Analysis

  • max time kernel
    120s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    26-10-2021 10:17

General

  • Target

    PO300000003614645-pdf.exe

  • Size

    350KB

  • MD5

    b615a5e9f736d8ea0b9059b2626a97bc

  • SHA1

    9e8baec4860e815032adb261932cf7666a40c139

  • SHA256

    e8e134ada5fe4a1490659f0666bac7c63b95c051119438c43f94a09a54c75f45

  • SHA512

    8349b15120b036ac1eb4eb261b95eb257891527fbd0037ba7b8fc2e034446c2ceaa2a2f5954df87fb416be743fe4c95a984b296023f9a9771d246dd09a29fe66

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.fclbd.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    abc@123@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO300000003614645-pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\PO300000003614645-pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1888
    • C:\Users\Admin\AppData\Local\Temp\PO300000003614645-pdf.exe
      C:\Users\Admin\AppData\Local\Temp\PO300000003614645-pdf.exe
      2⤵
        PID:580
      • C:\Users\Admin\AppData\Local\Temp\PO300000003614645-pdf.exe
        C:\Users\Admin\AppData\Local\Temp\PO300000003614645-pdf.exe
        2⤵
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:1660

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1660-64-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1660-63-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1660-69-0x00000000048F1000-0x00000000048F2000-memory.dmp

      Filesize

      4KB

    • memory/1660-68-0x00000000048F0000-0x00000000048F1000-memory.dmp

      Filesize

      4KB

    • memory/1660-66-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1660-60-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1660-61-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1660-62-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1660-65-0x000000000043765E-mapping.dmp

    • memory/1888-54-0x0000000000050000-0x0000000000051000-memory.dmp

      Filesize

      4KB

    • memory/1888-56-0x0000000000210000-0x0000000000212000-memory.dmp

      Filesize

      8KB

    • memory/1888-59-0x00000000004C0000-0x00000000004E4000-memory.dmp

      Filesize

      144KB

    • memory/1888-58-0x00000000047D0000-0x00000000047D1000-memory.dmp

      Filesize

      4KB

    • memory/1888-57-0x0000000000730000-0x0000000000782000-memory.dmp

      Filesize

      328KB