Analysis

  • max time kernel
    109s
  • max time network
    131s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    16/07/2020, 08:18

General

  • Target
    AWB CUSTOM TAX.exe
  • Size 560KB
  • Sample200716-v6pfndra5s
  • SHA256 3f0bb6576f8d4ca423a9e4fab5901c9e590e07106171045b6c8b548cb01b1017
  • MD5 SHA1 SHA512

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    smtp.usamilitarydept.com

  • Port

    587

  • Password

    qqkgpIN2

Signatures

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • 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 data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Suspicious use of WriteProcessMemory 11 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Reads user/profile data of web browsers 2 TTPs

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\AWB CUSTOM TAX.exe
    "C:\Users\Admin\AppData\Local\Temp\AWB CUSTOM TAX.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious use of SetThreadContext
    PID:2416
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IEossxWkvBpo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD7A9.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2800
    • C:\Users\Admin\AppData\Local\Temp\AWB CUSTOM TAX.exe
      "{path}"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious behavior: EnumeratesProcesses
      PID:3532

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3532-4-0x0000000000400000-0x000000000044C000-memory.dmp