Analysis

  • max time kernel
    62s
  • max time network
    65s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    14-07-2020 19:02

General

  • Target

    proforma invoice.exe

  • Size

    394KB

  • MD5

    d8a0ede0fcd30761f746596b82919aeb

  • SHA1

    f00457715b1f97e4327d3d79d51bc6d82d9a988c

  • SHA256

    f519262929d4793f6fa538f80ce1a4c378b6bfa16b09cb8ac63475fd1b1bd39b

  • SHA512

    49f4ededbc3b23281b9a01d9c5e67ee168342972992fbea913d28f071d7bad91ee451c12516784f3b96c77907cce2f429891070c6f412cf71016efc8d1c0f4d3

Malware Config

Extracted

Family

azorult

C2

https://hotelavlokan.com/fungg/32/index.php

Signatures

  • JavaScript code in executable 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • 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 WriteProcessMemory 8 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Loads dropped DLL 16 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Suspicious use of SetThreadContext 1 IoCs
  • Azorult

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

  • Reads user/profile data of web browsers 2 TTPs

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

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\proforma invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\proforma invoice.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetThreadContext
    PID:1088
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Checks processor information in registry
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:1120

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-convert-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-environment-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-filesystem-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-heap-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-locale-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-math-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-multibyte-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-runtime-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-stdio-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-string-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-time-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\api-ms-win-crt-utility-l1-1-0.dll

  • \Users\Admin\AppData\Local\Temp\2fda\mozglue.dll

  • \Users\Admin\AppData\Local\Temp\2fda\msvcp140.dll

  • \Users\Admin\AppData\Local\Temp\2fda\nss3.dll

  • \Users\Admin\AppData\Local\Temp\2fda\vcruntime140.dll

  • memory/1120-0-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/1120-4-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/1120-5-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/1120-3-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/1120-6-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/1120-2-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/1120-1-0x000000000041A1F8-mapping.dmp

  • memory/1120-7-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB