Analysis

  • max time kernel
    143s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/04/2024, 15:31

General

  • Target

    2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe

  • Size

    803KB

  • MD5

    db5427457fb2592b4b7b630ceae0193e

  • SHA1

    8a8a4506975b1f11bf2047cc9d43c72370e7fb28

  • SHA256

    2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38

  • SHA512

    a686d28e056f831042ffa906e4882107d2f5b170b61d00fc2e1f39cac4ab51cf4c7645f340bfb622d28ae934a8aed366ef715f5b07143acf846d9a5639cb57b8

  • SSDEEP

    12288:AhqOckzti/cE1G+ikn/YB13h732Zwx2kkOIeSbRm/o0g6cbJNQZFl:Ahq1G+PnQBHnx2kc3bR2y6szQZF

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\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe
    "C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1472
    • C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe
      "C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3964
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a2546bf4-60f6-4fec-b208-6f41c85c4934" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2792
      • C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe
        "C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4396
        • C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe
          "C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2104

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

    f741810cb830974aebab5f43eb80bc43

    SHA1

    1019ffd11ba07f662659b7f244d2743b4b1562c3

    SHA256

    20c4d592f763227cd6ed7fc812ae9d65edd6e046c30a70e7c694c579d9f1580a

    SHA512

    607ca542510b2a90fbade08569e449fdf35673dc4f045c4ca61982666fe2dd694d265835ebe2d90146dfcecedc7f229804c8e235d8eb9ca36f761064522539f4

  • 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

    0836b385c78e554b37b05f2b82e1d262

    SHA1

    7bb738da5da99f88806bb71a02add22ed7aeaad1

    SHA256

    f9e6699017b010595ce86ae369024b0f6644374b1f8b43180cf2997cbed928ba

    SHA512

    626946bdcbddefaad76376aa2f569923d869a3885455d630594e91f6823fa88008199efe860cb76d14f8a6066611d7b21bed0ea23bc601226ecbd9d33d8515d5

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

    Filesize

    392B

    MD5

    e894578529f08059db9589e4607fdeac

    SHA1

    6566f4c9f4f30aa148749a0bd35a254a670958a3

    SHA256

    4c5bc1c96a5c3e15ebe3a8947c3c092e49a7fac7c90e4f048948a93818b99d15

    SHA512

    535ee8a5a3b8603675260ff40ef2ad176c053f63f61d1f2fbd5c178f1be34c8213746273b8f461d7a0ae39413dbf56737b0db7f806a5c78d28faa4e7a196ef57

  • C:\Users\Admin\AppData\Local\a2546bf4-60f6-4fec-b208-6f41c85c4934\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe

    Filesize

    803KB

    MD5

    db5427457fb2592b4b7b630ceae0193e

    SHA1

    8a8a4506975b1f11bf2047cc9d43c72370e7fb28

    SHA256

    2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38

    SHA512

    a686d28e056f831042ffa906e4882107d2f5b170b61d00fc2e1f39cac4ab51cf4c7645f340bfb622d28ae934a8aed366ef715f5b07143acf846d9a5639cb57b8

  • memory/1472-2-0x0000000004BB0000-0x0000000004CCB000-memory.dmp

    Filesize

    1.1MB

  • memory/1472-1-0x0000000004B10000-0x0000000004BA7000-memory.dmp

    Filesize

    604KB

  • memory/2104-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2104-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2104-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2104-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2104-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2104-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2104-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2104-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2104-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2104-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2104-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-15-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4396-18-0x00000000049F0000-0x0000000004A91000-memory.dmp

    Filesize

    644KB