Analysis

  • max time kernel
    107s
  • max time network
    65s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09/11/2020, 20:52

General

  • Target
    KTM_Quotation20042020.pdf.exe
  • Size 416KB
  • Sample201109-16w43m4eqe
  • SHA256 0d8bc494a88c46b0bae461e6b8ef8f40970aafa9c79f67414ceef16586f8cbe7
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    smtp.cdldxy-cn.com

  • Port

    587

  • Password

    SSzps(s5

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\KTM_Quotation20042020.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\KTM_Quotation20042020.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Users\Admin\AppData\Local\Temp\KTM_Quotation20042020.pdf.exe
      "{path}"
      2⤵
        PID:1100
      • C:\Users\Admin\AppData\Local\Temp\KTM_Quotation20042020.pdf.exe
        "{path}"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1640
        • C:\Windows\SysWOW64\netsh.exe
          "netsh" wlan show profile
          3⤵
            PID:816

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/1640-0-0x0000000000400000-0x0000000000452000-memory.dmp

            memory/1640-2-0x0000000000400000-0x0000000000452000-memory.dmp

            memory/1640-3-0x0000000000400000-0x0000000000452000-memory.dmp