Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240319-en
  • resource tags

    arch:x64arch:x86image:win11-20240319-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    09/04/2024, 02:44

General

  • Target

    03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe

  • Size

    771KB

  • MD5

    a911c76f3695c14585bc205d9201804d

  • SHA1

    c8422674f6541052f5b40bc0b0b106b57839581c

  • SHA256

    03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800

  • SHA512

    decf1357c7207e89912b33f6d0071d2112fe01d7612f8002035f0cdeb6e0a19dd3e72d5f63937ab3d54ebe46a5c4f5e2516b0a052d38c079724beb777cdaea79

  • SSDEEP

    12288:xJHZKiK+XbETiv41h3z3oouI5RJMcX6MUy7W3KxCaaUQEyVWeX4FnVq83K/qH46h:fKiqJzYGbhwuW3KrayziaVi

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .uazq

  • 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: 0860PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 18 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\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
    "C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2444
    • C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
      "C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3028
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\e3589f93-9121-40ca-916f-6983846b1db0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3200
      • C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
        "C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2448
        • C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
          "C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1292

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

          580071ebd24cccfd9268e1474bb8134e

          SHA1

          443665efe7009fe1d4c5bc4786dc9cc540e59ef6

          SHA256

          53e3fd53196b53d23b724612cf2704518edf3e979dca02f5674ac419b5f7b461

          SHA512

          13d52455d8a30a0af06c420cd01f13f55efc4c55b59883c5208bf4929352e7b783557bff6a157c4fc71a8e7cbfadf00d55eef8ebef4b984624d8feb116a960a4

        • 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

          16741397ba1bbf4d2d36f19fca44c52a

          SHA1

          3180dc5ff9580328a77f166accb8f924878697e9

          SHA256

          047779fc9aea8da867b00281c50a965bd0af4f3ce67791592fd614614c07236d

          SHA512

          484812cb4bc6bbfe4e29e8626069b66eac86ff9e7e61d486b6bf2a419b61baaf81c33dc1213472bae9e3d41dd9950b115be3bafd245a52372b6cba2094faef02

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

          Filesize

          392B

          MD5

          c973b3d0dee0b10e1707e171bff58568

          SHA1

          1f8875694dc8f9805bcd1371ca6bd52692695f14

          SHA256

          0bb0f84de6a4d4a0cb03d6a37990b3a76b577260dbe6d93206936a4df188cc3e

          SHA512

          4965a0fb6632f0b5417e101affa67a8cc72e9af1c74962dbfe459d99f6394324b28681900f5bd4f98aaa1ae35ac517fc99d30ee6375c521a435b930e0397ad19

        • C:\Users\Admin\AppData\Local\e3589f93-9121-40ca-916f-6983846b1db0\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe

          Filesize

          771KB

          MD5

          a911c76f3695c14585bc205d9201804d

          SHA1

          c8422674f6541052f5b40bc0b0b106b57839581c

          SHA256

          03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800

          SHA512

          decf1357c7207e89912b33f6d0071d2112fe01d7612f8002035f0cdeb6e0a19dd3e72d5f63937ab3d54ebe46a5c4f5e2516b0a052d38c079724beb777cdaea79

        • memory/1292-30-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1292-31-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1292-39-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1292-38-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1292-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1292-23-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1292-24-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1292-37-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1292-36-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1292-34-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1292-29-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2444-2-0x0000000004C80000-0x0000000004D9B000-memory.dmp

          Filesize

          1.1MB

        • memory/2444-1-0x0000000004BE0000-0x0000000004C7A000-memory.dmp

          Filesize

          616KB

        • memory/2448-20-0x0000000004AA0000-0x0000000004B42000-memory.dmp

          Filesize

          648KB

        • memory/3028-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3028-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3028-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3028-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3028-17-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB