Analysis

  • max time kernel
    144s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17-10-2024 21:46

General

  • Target

    c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781.exe

  • Size

    757KB

  • MD5

    bd4d06f1e0139f61fed18f524e00ff59

  • SHA1

    8a8cf66f6ecd4b4591ab7839e7865c55d287e760

  • SHA256

    c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781

  • SHA512

    ca3f80d45ed1f52f17f7b02827ff5e1a70d4cbe25274864fc5aa2445d0e77654feddaad8935e356eea5e043e2d71ec513daf3466df8030eac7c69aefc73f9fbb

  • SSDEEP

    12288:QLMAH6P93Sr/C3XgEs4vkTZNt4Qtz+8rEL61rR9N0xUYsHF:PTPwr/CAbx/QL61tJYsl

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .bgzq

  • offline_id

    Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1

  • 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/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 13 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781.exe
    "C:\Users\Admin\AppData\Local\Temp\c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2364
    • C:\Users\Admin\AppData\Local\Temp\c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781.exe
      "C:\Users\Admin\AppData\Local\Temp\c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2008
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\cd777c88-9fb5-4473-a18b-17c0508af718" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:3032
      • C:\Users\Admin\AppData\Local\Temp\c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781.exe
        "C:\Users\Admin\AppData\Local\Temp\c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2628
        • C:\Users\Admin\AppData\Local\Temp\c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781.exe
          "C:\Users\Admin\AppData\Local\Temp\c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:3020

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    1KB

    MD5

    67e486b2f148a3fca863728242b6273e

    SHA1

    452a84c183d7ea5b7c015b597e94af8eef66d44a

    SHA256

    facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

    SHA512

    d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    d6e5c957f717b17accf8579fae1c02ec

    SHA1

    d35ac1d6a61903b7648b8da067e3f6f8c5ec8fd3

    SHA256

    80a29d8219d953349a78d0072beda0f526f02898d1bfa0bcc38e3fe39e4058e0

    SHA512

    b558e57a7bbda942ffda9caea2f8426307b394c3ceeb4c81ed75fb208325e94e943c250b7d273167ec52bf8dab9dcffc188bc7e893983c6b83847bf8a91858c6

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    170B

    MD5

    7f0a0caad15f62cf032bc2fd236ba40f

    SHA1

    fb3723cca67a0488b2ed6f0b59593861e9e9e616

    SHA256

    3b0346071423672b5a42c82e42d78731f77e7827fe97500448a3bcf6c4f3a5d9

    SHA512

    d379a34e8f765dbd0c5ae955c16cb864fd899dfe26f32e43b3796a0ac738dde9b0ef0f26d6c259a81bd7e7b16b577db7bdf27864e99b699fdf89b40470d80f98

  • C:\Users\Admin\AppData\Local\Temp\CabB7EA.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\cd777c88-9fb5-4473-a18b-17c0508af718\c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781.exe

    Filesize

    757KB

    MD5

    bd4d06f1e0139f61fed18f524e00ff59

    SHA1

    8a8cf66f6ecd4b4591ab7839e7865c55d287e760

    SHA256

    c4b93b302d810c73be3886dc8aa03c230adb8a5df3611bedfa92995412fe2781

    SHA512

    ca3f80d45ed1f52f17f7b02827ff5e1a70d4cbe25274864fc5aa2445d0e77654feddaad8935e356eea5e043e2d71ec513daf3466df8030eac7c69aefc73f9fbb

  • memory/2008-7-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2008-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2008-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2008-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2008-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-2-0x00000000059C0000-0x0000000005ADB000-memory.dmp

    Filesize

    1.1MB

  • memory/2364-1-0x0000000000310000-0x00000000003A2000-memory.dmp

    Filesize

    584KB

  • memory/2364-0-0x0000000000310000-0x00000000003A2000-memory.dmp

    Filesize

    584KB

  • memory/2628-28-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/3020-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-45-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB