08c0e325117dd01106b8bfaf0beb526fe100b6fb99b0fc737aadf1ae08587f5e3779dbe89603c636a096b0fdf

  • memory/1576-1-0x0000000004830000-0x00000000048CB000-memory.dmp

    Filesize

    620KB

  • memory/1576-4-0x00000000048D0000-0x00000000049EB000-memory.dmp

    Filesize

    1.1MB

  • memory/1908-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1908-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1908-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1908-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1908-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1908-15-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1908-16-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1908-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1908-18-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1908-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4632-2-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4632-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4632-12-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4632-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4632-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB