Analysis

  • max time kernel
    152s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7v200722
  • submitted
    27/07/2020, 06:43

General

  • Target
    CIC.exe
  • Size 889KB
  • Sample200727-cmdbc28er6
  • SHA256 d2702fb7486d03dab4633bf90d21b550fe27848b6263797eaa3d93393421af4a
  • MD5 SHA1 SHA512

Malware Config

Extracted

Path
  • C:\Users\Admin\AppData\Local\42EF15E83D\Log.txt

  • masslogger

Ransom Note
  • <|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.13 Location: United States Windows OS: Microsoft Windows 7 Professional 64bit Windows Serial Key: HYF8J-CVRMY-CM74G-RPHKF-PW487 CPU: Persocon Processor 2.5+ GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 7/27/2020 8:43:33 AM MassLogger Started: 7/27/2020 8:43:25 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Roaming\appdata\gtguihjky.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| USB Spread ||> Disabled <|| Downloader ||> 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

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Looks up external IP address via web service 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Executes dropped EXE 3 IoCs
  • NTFS ADS 1 IoCs
  • Drops startup file 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetThreadContext 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 1371 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

Processes

  • C:\Users\Admin\AppData\Local\Temp\CIC.exe
    "C:\Users\Admin\AppData\Local\Temp\CIC.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious behavior: EnumeratesProcesses
    PID:848
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Loads dropped DLL
      • NTFS ADS
      • Drops startup file
      • Suspicious use of WriteProcessMemory
      PID:1284
      • C:\Users\Admin\AppData\Roaming\appdata\gtguihjky.exe
        "C:\Users\Admin\AppData\Roaming\appdata\gtguihjky.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        PID:1400
        • C:\Users\Admin\AppData\Roaming\appdata\gtguihjky.exe
          "C:\Users\Admin\AppData\Roaming\appdata\gtguihjky.exe"
          4⤵
          • Suspicious use of SetWindowsHookEx
          • Executes dropped EXE
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious use of AdjustPrivilegeToken
          PID:1436
        • C:\Users\Admin\AppData\Roaming\appdata\gtguihjky.exe
          "C:\Users\Admin\AppData\Roaming\appdata\gtguihjky.exe" 2 1436 82087
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:364

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1284-1-0x0000000000090000-0x0000000000091000-memory.dmp

        memory/1436-7-0x0000000000400000-0x0000000000541000-memory.dmp

        memory/1436-12-0x0000000000400000-0x0000000000541000-memory.dmp

        memory/1436-13-0x0000000000400000-0x0000000000541000-memory.dmp

        memory/1436-14-0x0000000001FC0000-0x000000000205A000-memory.dmp

        memory/1436-15-0x0000000000662000-0x0000000000663000-memory.dmp

        memory/1436-16-0x0000000000220000-0x00000000002B3000-memory.dmp