Analysis

  • max time kernel
    140s
  • max time network
    143s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    31/07/2020, 12:17

General

  • Target
    SUNCOAST-EML-purchase order.XLS.exe
  • Size 713KB
  • Sample200731-tl2gsc2lw2
  • SHA256 bee273e8651fb168e330da50d83a3e4ad3769692d365d20f0cd9e1afbe13bcb0
  • MD5 SHA1 SHA512

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    smtp.yandex.com

  • Port

    587

  • Password

    qwerty123@

Signatures

  • Suspicious behavior: EnumeratesProcesses 224 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetThreadContext 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 user/profile data of web browsers 2 TTPs

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

  • AgentTesla

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

  • Suspicious use of WriteProcessMemory 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • AgentTesla Payload 4 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

Processes

  • C:\Users\Admin\AppData\Local\Temp\SUNCOAST-EML-purchase order.XLS.exe
    "C:\Users\Admin\AppData\Local\Temp\SUNCOAST-EML-purchase order.XLS.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3828
    • C:\Users\Admin\AppData\Local\Temp\SUNCOAST-EML-purchase order.XLS.exe
      "C:\Users\Admin\AppData\Local\Temp\SUNCOAST-EML-purchase order.XLS.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3892
    • C:\Users\Admin\AppData\Local\Temp\SUNCOAST-EML-purchase order.XLS.exe
      "C:\Users\Admin\AppData\Local\Temp\SUNCOAST-EML-purchase order.XLS.exe" 2 3892 53328
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:3884

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/3892-0-0x0000000000400000-0x00000000004A4000-memory.dmp

        memory/3892-3-0x0000000000400000-0x00000000004A4000-memory.dmp

        memory/3892-4-0x0000000000400000-0x00000000004A4000-memory.dmp

        memory/3892-5-0x00000000009E0000-0x0000000000A2C000-memory.dmp

        memory/3892-6-0x0000000000812000-0x0000000000813000-memory.dmp