Analysis

  • max time kernel
    145s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/04/2024, 08:02

General

  • Target

    c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe

  • Size

    771KB

  • MD5

    f797618d3ffd9c1240db9d52a9a977ac

  • SHA1

    51683323368d28657a2916a2c7bd0e5d3b2f2f7c

  • SHA256

    c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3

  • SHA512

    be0c7e88ca37fdc212033c70e527e99d939c62c0846a39e79c3f87d81fb1b9a38f5da835a41f6a3e73f3f1ea2fb0f1eb420a010edd78edfaf44c06595e921482

  • SSDEEP

    24576:e7cwUFF1eUyif8Wg5Mbc0MEK/Qt0N5AM:e7cYSg5M0p7NOM

Malware Config

Extracted

Family

djvu

C2

http://sajdfue.com/test1/get.php

Attributes
  • extension

    .uajs

  • 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: 0859PsawqS

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\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
    "C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2660
    • C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
      "C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3284
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\09c57500-5d82-435e-a9b5-1e24c1fce9bd" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3796
      • C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
        "C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2604
        • C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
          "C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4320
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1292 --field-trial-handle=2588,i,4353937220825226770,7138584070663735671,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4348

    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

            fc5408c48a55314c72e200b74330cac4

            SHA1

            7e8889ec3189a40e6078088927bf3612753fa628

            SHA256

            7ea2a016d97635b1367455af2250cbf9e9c34d293829d11fc21ce905347590c4

            SHA512

            481753ef755c188012919ea728ea0395f22b6ce83f2f9a11675be6072f154db141b2382dc62ad7c3c95e36596529176a66f40e3d118cf0e33ea8e6f716ae1d77

          • 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

            1d5428cf3b208036f12c8d69a1b2fa6d

            SHA1

            f37048b017910ca90e1851c21689b05b78996ec0

            SHA256

            c16039fb90770622fef3fa76bce5cee2a96e799de30e931f1a075e85a63d5444

            SHA512

            ee59ffe4ab18274d96d1035688a9574f13f3858397befa01082a729f922e6b509ad0a8d95da0b69abdea57e68c11a604184c95da5e6982966219fef8f4c23098

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

            Filesize

            392B

            MD5

            2d54fd29a0861e351e69e53652ec21e2

            SHA1

            61f42be74de7b7e819cc73f27ebd5286eb8330c8

            SHA256

            3062860eb8018fd2195354474806594c4ed30ab6970d3f078fe597cdbc56387f

            SHA512

            3f25bcfb5966f099acc7e3193ead5336603e4c160af84d27d78d207d96cca43b7b3bbdc2ab1e88245e32dfa626942493fbe0142c445d10a3d3e6ba0eba1e3542

          • C:\Users\Admin\AppData\Local\09c57500-5d82-435e-a9b5-1e24c1fce9bd\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe

            Filesize

            771KB

            MD5

            f797618d3ffd9c1240db9d52a9a977ac

            SHA1

            51683323368d28657a2916a2c7bd0e5d3b2f2f7c

            SHA256

            c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3

            SHA512

            be0c7e88ca37fdc212033c70e527e99d939c62c0846a39e79c3f87d81fb1b9a38f5da835a41f6a3e73f3f1ea2fb0f1eb420a010edd78edfaf44c06595e921482

          • memory/2604-18-0x00000000049A0000-0x0000000004A3A000-memory.dmp

            Filesize

            616KB

          • memory/2660-1-0x00000000049E0000-0x0000000004A81000-memory.dmp

            Filesize

            644KB

          • memory/2660-2-0x0000000004A90000-0x0000000004BAB000-memory.dmp

            Filesize

            1.1MB

          • memory/3284-4-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3284-16-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3284-6-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3284-3-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3284-5-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4320-20-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4320-22-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4320-21-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4320-27-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4320-28-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4320-29-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4320-32-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4320-34-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4320-35-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4320-36-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4320-38-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB