Analysis

  • max time kernel
    400s
  • max time network
    365s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    15/01/2024, 19:09

General

  • Target

    ransomware.exe

  • Size

    709KB

  • MD5

    d2243b032f9b9226d85de43b5b88480d

  • SHA1

    7643fc0978122e1862d855af3c2b066c715beacd

  • SHA256

    b5ebf4054d626e0602fd52c351ffba4c7c43f06d61c9e590c4f4bd77347094d7

  • SHA512

    c2561dbb57fe48a6591a70b3ab48de866013f8d03f5b18356a7304f546b0b852097ff6800f98ab319929089631d59eef00384f6619fb4a271c31b22b54f87b75

  • SSDEEP

    12288:f6aD7FoQiBMyk5EYvgPZfJGrFWCyYTI84EPSW+z7AuLQ59GnIZvmZHst9HhUUX:hPFoQiBMf5EYYDYFBCNEaWyLQ93v2Hkd

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .cdmx

  • offline_id

    mMsRxMUuXypapZbGOAfxD9pczHmW8zVRP7Pgjwt1

  • payload_url

  • 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. You can get and look video overview decrypt tool: https://we.tl/t-99MNqXMrdS Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0841ASdw

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).

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\ransomware.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2052
    • C:\Users\Admin\AppData\Local\Temp\ransomware.exe
      "C:\Users\Admin\AppData\Local\Temp\ransomware.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2136
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\3e477050-408b-434d-bc33-51a172a72895" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2756
      • C:\Users\Admin\AppData\Local\Temp\ransomware.exe
        "C:\Users\Admin\AppData\Local\Temp\ransomware.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2596
        • C:\Users\Admin\AppData\Local\Temp\ransomware.exe
          "C:\Users\Admin\AppData\Local\Temp\ransomware.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2624

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

          10bc1463c2326403e6e2a83112554add

          SHA1

          554df3e5bd0842d1d5be8331bf765b6f6ccd0afe

          SHA256

          a2b62727608d9216237a6608a2e995c28d3656b72c06ee0b651878f26df7e8ff

          SHA512

          6ba098756dec7fd32d25c208ced685781b78e125d0302af91ef2478793169f7a9d5a34219f5bdd83fcc16c64dbd2bf70e190ad482ddb9d878be32b10110f0d5c

        • 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

          b7893834c86539de3d522fd5553431d6

          SHA1

          f3f88f5f7fded3240cc92b8167933e486e36cd31

          SHA256

          2440a272a86e772f8f0d2fc777c59a748108e481e4e693dc43b8548e6626312c

          SHA512

          e3f7d7684b2e6887afbe2598aa2bea2b13a2e2b0a71fdab034802e79b8fa8a02192690df008fae08fb5d0e1796e83123969f0ee42aa2b9b463cb9bce04251dda

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

          Filesize

          344B

          MD5

          463c9cb85eb0c75fed7a1f75ab33f79f

          SHA1

          f624d3890cea67b5374dced140001a688387a0ec

          SHA256

          a4923caa0ee37d6f42beed2ea8f6236517f9de8b04236e063b5b26393033bf88

          SHA512

          ad215ad2df5b2646eb34c3f888b3070be5e8b1eca4ebd88bcdb63b599e3adb9c0a5af24e0411275be26abddd588d7c77eef98af6a988d737ae219fa5183a7dc7

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

          Filesize

          392B

          MD5

          405efb4b43a4fbeae1f274e4693803a2

          SHA1

          be0c61515c3f44dfaef80b7997049b276b0d36ab

          SHA256

          d080da539c8b1e3fb09dc9f65ff4b9d347e60bc08b26de65adbc4782b398eec0

          SHA512

          20896f035918526b4275dcfb0ec891883e10156cb079fd829d86d96ec11e5940cf876c70e418f23b5d7c54c224b13db30768a830cf5baa66c5397cf3e7c7be2a

        • C:\Users\Admin\AppData\Local\3e477050-408b-434d-bc33-51a172a72895\ransomware.exe

          Filesize

          709KB

          MD5

          d2243b032f9b9226d85de43b5b88480d

          SHA1

          7643fc0978122e1862d855af3c2b066c715beacd

          SHA256

          b5ebf4054d626e0602fd52c351ffba4c7c43f06d61c9e590c4f4bd77347094d7

          SHA512

          c2561dbb57fe48a6591a70b3ab48de866013f8d03f5b18356a7304f546b0b852097ff6800f98ab319929089631d59eef00384f6619fb4a271c31b22b54f87b75

        • C:\Users\Admin\AppData\Local\Temp\Cab6C2B.tmp

          Filesize

          65KB

          MD5

          ac05d27423a85adc1622c714f2cb6184

          SHA1

          b0fe2b1abddb97837ea0195be70ab2ff14d43198

          SHA256

          c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

          SHA512

          6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

        • memory/2052-1-0x00000000008E0000-0x0000000000971000-memory.dmp

          Filesize

          580KB

        • memory/2052-2-0x00000000021D0000-0x00000000022EB000-memory.dmp

          Filesize

          1.1MB

        • memory/2052-7-0x00000000008E0000-0x0000000000971000-memory.dmp

          Filesize

          580KB

        • memory/2052-0-0x00000000008E0000-0x0000000000971000-memory.dmp

          Filesize

          580KB

        • memory/2136-8-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2136-27-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2136-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2136-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2136-9-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2596-28-0x00000000008E0000-0x0000000000971000-memory.dmp

          Filesize

          580KB

        • memory/2596-30-0x00000000008E0000-0x0000000000971000-memory.dmp

          Filesize

          580KB

        • memory/2624-35-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2624-36-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2624-49-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2624-51-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2624-52-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2624-54-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2624-57-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2624-56-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2624-58-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB