Analysis

  • max time kernel
    91s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-04-2022 05:30

General

  • Target

    e0233e3d234ae8b8eb6b8ca9c9c786ebfe8ae0adebd67fde7221dee9702269b9.exe

  • Size

    1.2MB

  • MD5

    d6c097f46ec91b48fa94cad04d05b8b4

  • SHA1

    04eee12d1b239ec861980d2dd84534fa4e379795

  • SHA256

    e0233e3d234ae8b8eb6b8ca9c9c786ebfe8ae0adebd67fde7221dee9702269b9

  • SHA512

    d4edd019a60b6f681208bfaef7517a6a299887c98fcc91f85aeb24ccdf8a7ec2dd4dfe1215f7628f4dfd5f0d5eee5d49ae4be61c6ccf239c7eb54da7652c890b

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\0F48153F20\Log.txt

Family

masslogger

Ransom Note
<|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 10 Pro 64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 4/20/2022 6:01:44 AM MassLogger Started: 4/20/2022 6:01:40 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\e0233e3d234ae8b8eb6b8ca9c9c786ebfe8ae0adebd67fde7221dee9702269b9.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| USB Spread ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA

Signatures

  • MassLogger

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

  • MassLogger Main Payload 1 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • 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 2 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\e0233e3d234ae8b8eb6b8ca9c9c786ebfe8ae0adebd67fde7221dee9702269b9.exe
    "C:\Users\Admin\AppData\Local\Temp\e0233e3d234ae8b8eb6b8ca9c9c786ebfe8ae0adebd67fde7221dee9702269b9.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1016
    • C:\Users\Admin\AppData\Local\Temp\e0233e3d234ae8b8eb6b8ca9c9c786ebfe8ae0adebd67fde7221dee9702269b9.exe
      "C:\Users\Admin\AppData\Local\Temp\e0233e3d234ae8b8eb6b8ca9c9c786ebfe8ae0adebd67fde7221dee9702269b9.exe"
      2⤵
        PID:5020
      • C:\Users\Admin\AppData\Local\Temp\e0233e3d234ae8b8eb6b8ca9c9c786ebfe8ae0adebd67fde7221dee9702269b9.exe
        "C:\Users\Admin\AppData\Local\Temp\e0233e3d234ae8b8eb6b8ca9c9c786ebfe8ae0adebd67fde7221dee9702269b9.exe"
        2⤵
          PID:1508
        • C:\Users\Admin\AppData\Local\Temp\e0233e3d234ae8b8eb6b8ca9c9c786ebfe8ae0adebd67fde7221dee9702269b9.exe
          "C:\Users\Admin\AppData\Local\Temp\e0233e3d234ae8b8eb6b8ca9c9c786ebfe8ae0adebd67fde7221dee9702269b9.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:112

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • memory/112-133-0x0000000000000000-mapping.dmp

      • memory/112-134-0x0000000000400000-0x000000000049A000-memory.dmp

        Filesize

        616KB

      • memory/112-135-0x0000000005A40000-0x0000000005FE4000-memory.dmp

        Filesize

        5.6MB

      • memory/112-136-0x0000000005490000-0x000000000552C000-memory.dmp

        Filesize

        624KB

      • memory/112-137-0x00000000055A0000-0x0000000005606000-memory.dmp

        Filesize

        408KB

      • memory/112-138-0x0000000005FF0000-0x0000000006082000-memory.dmp

        Filesize

        584KB

      • memory/112-139-0x0000000007230000-0x000000000723A000-memory.dmp

        Filesize

        40KB

      • memory/112-140-0x0000000008610000-0x0000000008660000-memory.dmp

        Filesize

        320KB

      • memory/1016-130-0x0000000000FC0000-0x00000000010FA000-memory.dmp

        Filesize

        1.2MB

      • memory/1508-132-0x0000000000000000-mapping.dmp

      • memory/5020-131-0x0000000000000000-mapping.dmp