Analysis

  • max time kernel
    117s
  • max time network
    164s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    14/04/2022, 13:48

General

  • Target
    19ff97b6d41b4ea84793b132baeb66ff5870f25e00c6e1f65ef0d43e43744ad2.exe
  • Size 2.9MB
  • Sample220414-q3485abcej
  • SHA256 19ff97b6d41b4ea84793b132baeb66ff5870f25e00c6e1f65ef0d43e43744ad2
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 42 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\19ff97b6d41b4ea84793b132baeb66ff5870f25e00c6e1f65ef0d43e43744ad2.exe
    "C:\Users\Admin\AppData\Local\Temp\19ff97b6d41b4ea84793b132baeb66ff5870f25e00c6e1f65ef0d43e43744ad2.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3720
    • C:\Users\Admin\AppData\Local\Temp\19ff97b6d41b4ea84793b132baeb66ff5870f25e00c6e1f65ef0d43e43744ad2.exe
      "C:\Users\Admin\AppData\Local\Temp\19ff97b6d41b4ea84793b132baeb66ff5870f25e00c6e1f65ef0d43e43744ad2.exe"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:2296
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\19ff97b6d41b4ea84793b132baeb66ff5870f25e00c6e1f65ef0d43e43744ad2.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4008

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/2296-145-0x00000000076F0000-0x000000000778C000-memory.dmp

        memory/2296-139-0x0000000000400000-0x0000000000486000-memory.dmp

        memory/2296-140-0x00000000062E0000-0x0000000006346000-memory.dmp

        memory/2296-141-0x0000000005283000-0x0000000005285000-memory.dmp

        memory/2296-143-0x0000000007500000-0x0000000007550000-memory.dmp

        memory/3720-135-0x0000000005EE0000-0x0000000006484000-memory.dmp

        memory/3720-136-0x0000000005930000-0x00000000059C2000-memory.dmp

        memory/3720-137-0x0000000005870000-0x000000000587A000-memory.dmp

        memory/3720-134-0x0000000000BE0000-0x0000000000ED0000-memory.dmp

        memory/4008-146-0x00000000057A0000-0x0000000005DC8000-memory.dmp

        memory/4008-153-0x0000000006D40000-0x0000000006D5E000-memory.dmp

        memory/4008-147-0x0000000005750000-0x0000000005772000-memory.dmp

        memory/4008-148-0x0000000005F40000-0x0000000005FA6000-memory.dmp

        memory/4008-149-0x00000000065D0000-0x00000000065EE000-memory.dmp

        memory/4008-150-0x0000000002E15000-0x0000000002E17000-memory.dmp

        memory/4008-151-0x0000000006D60000-0x0000000006D92000-memory.dmp

        memory/4008-152-0x000000006FE80000-0x000000006FECC000-memory.dmp

        memory/4008-144-0x0000000002DD0000-0x0000000002E06000-memory.dmp

        memory/4008-154-0x0000000008110000-0x000000000878A000-memory.dmp

        memory/4008-155-0x0000000007AB0000-0x0000000007ACA000-memory.dmp

        memory/4008-156-0x0000000007B00000-0x0000000007B0A000-memory.dmp

        memory/4008-157-0x0000000007D00000-0x0000000007D96000-memory.dmp

        memory/4008-158-0x0000000007CC0000-0x0000000007CCE000-memory.dmp

        memory/4008-159-0x0000000007DD0000-0x0000000007DEA000-memory.dmp

        memory/4008-160-0x0000000007DB0000-0x0000000007DB8000-memory.dmp