Analysis

  • max time kernel
    148s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    25-04-2024 01:09

General

  • Target

    200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe

  • Size

    780KB

  • MD5

    4b2fb93459b4e03686148d0a1d3c1f00

  • SHA1

    b16c9e43f7389ba51e1423f676cc61d9ec9d4354

  • SHA256

    200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64

  • SHA512

    31caad1014245fb375ecaefa11bdacdbf8e661acedf3411f75310e4e8dcf8f9ce8ec11ec17719677fe77afbb3036de07811c4309dbd9251c04edff017947e224

  • SSDEEP

    12288:5O9ISzaeV1oie7CIXYEEsB7HBDGsqQuXpLyQVbDDzQBlFz+0Zdqbmw3q2MFC:5O7aezoB7/o5sBM/vRD8lFzzdeFtMFC

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 14 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).

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
    "C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:836
    • C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
      "C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2208
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\b37effd2-bbe4-4252-8100-6947d0086bdb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2784
      • C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
        "C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2724
        • C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
          "C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          PID:2720

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

    f8ed6292d6d2f9514668acec50849d17

    SHA1

    482745d97c48b32fd986e488d169ac4eb7edd737

    SHA256

    a7760866eaf849b079815652f9dce9eb9ec7c599199bc65c7030ca9e2ed91c26

    SHA512

    ebc265c4a27c4a1d14ef783b28f3cb0de9ca4f28795078c3d80bf2ec6574c4e8f3f3c7c68197b1ea6f037cb88268cfab99817660f442696167120bc6275cad4f

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • 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\Content\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    1KB

    MD5

    a266bb7dcc38a562631361bbf61dd11b

    SHA1

    3b1efd3a66ea28b16697394703a72ca340a05bd5

    SHA256

    df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

    SHA512

    0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

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

    Filesize

    410B

    MD5

    64bad4c5424d0121ef1b57df45227b77

    SHA1

    1c60778cbae6fe4e548ca95f8b1bfecf070b4e4a

    SHA256

    7ed6cf1aec5aa65853b60bc04e651786a45778d5b69ef44afa67aedfa99f4c7b

    SHA512

    225cf3c922625d318c5ff18b3cb17a752ef371688bf03339cf7f37ab4fa4f214e19bd3894b31036885f548b7ddbac24e7401d5b98ffc1d90c1d4fc301ffff5e3

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    4dbc66d3a3c456901168caf582a1fae0

    SHA1

    29812d53f1378e2fff98364c363b9975dea96524

    SHA256

    3d8c41e6df7a6c82e92e83757e46a220f64e503a46e4ac5614fe35cfbc8af5dd

    SHA512

    9561398bcbbf26f12481b3bbbd2f201b4c53fa22fa0471300694b27f73962eee363e2c4554c36a2f037ceec7865305a3b46056bf0a5d61cf3950813272d3b59a

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

    Filesize

    392B

    MD5

    9d6cc7eec56fe375c61d62790ae91e8e

    SHA1

    9d308b722c2c267a1fe83fb8b217e4fead6708a6

    SHA256

    df9a2f6a2020dbe80021447882b69c1ab023575c42ed572f93c1b136a4d1066d

    SHA512

    3a10467e9aad227d3ed722ffa71610febbba994c0aa40f879cf33dbcaf7f6fbbf420f3cebeff901e7967fb29c9123b481813bdf82282387dd8133cf32eda5dbe

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    242B

    MD5

    3b42de49876e2940f152673f248b24f2

    SHA1

    1ba34029eba393362256f6659c13c915a49a1ce1

    SHA256

    169d6434598d1f73e35acfa2704fccf7318985cf2a9b503e895ad1eb49e5f3ce

    SHA512

    13fdcef81fae72da2895fee59cfedad0c098141ce44b47fd813fcf720a5922bc6ac7e7457cc90c9102655e043cabbcc70f03d575faa86bc942abca3bbd5cc313

  • C:\Users\Admin\AppData\Local\Temp\Tar27CD.tmp

    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

  • C:\Users\Admin\AppData\Local\b37effd2-bbe4-4252-8100-6947d0086bdb\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe

    Filesize

    780KB

    MD5

    4b2fb93459b4e03686148d0a1d3c1f00

    SHA1

    b16c9e43f7389ba51e1423f676cc61d9ec9d4354

    SHA256

    200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64

    SHA512

    31caad1014245fb375ecaefa11bdacdbf8e661acedf3411f75310e4e8dcf8f9ce8ec11ec17719677fe77afbb3036de07811c4309dbd9251c04edff017947e224

  • memory/836-0-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/836-2-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/836-4-0x00000000040C0000-0x00000000041DB000-memory.dmp

    Filesize

    1.1MB

  • memory/2208-44-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2208-7-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2208-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2208-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2208-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2720-69-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2720-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2720-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2720-70-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2720-71-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2720-74-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2720-76-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2720-77-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2720-78-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2724-47-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/2724-45-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB