Analysis

  • max time kernel
    143s
  • max time network
    114s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-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.

  • 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 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:4440
    • C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
      "C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1208
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\91cdf799-50a1-4918-9445-81594792f183" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1224
      • 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:2168
        • C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
          "C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2600

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

    e91ab60736e7fd57b14a1be02a45fa57

    SHA1

    43364689a7c8afd6207360d0f7733a83591dd32b

    SHA256

    c3cf903404938336567945b3ba459c44cb4e9c96bcf5fd472a7be347b59508ed

    SHA512

    c98abf7f546338c5d8bf69da7218aa0e6e640d7021947e736942547a2085c85320ca6e9f220e9f1d77b2c1c995e698ae36cfc56ef844663ebf8d0738f33dca1a

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

    Filesize

    392B

    MD5

    9885af92b72b49ec7ee1e9450de91e31

    SHA1

    42ece4c7ab99c0bd30bd9ac2302cedd14191ce8a

    SHA256

    702b73212d82d94e3e0e0b02ed560c83409640d3fda200c2e21f67d37c854c1e

    SHA512

    60a3d96499bad3b41e8e60ad580d47d8abc8d790e62ca46313564313a23fcdb4423e4e4f3e394b080cbcd65ff3174b14de08265f766260812f098039ecf250db

  • C:\Users\Admin\AppData\Local\91cdf799-50a1-4918-9445-81594792f183\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe

    Filesize

    819KB

    MD5

    3e2828108fe38b09181ea613e630edb2

    SHA1

    aac8e6bd8bba210aa59621fcc88213e181873ec6

    SHA256

    55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76

    SHA512

    5e12d56a995c01786f12547c7e5c02e03ed74a27c6f18ccb28d8751875416cf66509ba09e461b78b113241a023a8e69ef4e4a8df73689323cb33173d1b09e558

  • memory/1208-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1208-15-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1208-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1208-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1208-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2168-18-0x0000000004A40000-0x0000000004AD3000-memory.dmp

    Filesize

    588KB

  • memory/2600-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4440-2-0x0000000004A70000-0x0000000004B8B000-memory.dmp

    Filesize

    1.1MB

  • memory/4440-1-0x00000000049D0000-0x0000000004A6F000-memory.dmp

    Filesize

    636KB