Analysis

  • max time kernel
    143s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 09:22

General

  • Target

    d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe

  • Size

    807KB

  • MD5

    5435b6a8f8dabe63910f1e9e4d436e5f

  • SHA1

    a9e66834552de4d90d205d8b7c349e0d64d6f65f

  • SHA256

    d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d

  • SHA512

    748179129dd992654d01f8397f203840bf16fefbe125e09f455c8569b20ccf6c022022cf8188fa9c942c1d515b306300a19fe19388f1a24388b5858d596e7ca6

  • SSDEEP

    12288:Kupoo6qqaUYbgUaK5agd9dDOL21+Y8aUnEunsDTDENagBhWZDaVs3Uw:tp56qqauOaU9ECDUEhr8CEw

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .vepi

  • 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: 0871PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 16 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\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
    "C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4332
    • C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
      "C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4572
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\dd6c1939-36f3-494f-9a93-4b5934225d5e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4348
      • C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
        "C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2036
        • C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
          "C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1472
  • 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 --field-trial-handle=4404,i,1697479186275492802,18058102846092193784,262144 --variations-seed-version --mojo-platform-channel-handle=4368 /prefetch:8
    1⤵
      PID:3000

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Defense Evasion

    File and Directory Permissions Modification

    1
    T1222

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
      Filesize

      1KB

      MD5

      e4cacc9fa4adc8a6751aaf917c99e447

      SHA1

      d27c0b41d3fe6627c82ea3e6e762b1474f64ba51

      SHA256

      6ebb6b38a3cab01ca3d714f8df8b1d1dc0f159922fe9ae5e104dcd27c59eaf30

      SHA512

      fc104a463bf08270217f88841c8690dcb264abeebf8bd78dfda2dd2bd4fa85231dc7aede74e427483065ef3e6ef3f2c7e73c1c67dc274861da3421ea35927a80

    • 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

      c882d1be8633b4058dadd059937eedec

      SHA1

      62ceed4c0af15b79846c85633193e3620d2ff36b

      SHA256

      f373d4ab078ac1aaaf9f559d1c2706bd1df0e38cd3fe4f4e8b8b1f0f60eb09c8

      SHA512

      04f5bcff82997d3a7806391c8e631d10d5a29efee9fa357bb00783169bde7dc14fa246f6fd4a6b60051f57566dcf5de2535396cc64ddac193c4fbee00e2f8bb3

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

      392B

      MD5

      5c6c1b916a6064cc07dc071f50586284

      SHA1

      5652ecbff28b9d198a96d44e4674d3e4f5ea21af

      SHA256

      37d1422572b7033a580ba520cb7dc696a075dd79d13c2df157c36ba8f01e722e

      SHA512

      079612ebcc78f04d4582ddb260974b2e6e1f6f04b0147e84b95935730dcd67295e48b7a176681c7b7c9e5f0c15afb0be583d9be1adb061825e0655f0123b288b

    • C:\Users\Admin\AppData\Local\dd6c1939-36f3-494f-9a93-4b5934225d5e\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
      Filesize

      807KB

      MD5

      5435b6a8f8dabe63910f1e9e4d436e5f

      SHA1

      a9e66834552de4d90d205d8b7c349e0d64d6f65f

      SHA256

      d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d

      SHA512

      748179129dd992654d01f8397f203840bf16fefbe125e09f455c8569b20ccf6c022022cf8188fa9c942c1d515b306300a19fe19388f1a24388b5858d596e7ca6

    • memory/1472-32-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1472-35-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1472-40-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1472-22-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1472-24-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1472-37-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1472-38-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1472-31-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1472-30-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1472-41-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2036-25-0x0000000000400000-0x0000000002015000-memory.dmp
      Filesize

      28.1MB

    • memory/2036-39-0x0000000000400000-0x0000000002015000-memory.dmp
      Filesize

      28.1MB

    • memory/4332-2-0x0000000003DD0000-0x0000000003EEB000-memory.dmp
      Filesize

      1.1MB

    • memory/4332-1-0x00000000020F0000-0x0000000002185000-memory.dmp
      Filesize

      596KB

    • memory/4572-19-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4572-4-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4572-6-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4572-5-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4572-3-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB