Analysis

  • max time kernel
    150s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    13/07/2020, 14:44

General

  • Target
    05d706b427d5bf71f40f80891ae615b1.exe
  • Size 1.1MB
  • Sample200713-1efbfrzqex
  • SHA256 fa28b1a6ff3b10c3fd15538fa05946b6864a49acead10738a0b6bdb44da64816
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • MassLogger

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

  • Suspicious behavior: EnumeratesProcesses 2658 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Drops startup file 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.

  • Executes dropped EXE 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • NTFS ADS 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\05d706b427d5bf71f40f80891ae615b1.exe
    "C:\Users\Admin\AppData\Local\Temp\05d706b427d5bf71f40f80891ae615b1.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1732
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      • Drops startup file
      • NTFS ADS
      PID:1988
      • C:\Users\Admin\AppData\Roaming\app\hjiwws.exe
        "C:\Users\Admin\AppData\Roaming\app\hjiwws.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        PID:1016
        • C:\Users\Admin\AppData\Roaming\app\hjiwws.exe
          "C:\Users\Admin\AppData\Roaming\app\hjiwws.exe"
          4⤵
          • Suspicious use of SetWindowsHookEx
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious use of AdjustPrivilegeToken
          • Executes dropped EXE
          PID:2128
        • C:\Users\Admin\AppData\Roaming\app\hjiwws.exe
          "C:\Users\Admin\AppData\Roaming\app\hjiwws.exe" 2 2128 124890
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Executes dropped EXE
          PID:2172

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/2128-4-0x0000000000400000-0x0000000000542000-memory.dmp

        memory/2128-8-0x0000000000400000-0x0000000000542000-memory.dmp

        memory/2128-10-0x0000000000400000-0x0000000000542000-memory.dmp

        memory/2128-11-0x0000000002390000-0x000000000242A000-memory.dmp

        memory/2128-12-0x0000000000BD2000-0x0000000000BD3000-memory.dmp