Analysis

  • max time kernel
    70s
  • max time network
    114s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    15/04/2022, 12:25

General

  • Target
    80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732.exe
  • Size 1.1MB
  • Sample220415-plm3vacae6
  • SHA256 80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732
  • 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732.exe
    "C:\Users\Admin\AppData\Local\Temp\80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4852
    • C:\Users\Admin\AppData\Local\Temp\80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732.exe
      "C:\Users\Admin\AppData\Local\Temp\80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732.exe"
      2⤵
        PID:1612
      • C:\Users\Admin\AppData\Local\Temp\80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732.exe
        "C:\Users\Admin\AppData\Local\Temp\80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732.exe"
        2⤵
          PID:2460
        • C:\Users\Admin\AppData\Local\Temp\80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732.exe
          "C:\Users\Admin\AppData\Local\Temp\80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732.exe"
          2⤵
            PID:2580
          • C:\Users\Admin\AppData\Local\Temp\80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732.exe
            "C:\Users\Admin\AppData\Local\Temp\80d73e9e713d61bb276472016d1cd24ae10177fa10c96555c0564922810eb732.exe"
            2⤵
            • Checks computer location settings
            • Accesses Microsoft Outlook profiles
            • Suspicious behavior: AddClipboardFormatListener
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • outlook_office_path
            • outlook_win_path
            PID:2412

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              memory/2412-138-0x0000000000400000-0x0000000000486000-memory.dmp

              memory/2412-142-0x0000000007BA0000-0x0000000007C3C000-memory.dmp

              memory/2412-141-0x0000000007130000-0x0000000007180000-memory.dmp

              memory/2412-140-0x00000000056E3000-0x00000000056E5000-memory.dmp

              memory/2412-139-0x00000000067E0000-0x0000000006846000-memory.dmp

              memory/4852-130-0x0000000000890000-0x00000000009B8000-memory.dmp

              memory/4852-133-0x0000000005390000-0x000000000539A000-memory.dmp

              memory/4852-132-0x00000000053A0000-0x0000000005432000-memory.dmp

              memory/4852-131-0x00000000058B0000-0x0000000005E54000-memory.dmp