Overview

overview

10

Static

static

NEWSC_37.exe

windows7_x64

10

NEWSC_37.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    112s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21/05/2022, 00:50

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General

  • Target
    NEWSC_37.exe
  • Size 1.2MB
  • Sample220521-a69d9abdd7
  • SHA256 a4df7bd8daff5a4723055c7589244e1719c45223f09f42b06a621aad5ee1f2f4
  • MD5 SHA1 SHA512
Score
10/10
massloggercollectionransomwarespywarestealer

Malware Config

Extracted

Path

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

  • masslogger

Ransom Note
  • <|| v2.4.0.0 ||> 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: 5/21/2022 1:13:37 AM MassLogger Started: 5/21/2022 1:13:34 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\VideoLAN\vlc.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Downloader ||> Disabled <|| Binder ||> 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

Extracted

Credentials
  • Protocol

    smtp
  • Host

    smtp.gmail.com
  • Port

    587
  • Username

    [email protected]
  • Password

    massweek1960

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 2 IoCs
  • Checks computer location settings 2 TTPs 2 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.

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 42 IoCs
    collection
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 37 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEWSC_37.exe
    "C:\Users\Admin\AppData\Local\Temp\NEWSC_37.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4896
    • C:\Users\Admin\AppData\Local\Temp\NEWSC_37.exe
      "{path}"
      2⤵
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1376
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn vlc.exe /tr '"C:\Users\Admin\VideoLAN\vlc.exe"' & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3196
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn vlc.exe /tr '"C:\Users\Admin\VideoLAN\vlc.exe"'
          4⤵
          • Creates scheduled task(s)
          PID:5052
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp68BC.tmp.bat""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3728
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • Delays execution with timeout.exe
          PID:2044
        • C:\Users\Admin\VideoLAN\vlc.exe
          "C:\Users\Admin\VideoLAN\vlc.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:368
          • C:\Users\Admin\VideoLAN\vlc.exe
            "{path}"
            5⤵
            • Executes dropped EXE
            • 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:3896

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        NEWSC_37.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\NEWSC_37.exe.log
        • Size 1KB
        • SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
        • MD5 SHA1 SHA512
        Submit Download

        tmp68BC.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp68BC.tmp.bat
        • Size 140B
        • SHA256 07d07ec20ac99c915dec3b9858f3c7458c03226db70ab42388ab95bf0a3be4d1
        • MD5 SHA1 SHA512
        Submit Download

        vlc.exe
        • Path C:\Users\Admin\VideoLAN\vlc.exe
        • Size 1.2MB
        • SHA256 a4df7bd8daff5a4723055c7589244e1719c45223f09f42b06a621aad5ee1f2f4
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        vlc.exe
        • Path C:\Users\Admin\VideoLAN\vlc.exe
        • Size 1.2MB
        • SHA256 a4df7bd8daff5a4723055c7589244e1719c45223f09f42b06a621aad5ee1f2f4
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        vlc.exe
        • Path C:\Users\Admin\VideoLAN\vlc.exe
        • Size 1.2MB
        • SHA256 a4df7bd8daff5a4723055c7589244e1719c45223f09f42b06a621aad5ee1f2f4
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/1376-138-0x0000000005070000-0x00000000050D6000-memory.dmp
        Download

        memory/1376-136-0x0000000000400000-0x00000000004B8000-memory.dmp
        Download

        memory/3896-150-0x0000000007FB0000-0x0000000008000000-memory.dmp
        Download

        memory/4896-130-0x0000000000B80000-0x0000000000CAE000-memory.dmp
        Download

        memory/4896-134-0x000000000DD90000-0x000000000DE2C000-memory.dmp
        Download

        memory/4896-133-0x0000000005660000-0x000000000566A000-memory.dmp
        Download

        memory/4896-132-0x00000000056A0000-0x0000000005732000-memory.dmp
        Download

        memory/4896-131-0x0000000005BB0000-0x0000000006154000-memory.dmp
        Download