Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/04/2024, 16:14

General

  • Target

    e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe

  • Size

    804KB

  • MD5

    c5c1ca56d106806d9b23a85fd3dd08dc

  • SHA1

    c665b88616eb5c4283c25188ff078145b218f07d

  • SHA256

    e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148

  • SHA512

    a0517342af6f496eba51b823e0d96ab33a1d6079fa2f6c01bc754f29ca28ed5324b88c8e82175a3b97e8e6d5ff029f20640a419aa7ba49089e57af813a8113e9

  • SSDEEP

    12288:Kirakz6ZgXYHgPMbfwNHRsMqGZ8KimyNbfh0GMUBCL4eFu87oDIEDE8SnCcD:KiQdfw4Mq08Kmbh77I/T

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 17 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\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe
    "C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4576
    • C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe
      "C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4704
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\3c72a42b-b2d7-4eed-9fc5-632b5574b6d3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:440
      • C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe
        "C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4092
        • C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe
          "C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3472

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

    f741810cb830974aebab5f43eb80bc43

    SHA1

    1019ffd11ba07f662659b7f244d2743b4b1562c3

    SHA256

    20c4d592f763227cd6ed7fc812ae9d65edd6e046c30a70e7c694c579d9f1580a

    SHA512

    607ca542510b2a90fbade08569e449fdf35673dc4f045c4ca61982666fe2dd694d265835ebe2d90146dfcecedc7f229804c8e235d8eb9ca36f761064522539f4

  • 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

    7d239292529ac220a22978a9bb964d73

    SHA1

    9baab3021acea6aa3e100986d0970960a0329292

    SHA256

    b6e99c7eb6f2b36cb6cd8b777484ec45d27f90759c3376ec8ba87c743d7a99ad

    SHA512

    e98beaa915dd0aa094377aeb47f64090a82a76d869573fc972e5c2a324a12475af9d83f72d62e89ecfedc4c90e885a900afe190e8d2594323d3466fc23a895be

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

    Filesize

    392B

    MD5

    9e4e8915e111e1b47ab28007cc1e5fea

    SHA1

    e98a128d5d5c1fd8bc713a8f1c00687d4c80e17e

    SHA256

    55e785c63565c804838093baeb2fe57ac8256b1043889eaa7217e80cd0859a6e

    SHA512

    5bd5933cf209b8ff8249c892ffa40956dea33aa566318b8535eb4f0d7656212606972d97e7b4b82036d7b72589f33d02d3a309328f26eb39bae18aad0b2a7b3b

  • C:\Users\Admin\AppData\Local\3c72a42b-b2d7-4eed-9fc5-632b5574b6d3\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe

    Filesize

    804KB

    MD5

    c5c1ca56d106806d9b23a85fd3dd08dc

    SHA1

    c665b88616eb5c4283c25188ff078145b218f07d

    SHA256

    e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148

    SHA512

    a0517342af6f496eba51b823e0d96ab33a1d6079fa2f6c01bc754f29ca28ed5324b88c8e82175a3b97e8e6d5ff029f20640a419aa7ba49089e57af813a8113e9

  • memory/3472-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3472-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3472-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3472-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3472-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3472-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3472-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3472-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3472-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3472-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3472-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4092-18-0x00000000049D0000-0x0000000004A64000-memory.dmp

    Filesize

    592KB

  • memory/4576-2-0x0000000004A40000-0x0000000004B5B000-memory.dmp

    Filesize

    1.1MB

  • memory/4576-1-0x00000000049A0000-0x0000000004A3E000-memory.dmp

    Filesize

    632KB

  • memory/4704-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4704-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4704-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4704-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4704-15-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB