Analysis

  • max time kernel
    86s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/04/2023, 08:12

General

  • Target
    Orden de Compra.pdf.exe
  • Size 515KB
  • Sample230412-j3tztscd9x
  • SHA256 0239bc35516d6d3680c64f7a5a5a40801c7b0ea4db8a80718e4774687c565af3
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • azorult

C2
  • http://171.22.30.164/smith/index.php

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Loads dropped DLL 4 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Orden de Compra.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Orden de Compra.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4088
    • C:\Users\Admin\AppData\Local\Temp\Orden de Compra.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Orden de Compra.pdf.exe"
      2⤵
      • Loads dropped DLL
      • Accesses Microsoft Outlook profiles
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • outlook_office_path
      • outlook_win_path
      PID:4684

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        mozglue.dll

        • Path C:\Users\Admin\AppData\Local\Temp\774C0CC0\mozglue.dll
        • Size 135KB
        • SHA256 830533bb569594ec2f7c07896b90225006b90a9af108f49d6fb6bebd02428b2d
        • MD5 SHA1 SHA512 SSDEEP

        msvcp140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\774C0CC0\msvcp140.dll
        • Size 429KB
        • SHA256 334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4
        • MD5 SHA1 SHA512 SSDEEP

        nss3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\774C0CC0\nss3.dll
        • Size 1.2MB
        • SHA256 f0e6210d4a0d48c7908d8d1c270449c91eb4523e312a61256833bfeaf699abfb
        • MD5 SHA1 SHA512 SSDEEP

        vcruntime140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\774C0CC0\vcruntime140.dll
        • Size 81KB
        • SHA256 c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d
        • MD5 SHA1 SHA512 SSDEEP

        memory/4088-139-0x0000000005AA0000-0x0000000005B3C000-memory.dmp

        memory/4088-138-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

        memory/4088-133-0x0000000000010000-0x0000000000098000-memory.dmp

        memory/4088-137-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

        memory/4088-136-0x0000000004A40000-0x0000000004A4A000-memory.dmp

        memory/4088-135-0x0000000004AC0000-0x0000000004B52000-memory.dmp

        memory/4088-134-0x0000000004FD0000-0x0000000005574000-memory.dmp

        memory/4684-140-0x0000000000400000-0x0000000000420000-memory.dmp

        memory/4684-143-0x0000000000400000-0x0000000000420000-memory.dmp

        memory/4684-144-0x0000000000400000-0x0000000000420000-memory.dmp

        memory/4684-264-0x0000000000400000-0x0000000000420000-memory.dmp