Analysis

  • max time kernel
    138s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    17/04/2022, 14:08

General

  • Target
    49a08e44775cbeb7884f980850a07a08386b1c5359a120984b61515df6509140.exe
  • Size 1.7MB
  • Sample220417-rfpqlafdfp
  • SHA256 49a08e44775cbeb7884f980850a07a08386b1c5359a120984b61515df6509140
  • 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\49a08e44775cbeb7884f980850a07a08386b1c5359a120984b61515df6509140.exe
    "C:\Users\Admin\AppData\Local\Temp\49a08e44775cbeb7884f980850a07a08386b1c5359a120984b61515df6509140.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2448
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
      "Powershell" Add-MpPreference -ExclusionPath '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\VideoLAN\vlc.exe"'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4784
    • C:\Users\Admin\AppData\Local\Temp\49a08e44775cbeb7884f980850a07a08386b1c5359a120984b61515df6509140.exe
      "C:\Users\Admin\AppData\Local\Temp\49a08e44775cbeb7884f980850a07a08386b1c5359a120984b61515df6509140.exe"
      2⤵
        PID:4380
      • C:\Users\Admin\AppData\Local\Temp\49a08e44775cbeb7884f980850a07a08386b1c5359a120984b61515df6509140.exe
        "C:\Users\Admin\AppData\Local\Temp\49a08e44775cbeb7884f980850a07a08386b1c5359a120984b61515df6509140.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:4720

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          49a08e44775cbeb7884f980850a07a08386b1c5359a120984b61515df6509140.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\49a08e44775cbeb7884f980850a07a08386b1c5359a120984b61515df6509140.exe.log
          • Size 226B
          • SHA256 7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d
          • MD5 SHA1 SHA512

          memory/2448-130-0x0000000000380000-0x0000000000546000-memory.dmp

          memory/4720-143-0x0000000005D60000-0x0000000005DF2000-memory.dmp

          memory/4720-158-0x0000000005953000-0x0000000005955000-memory.dmp

          memory/4720-157-0x0000000007770000-0x000000000777A000-memory.dmp

          memory/4720-135-0x0000000000400000-0x0000000000486000-memory.dmp

          memory/4720-156-0x0000000007990000-0x0000000007A2C000-memory.dmp

          memory/4720-155-0x0000000007790000-0x00000000077E0000-memory.dmp

          memory/4720-144-0x00000000063B0000-0x0000000006954000-memory.dmp

          memory/4784-137-0x0000000004CF0000-0x0000000005318000-memory.dmp

          memory/4784-150-0x0000000006FA0000-0x0000000006FAA000-memory.dmp

          memory/4784-141-0x0000000005C20000-0x0000000005C3E000-memory.dmp

          memory/4784-140-0x00000000055F0000-0x0000000005656000-memory.dmp

          memory/4784-145-0x0000000006DD0000-0x0000000006E02000-memory.dmp

          memory/4784-147-0x00000000061E0000-0x00000000061FE000-memory.dmp

          memory/4784-146-0x00000000706D0000-0x000000007071C000-memory.dmp

          memory/4784-149-0x0000000006F30000-0x0000000006F4A000-memory.dmp

          memory/4784-148-0x0000000007570000-0x0000000007BEA000-memory.dmp

          memory/4784-142-0x0000000004675000-0x0000000004677000-memory.dmp

          memory/4784-151-0x00000000071B0000-0x0000000007246000-memory.dmp

          memory/4784-152-0x0000000007160000-0x000000000716E000-memory.dmp

          memory/4784-153-0x0000000007270000-0x000000000728A000-memory.dmp

          memory/4784-154-0x0000000007250000-0x0000000007258000-memory.dmp

          memory/4784-139-0x0000000005510000-0x0000000005576000-memory.dmp

          memory/4784-138-0x0000000004C70000-0x0000000004C92000-memory.dmp

          memory/4784-133-0x0000000004680000-0x00000000046B6000-memory.dmp