Overview

overview

10

Static

static

bd229dbb74...ab.exe

windows7_x64

10

bd229dbb74...ab.exe

windows10_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    20/09/2020, 03:59

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General

  • Target
    bd229dbb74bdb0ff7b1fcd5946fbf9ab.exe
  • Size 1.1MB
  • Sample200920-2fbv8a4h12
  • SHA256 cc487ddc590416f6a94cc808247bbdeaf25b35cf01c41f5be2024049d7e2f61d
  • MD5 SHA1 SHA512
Score
10/10
ransomwareupxspywarestealermasslogger

Malware Config

Extracted

Path

  • C:\Users\Admin\AppData\Local\E2C1E8F1FA\Log.txt

  • masslogger

Ransom Note
  • <|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.51 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: 9/20/2020 4:03:04 AM MassLogger Started: 9/20/2020 4:02:57 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.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

  • MassLogger

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

    stealerspywaremasslogger
  • 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.

    upx
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spyware
  • 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
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 790 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bd229dbb74bdb0ff7b1fcd5946fbf9ab.exe
    "C:\Users\Admin\AppData\Local\Temp\bd229dbb74bdb0ff7b1fcd5946fbf9ab.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:892
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Drops startup file
      • Loads dropped DLL
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      PID:1840
      • C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe
        "C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1332
        • C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe
          "C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1744
        • C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe
          "C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe" 2 1744 259266641
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:1632

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/892-0-0x0000000000400000-0x0000000000517000-memory.dmp
        Download

        memory/1332-7-0x0000000000400000-0x0000000000517000-memory.dmp
        Download

        memory/1632-21-0x0000000000400000-0x0000000000517000-memory.dmp
        Download

        memory/1744-16-0x0000000001E60000-0x0000000001EFA000-memory.dmp
        Download

        memory/1744-9-0x0000000000400000-0x0000000000541000-memory.dmp
        Download

        memory/1744-14-0x0000000000400000-0x0000000000541000-memory.dmp
        Download

        memory/1744-13-0x0000000000400000-0x0000000000541000-memory.dmp
        Download

        memory/1744-17-0x0000000000252000-0x0000000000253000-memory.dmp
        Download

        memory/1744-18-0x0000000000320000-0x00000000003B4000-memory.dmp
        Download

        memory/1744-20-0x0000000074450000-0x0000000074B3E000-memory.dmp
        Download

        memory/1744-24-0x0000000004AD0000-0x0000000004B0E000-memory.dmp
        Download

        memory/1744-25-0x0000000005D60000-0x0000000005D6F000-memory.dmp
        Download

        memory/1840-2-0x00000000000D0000-0x00000000000D1000-memory.dmp
        Download