Analysis

  • max time kernel
    142s
  • max time network
    141s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09/11/2020, 19:48

General

  • Target
    PO copy.pdf.exe
  • Size 655KB
  • Sample201109-zbhl22edqs
  • SHA256 6519dfe26997fc43ff02521a72567a3477dfcee8dbdfeaf35253b30cb07d12af
  • MD5 SHA1 SHA512

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    smtp.yandex.ru

  • Port

    587

  • Password

    chibuikelightwork1

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    smtp.yandex.ru

  • Port

    587

  • Password

    chibuikelightwork1

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 22 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO copy.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\PO copy.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4076
    • C:\Users\Admin\AppData\Local\Temp\PO copy.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\PO copy.pdf.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1292
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:1100
      • C:\Users\Admin\AppData\Local\Temp\PO copy.pdf.exe
        "C:\Users\Admin\AppData\Local\Temp\PO copy.pdf.exe" 2 1292 259276640
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1420

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1292-0-0x0000000000400000-0x00000000004B1000-memory.dmp

          memory/1292-4-0x0000000000400000-0x00000000004B1000-memory.dmp

          memory/1292-3-0x0000000000400000-0x00000000004B1000-memory.dmp

          memory/1292-5-0x0000000000A40000-0x0000000000A92000-memory.dmp

          memory/1292-6-0x0000000000AE2000-0x0000000000AE3000-memory.dmp