Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 00:01

General

  • Target

    434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe

  • Size

    806KB

  • MD5

    94ec3337ff55fbb90c9826771ee1a452

  • SHA1

    92a37f78607bb102849ee65f6efce5902302a958

  • SHA256

    434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e

  • SHA512

    be5f8de7734fde10771cf8567a4b41483bd9033c9ece6a8f92d584b181d7f43e87db22864d33e3cb1c562189dcd230e82e411bb966de9220b5bb8da2e3a89be4

  • SSDEEP

    12288:YX00kQCEdfrJBMAZc5o35iKAO+N6yUemIC7JNJ5g0kYVSxcnG:el6AfXYy5iKAOsSICpSYVq

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .vehu

  • offline_id

    EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1

  • 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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0872PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 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\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe
    "C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4468
    • C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe
      "C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2988
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f77bb46d-2475-4dde-84c0-3379bfb615f5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1560
      • C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe
        "C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4004
        • C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe
          "C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3120

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

    a1d955617a4d146e70544d0d9a0390ca

    SHA1

    5ffdc4453b23e24a7cb0e634b26864c169f5257b

    SHA256

    8dbff2c0018158256912d87dd495a68c351303a319f50f204a930317e867aeb3

    SHA512

    0bffbc27638b12cc04f335de8c4f3c74df01ae55b56f389f8d046d797b4c62d31bbff057ea75ce32f67cdd3b878fd0aad3eb62e983f814296e1b94de3c6ba810

  • 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

    21b2bdc6ad7c6519fc05c22d669147bc

    SHA1

    76ee6162766175733a17631a10b0e0a688e81d6c

    SHA256

    f87ace767d12e65ea8d2d86640300f78d6363a5a50e48b2124f4d40a305b2c07

    SHA512

    b560520fbcf4a81b5d0fae0b2a57ae10adff1518fe6e6523aca939a3aa5a3d0143c43a26a62abf252454c99747ce99a32cdc32adb5ac56e042b98956025ef858

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

    Filesize

    392B

    MD5

    719ce63a8caf8f4939d83ef9a4fd292c

    SHA1

    3c301b344a4a0bf14d4d83acc7d02d1c849af241

    SHA256

    62ad31e4c506a0ef8ae20c53ad03cba19ec7afd17bfbbe9c23bd8c7f4b9d34f4

    SHA512

    b0b4ee9429082d3ad0d68b058624f9ebc753c522354a8293e1c7d09b1def514621cdca14f64c03d7b4434d6e59afe8c41571aa85636cda651ae37da0e2196baa

  • C:\Users\Admin\AppData\Local\f77bb46d-2475-4dde-84c0-3379bfb615f5\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe

    Filesize

    806KB

    MD5

    94ec3337ff55fbb90c9826771ee1a452

    SHA1

    92a37f78607bb102849ee65f6efce5902302a958

    SHA256

    434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e

    SHA512

    be5f8de7734fde10771cf8567a4b41483bd9033c9ece6a8f92d584b181d7f43e87db22864d33e3cb1c562189dcd230e82e411bb966de9220b5bb8da2e3a89be4

  • memory/2988-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3120-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3120-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3120-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3120-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3120-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3120-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3120-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3120-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3120-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4468-1-0x00000000026A0000-0x000000000273C000-memory.dmp

    Filesize

    624KB

  • memory/4468-2-0x0000000004020000-0x000000000413B000-memory.dmp

    Filesize

    1.1MB