Overview

overview

10

Static

static

enquiry.pdf.exe

windows7_x64

10

enquiry.pdf.exe

windows10_x64

3

Analysis

  • max time kernel
    135s
  • max time network
    32s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    24/06/2020, 13:36

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General

  • Target
    enquiry.pdf.exe
  • Size 606KB
  • Sample200624-6pr16ccea6
  • SHA256 8a0dfa424d15f228b79cf8e773937af51dbf53251168b44afa554fd62db25f85
  • MD5 SHA1 SHA512
Score
10/10
agentteslakeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

  • agenttesla

Credentials
  • Protocol

    smtp
  • Host

    mail.bestinjectionmachines.com
  • Port

    587
  • Username

    [email protected]
  • Password

    @?w-%n6@l_sU

Signatures

  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

    spyware
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

    spyware
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spyware
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\enquiry.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\enquiry.pdf.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1016
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v application /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\application.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1004
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v application /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\application.exe"
        3⤵
        • Adds Run key to start application
        PID:780
    • C:\Users\Admin\AppData\Roaming\application.exe
      "C:\Users\Admin\AppData\Roaming\application.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:756
      • C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
        "C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:528

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/528-14-0x0000000000400000-0x000000000044C000-memory.dmp
        Download

        memory/528-17-0x0000000000400000-0x000000000044C000-memory.dmp
        Download

        memory/528-18-0x0000000000400000-0x000000000044C000-memory.dmp
        Download