Analysis

  • max time kernel
    150s
  • max time network
    114s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    02/09/2020, 15:08

General

  • Target
    10a7368cf32cc153e5410f76decbfddf.exe
  • Size 1011KB
  • Sample200902-v2z6rm9bmj
  • SHA256 0af074fb50cdce569d93eca7b4c4ba00bd6aca46ebf048be2b41e1d42446f0a9
  • MD5 SHA1 SHA512

Malware Config

Extracted

Path
  • C:\Users\Admin\AppData\Local\480F96756F\Log.txt

  • 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: Persocon Processor 2.5+ GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 9/2/2020 3:04:48 PM MassLogger Started: 9/2/2020 3:04:45 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Roaming\appdata\ghjxdfgh.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 log file 1 IoCs

    Detects a log file produced by MassLogger.

  • Executes dropped EXE 3 IoCs
  • UPX packed file 6 IoCs

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

  • Drops startup file 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Modifies data under HKEY_USERS 5 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2560 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\10a7368cf32cc153e5410f76decbfddf.exe
    "C:\Users\Admin\AppData\Local\Temp\10a7368cf32cc153e5410f76decbfddf.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Drops startup file
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      PID:212
      • C:\Users\Admin\AppData\Roaming\appdata\ghjxdfgh.exe
        "C:\Users\Admin\AppData\Roaming\appdata\ghjxdfgh.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1304
        • C:\Users\Admin\AppData\Roaming\appdata\ghjxdfgh.exe
          "C:\Users\Admin\AppData\Roaming\appdata\ghjxdfgh.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:676
        • C:\Users\Admin\AppData\Roaming\appdata\ghjxdfgh.exe
          "C:\Users\Admin\AppData\Roaming\appdata\ghjxdfgh.exe" 2 676 259258453
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:1052
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:3784

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/676-12-0x0000000000400000-0x0000000000541000-memory.dmp

        memory/676-20-0x0000000004E10000-0x0000000004E11000-memory.dmp

        memory/676-26-0x00000000065B0000-0x00000000065BF000-memory.dmp

        memory/676-25-0x0000000007490000-0x0000000007491000-memory.dmp

        memory/676-10-0x0000000000400000-0x0000000000541000-memory.dmp

        memory/676-24-0x00000000062A0000-0x00000000062A1000-memory.dmp

        memory/676-23-0x00000000052B0000-0x00000000052B1000-memory.dmp

        memory/676-13-0x00000000022F0000-0x000000000238A000-memory.dmp

        memory/676-22-0x0000000004EF0000-0x0000000004EF1000-memory.dmp

        memory/676-15-0x0000000002212000-0x0000000002213000-memory.dmp

        memory/676-16-0x0000000073040000-0x000000007372E000-memory.dmp

        memory/676-19-0x00000000048D0000-0x00000000048D1000-memory.dmp

        memory/676-6-0x0000000000400000-0x0000000000541000-memory.dmp

        memory/676-21-0x0000000004EB0000-0x0000000004EEE000-memory.dmp

        memory/1052-14-0x0000000000400000-0x0000000000503000-memory.dmp

        memory/1304-5-0x0000000000400000-0x0000000000503000-memory.dmp

        memory/1656-0-0x0000000000400000-0x0000000000503000-memory.dmp