Analysis

  • max time kernel
    145s
  • max time network
    128s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    15/04/2024, 19:26

General

  • Target

    55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe

  • Size

    819KB

  • MD5

    3e2828108fe38b09181ea613e630edb2

  • SHA1

    aac8e6bd8bba210aa59621fcc88213e181873ec6

  • SHA256

    55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76

  • SHA512

    5e12d56a995c01786f12547c7e5c02e03ed74a27c6f18ccb28d8751875416cf66509ba09e461b78b113241a023a8e69ef4e4a8df73689323cb33173d1b09e558

  • SSDEEP

    12288:QX4mOhkzKf0FUwTEPDk4R27BQSKzWgux/1GBjYo7P6qifkinhKgDqicMwWtooL:QXNFdaSEWxNF6K/nhKgDNcwooL

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .uazq

  • offline_id

    Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1

  • payload_url

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

    http://sajdfue.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/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0860PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • 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 3 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\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
    "C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:228
    • C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
      "C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3580
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\8139baff-acbe-4a61-a438-c8e174823f4c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2204
      • C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
        "C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3648
        • C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
          "C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4828

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    1KB

    MD5

    3c6a98dff2c8e5d41183fb934602bccf

    SHA1

    389eea4f6c8b9a19dd6efd65b2c979feeb4262a7

    SHA256

    8c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8

    SHA512

    fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    724B

    MD5

    8202a1cd02e7d69597995cabbe881a12

    SHA1

    8858d9d934b7aa9330ee73de6c476acf19929ff6

    SHA256

    58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

    SHA512

    97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    410B

    MD5

    d6ce54e8befb2ffcc06141beb5c4fef5

    SHA1

    2045642322333bf2fbe6997900a1d6b729c6d284

    SHA256

    3e0d549a17fb65712518918cf113810972d491c303cda7acc80ff3324d9365b9

    SHA512

    ecf7431c30367c5a475dc160ca37a52c5924bd932e7005f466c3035a7f8c6b9198268a7fb158f0b6d5d22a8e2d68e330987291951c6c8e708b8e6bc57767b074

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    392B

    MD5

    ec512ccb4ab710e350df0800678de7df

    SHA1

    98351a9f7f118bb6c7935d81698da29f7c70838c

    SHA256

    9d582d44f37afa569ecef47bc03a5160bd9823173a0e2cdf4c95db2332f9e04c

    SHA512

    0ba5e506190cb1a7041cb66b92ce1572cf9022006a49d1c0bbe90c790d4c5186b477dbed7fe8699323d333823639a776fdc0542551aa08a8e139076d5a972b55

  • C:\Users\Admin\AppData\Local\8139baff-acbe-4a61-a438-c8e174823f4c\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe

    Filesize

    819KB

    MD5

    3e2828108fe38b09181ea613e630edb2

    SHA1

    aac8e6bd8bba210aa59621fcc88213e181873ec6

    SHA256

    55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76

    SHA512

    5e12d56a995c01786f12547c7e5c02e03ed74a27c6f18ccb28d8751875416cf66509ba09e461b78b113241a023a8e69ef4e4a8df73689323cb33173d1b09e558

  • memory/228-1-0x0000000004BF0000-0x0000000004C85000-memory.dmp

    Filesize

    596KB

  • memory/228-2-0x0000000004C90000-0x0000000004DAB000-memory.dmp

    Filesize

    1.1MB

  • memory/3580-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3580-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3580-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3580-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3580-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3648-20-0x0000000004AB0000-0x0000000004B51000-memory.dmp

    Filesize

    644KB

  • memory/4828-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4828-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4828-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4828-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4828-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4828-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4828-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4828-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4828-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4828-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4828-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB