Analysis

  • max time kernel
    143s
  • max time network
    125s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    15/04/2024, 21:24

General

  • Target

    5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe

  • Size

    819KB

  • MD5

    3d18b4d0c8a37c764f5d1258c346988f

  • SHA1

    406d89e9ada014fc30999b0e68ecffc3efb6c5a1

  • SHA256

    5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3

  • SHA512

    59b4d499cf80ab003f7fdb699dc0ccb26cd85676557f8e68172fd7381d36f66e5ab85a930eafa37e13e20298faf039e462f2385570aac810762b3e6cb93fd4c5

  • SSDEEP

    12288:morokz513ZjLAdZbWR8kuG0ooPGEhSJSn2KZsY2UEQDsyJKnlSzIoNrVksnZUnqO:moHZ46R8kuVo2L0JSnTyPyNZzZkqO

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.

  • 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\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe
    "C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:556
    • C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe
      "C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4196
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a867201c-7ce3-437f-90a0-031915e87e54" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2268
      • C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe
        "C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4708
        • C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe
          "C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2780

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

    3c6a98dff2c8e5d41183fb934602bccf

    SHA1

    389eea4f6c8b9a19dd6efd65b2c979feeb4262a7

    SHA256

    8c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8

    SHA512

    fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd

  • 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

    5ef094b8f729b5932055d1183b4621be

    SHA1

    aef59e51a62465bbce63e05c5dd5a7ac50f842ac

    SHA256

    e60ba70d3690db7acc43d9baa21b5e4eb0df8e546a702a566e434c084f04040b

    SHA512

    90685e564003ed51e0cd98fc7fd7b30a186ce49761c78dc631864f5962097a44480aae2eec26d19fd3f49b75ab371e04ef03a25752315dfd026e9b5197562c7d

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

    Filesize

    392B

    MD5

    3b7ba00b3b1bf5ab6776755cfa7308f6

    SHA1

    285ac79fdd8544a90a3798ce562050a7c8cd52f0

    SHA256

    acc75ea60727be07a50add794eb0b446a95cbc68bb743eb877f74d0b6bd5cfd1

    SHA512

    cd99a73b6a89d3194cb5d0414f9e95719d95dc301a332f30584ff4b65a15fea8272829cf42a985cc8b9acb8e67ef669ad6ddcefc2da552239083e386df88f0aa

  • C:\Users\Admin\AppData\Local\a867201c-7ce3-437f-90a0-031915e87e54\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe

    Filesize

    819KB

    MD5

    3d18b4d0c8a37c764f5d1258c346988f

    SHA1

    406d89e9ada014fc30999b0e68ecffc3efb6c5a1

    SHA256

    5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3

    SHA512

    59b4d499cf80ab003f7fdb699dc0ccb26cd85676557f8e68172fd7381d36f66e5ab85a930eafa37e13e20298faf039e462f2385570aac810762b3e6cb93fd4c5

  • memory/556-2-0x0000000004BA0000-0x0000000004CBB000-memory.dmp

    Filesize

    1.1MB

  • memory/556-1-0x0000000004B00000-0x0000000004B99000-memory.dmp

    Filesize

    612KB

  • memory/2780-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2780-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2780-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2780-44-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2780-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2780-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2780-43-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2780-42-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2780-41-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2780-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2780-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4196-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4196-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4196-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4196-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4196-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4708-38-0x0000000004AD0000-0x0000000004B65000-memory.dmp

    Filesize

    596KB

  • memory/4708-23-0x0000000004AD0000-0x0000000004B65000-memory.dmp

    Filesize

    596KB