Analysis

  • max time kernel
    141s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-05-2024 23:21

General

  • Target

    1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe

  • Size

    806KB

  • MD5

    f47c11ca7e97297d5bdbb85910a2f9f2

  • SHA1

    8d5d7e9d38bf7dc9c1510aa656a9468e289a80ba

  • SHA256

    1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4

  • SHA512

    5954c8ebc830da9e2f83830ec991d4118de2e5c03287b4e4c7cf536932fc5385cd2ffa963c95c033cf88addcdf77a941b87e234fb7be496ffb5f435d01a026dc

  • SSDEEP

    12288:qaCXOY0rS3t0QWRQdxyj+pqi3PwzAFrag+5bOm5KiNUJpTZ:9C+YeSvIQdtRPvNagA/FNGt

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 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\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
    "C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1552
    • C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
      "C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3468
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\ff887327-1ffb-479f-9842-c0756065586a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4884
      • C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
        "C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:896
        • C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
          "C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1944

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

    e748938d1288d0f9bc18dbd053bd0c0a

    SHA1

    6849f1bdd08e78770990218197fd67a9aa00020f

    SHA256

    d9f647c7ec20d7107caaf6bacab2efc879612ba95ff9e3cdf02c5d60b9e27ad5

    SHA512

    73df71f941d7160529b42362ef4203c129209cfe2355efc640c6e97c67db4d245df39051324cd7d4687c5679950ac80cc0cd4ac8cd048e52f5c34c4fd3aaac77

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

    Filesize

    392B

    MD5

    4fb32d87bc4f6dd4f68fe0a74854d1e9

    SHA1

    65bebb80171d0ee0a608e7ffe4601fb5c6935a8c

    SHA256

    76854207c83af670b66db7e1c7ba30d6a8aef983d73cef35db64d79bb28b69bd

    SHA512

    9c15edd09a58073f57f6e16849347699e5efcb0148e1d4a527570442d5937f5b25bcab2fb06414ff4c55f8bf144a351e3479e9a34145fc4dea2b55727bbe4c6e

  • C:\Users\Admin\AppData\Local\ff887327-1ffb-479f-9842-c0756065586a\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe

    Filesize

    806KB

    MD5

    f47c11ca7e97297d5bdbb85910a2f9f2

    SHA1

    8d5d7e9d38bf7dc9c1510aa656a9468e289a80ba

    SHA256

    1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4

    SHA512

    5954c8ebc830da9e2f83830ec991d4118de2e5c03287b4e4c7cf536932fc5385cd2ffa963c95c033cf88addcdf77a941b87e234fb7be496ffb5f435d01a026dc

  • memory/1552-2-0x00000000041C0000-0x00000000042DB000-memory.dmp

    Filesize

    1.1MB

  • memory/1552-1-0x0000000002550000-0x00000000025F0000-memory.dmp

    Filesize

    640KB

  • memory/1944-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1944-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1944-41-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1944-40-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1944-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1944-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1944-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1944-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1944-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3468-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3468-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3468-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3468-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3468-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB