Analysis

  • max time kernel
    139s
  • max time network
    141s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    29/06/2020, 12:42

General

  • Target
    Facturas Pagadas al Vencimiento.exe
  • Size 1.0MB
  • Sample200629-ej3e8hplvj
  • SHA256 5eea5dce17a4e94abf88cd9e970af8e5f937789c66459d86a5352f519e753af3
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.gascuenca.es

  • Port

    587

  • Password

    gasW203@Z7

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • UPX packed file 3 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 56 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe
    "C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1600
    • C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe
      "C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3716
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:3888
      • C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe
        "C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe" 2 3716 123890
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2912

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/3716-0-0x0000000000400000-0x00000000004AC000-memory.dmp

          memory/3716-3-0x0000000000400000-0x00000000004AC000-memory.dmp

          memory/3716-4-0x0000000000400000-0x00000000004AC000-memory.dmp

          memory/3716-5-0x00000000021B0000-0x0000000002200000-memory.dmp

          memory/3716-6-0x00000000022B2000-0x00000000022B3000-memory.dmp