Analysis

  • max time kernel
    149s
  • max time network
    149s
  • 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 09:30

General

  • Target

    35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe

  • Size

    703KB

  • MD5

    8d35c959439087a5afeb4102f8d9a537

  • SHA1

    9db82f937ff4e3ef9881c0d72557418cee6fb9b3

  • SHA256

    35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22

  • SHA512

    a7c49eca997c58bde5dc7e2edb53a310894f7fc17d4ff7e1c6ab9edf8927738d7143158eb71f7da60d5e268da3cb1f5066b90d514285f784b42f4417ff8dfefe

  • SSDEEP

    12288:VGHSBXVfmazQuehq0vfn3XQTCLPjTlGzqJ8gyOt2PdeojBWat:VGueuVeo0oyPXiQPVUPwQBWa

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\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
    "C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4532
    • C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
      "C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2604
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\92e9acd4-2088-4a0b-9833-1799f598345a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2484
      • C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
        "C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:876
        • C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
          "C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:728

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

    195fc28150bef9b30510eed36fb325af

    SHA1

    1ea8a314d8af1d431b77d5280d1782e9a8e867c6

    SHA256

    5c2e51ccf5767f80257a0a0bb66dee40957e5379431e15a118e7f1343ad1f6e0

    SHA512

    537da7e46d8b5afc796c1908042088c583c5380fb729f3665845fe36286b3efeaec9fa26475e9c2263f55b1eca04bd7ae26088a9a85950b2b7f750fd24eadcfc

  • 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

    d3a63e66f5d9607a347a08deb3e1890b

    SHA1

    df2ed50de14bbb9f3e5ca1548cbd6bbb2daac99c

    SHA256

    b0e9296973270823be8a54e41454ea1e1df07f36b84672d6d9e1af86b7ba629a

    SHA512

    3cf4edf3fbb4f8c1af28af3390bff504d949818ebe16395f79ed1152907301db4b84fe42c8a4dea5bb6d088775b0a964b98ebe2aad586fa042bf3b57d7d13e1a

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

    Filesize

    392B

    MD5

    ebae875c70c43966e9fc32aba2f29cbc

    SHA1

    b117fa04ef1700f0a484f48d46c8bb4589ef0e59

    SHA256

    c57cb73159dbcebfb7901c1525c2eb2ce0cff5a12925b5c0f52d7911c200adb3

    SHA512

    61678196f3fc5755d16cb00b044e4ddd8a66b10dee895b0e021c9f7e4f31243f683abc4f14edbe92922c0b1f5e2c72279069eed03f73a7e05f860e44da26e925

  • C:\Users\Admin\AppData\Local\92e9acd4-2088-4a0b-9833-1799f598345a\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe

    Filesize

    703KB

    MD5

    8d35c959439087a5afeb4102f8d9a537

    SHA1

    9db82f937ff4e3ef9881c0d72557418cee6fb9b3

    SHA256

    35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22

    SHA512

    a7c49eca997c58bde5dc7e2edb53a310894f7fc17d4ff7e1c6ab9edf8927738d7143158eb71f7da60d5e268da3cb1f5066b90d514285f784b42f4417ff8dfefe

  • memory/728-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/728-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/728-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/728-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/728-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/728-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/728-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/728-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/728-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2604-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2604-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2604-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2604-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2604-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4532-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp

    Filesize

    1.1MB

  • memory/4532-1-0x0000000004930000-0x00000000049CC000-memory.dmp

    Filesize

    624KB