Analysis

  • max time kernel
    142s
  • max time network
    123s
  • 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, 09:26

General

  • Target

    235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe

  • Size

    771KB

  • MD5

    ee8058320fb4a8fb8246a79f2bdc6201

  • SHA1

    97cc9afb26cc57eb82daa74319aaa8375175ff05

  • SHA256

    235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d

  • SHA512

    6a1b7cfc6a617a4cb9797cf4ee7791c5bb30ad8156683080e7fad00474d61fb8b1392bdfde658953d44cc41aeddfbab5ce836fc8b6b4ddae24064462942f8028

  • SSDEEP

    12288:OjfHuSUI79taNFbFZeZhqpPqnLyh8lEhvibAeVPao00kVCzk1vkmJuK0EqAtphYn:Hvqn2FbPeZhsphvaatuaqeOeW

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 18 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\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe
    "C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3848
    • C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe
      "C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2736
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\7b7a6805-12d1-45c2-a39e-612452f0ec2a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4848
      • C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe
        "C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4084
        • C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe
          "C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1856

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

          b715790f51f0d2733b82e94647b9b91c

          SHA1

          1bbc5dbd2877eee1945160cb0e7310cd6ca98071

          SHA256

          005e81e16fa80f4f5559c8d6245ac120ed0e8c1b6fb89b491a8386810ec5c44c

          SHA512

          59fbe9a43e4b82dfb26b4ae99ca1d40c2810a153034279275f0ceaf6fff1db59342cff6b86349b84c317abbadc041415c503c01015334b10e7c0c91c08ef9082

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

          Filesize

          392B

          MD5

          16ce98ddfa8f4d2a88a765f789546876

          SHA1

          5f817515731de00def0a79f80695b537553db161

          SHA256

          11452f53930eb6f5acc9987fce6115b36ed905092c1f33671a488be3eb877285

          SHA512

          c9edab4969ac78da2388685a59dd6eae3e99d38ce81631bf69ae02dc9aedb081dc7d6a230c440f0be0760fe98cb2a21679b95c1864b74a5b807cc6c1d5accc6e

        • C:\Users\Admin\AppData\Local\7b7a6805-12d1-45c2-a39e-612452f0ec2a\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe

          Filesize

          771KB

          MD5

          ee8058320fb4a8fb8246a79f2bdc6201

          SHA1

          97cc9afb26cc57eb82daa74319aaa8375175ff05

          SHA256

          235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d

          SHA512

          6a1b7cfc6a617a4cb9797cf4ee7791c5bb30ad8156683080e7fad00474d61fb8b1392bdfde658953d44cc41aeddfbab5ce836fc8b6b4ddae24064462942f8028

        • memory/1856-36-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1856-31-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1856-41-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1856-40-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1856-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1856-23-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1856-24-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1856-39-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1856-38-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1856-33-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1856-30-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1856-29-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2736-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2736-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2736-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2736-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2736-17-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3848-2-0x0000000004A40000-0x0000000004B5B000-memory.dmp

          Filesize

          1.1MB

        • memory/3848-1-0x00000000049A0000-0x0000000004A36000-memory.dmp

          Filesize

          600KB

        • memory/4084-20-0x0000000002F10000-0x0000000002FA3000-memory.dmp

          Filesize

          588KB