Analysis

  • max time kernel
    146s
  • max time network
    53s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    17/07/2020, 13:42

General

  • Target

    PO 2310657748.exe

  • Size

    860KB

  • MD5

    1b485d7ef2da49323f1fb9909016b74e

  • SHA1

    bb9df7c8e6b154188cd2740d6eb39874d31b3ba9

  • SHA256

    019b5e23b3187270a339a6ddb46ff2d3935f007ecbb1b82144c9b9f3ea24a44f

  • SHA512

    5634e05251e0631e9f22b56e8935aa6f54445691a446f8781c24a4d0b16bdbfdbf5f86c66d78f93ab2c5acef0ecd9183f6fdf7c96b7c1877098fd916fb0c70f4

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.mexicanproduct.com.mx
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Produccion2020.

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
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO 2310657748.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 2310657748.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1144
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YdGFpN" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCF4F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1432
    • C:\Users\Admin\AppData\Local\Temp\PO 2310657748.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:544

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/544-4-0x0000000000400000-0x000000000044E000-memory.dmp

          Filesize

          312KB

        • memory/544-6-0x0000000000400000-0x000000000044E000-memory.dmp

          Filesize

          312KB

        • memory/544-7-0x0000000000400000-0x000000000044E000-memory.dmp

          Filesize

          312KB