Analysis

  • max time kernel
    134s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09/11/2020, 20:41

General

  • Target
    CTC Int'l Group ORDER Nº. 19146.exe
  • Size 465KB
  • Sample201109-3resp7kxwe
  • SHA256 9ff16ce8c4c4391af430eedc58a23ea4d004c597a7ee79790896bdff9abe7700
  • MD5 SHA1 SHA512

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    smtp.yandex.com

  • Port

    587

  • Password

    Swagger22

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    smtp.yandex.com

  • Port

    587

  • Password

    Swagger22

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CTC Int'l Group ORDER Nº. 19146.exe
    "C:\Users\Admin\AppData\Local\Temp\CTC Int'l Group ORDER Nº. 19146.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:416
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GpYNPPNgNSJJs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5AE.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:188
    • C:\Users\Admin\AppData\Local\Temp\CTC Int'l Group ORDER Nº. 19146.exe
      "{path}"
      2⤵
        PID:936
      • C:\Users\Admin\AppData\Local\Temp\CTC Int'l Group ORDER Nº. 19146.exe
        "{path}"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1308
        • C:\Windows\SysWOW64\netsh.exe
          "netsh" wlan show profile
          3⤵
            PID:2104

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/1308-2-0x0000000000400000-0x0000000000452000-memory.dmp