Overview

overview

10

Static

static

b13c8cd12d...a0.exe

windows7_x64

3

b13c8cd12d...a0.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    113s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    01/05/2022, 23:19

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General

  • Target
    b13c8cd12d9b8a697202d8ee02bc96cbbdf6e9ceaafcc780e5580afcb0e58fa0.exe
  • Size 975KB
  • Sample220501-3a2zhsebd2
  • SHA256 b13c8cd12d9b8a697202d8ee02bc96cbbdf6e9ceaafcc780e5580afcb0e58fa0
  • MD5 SHA1 SHA512
Score
10/10
massloggercollectionransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\Users\Admin\AppData\Local\F95B724EDE\Log.txt

  • masslogger

Ransom Note
  • <|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.50 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: 5/2/2022 1:20:34 AM MassLogger Started: 5/2/2022 1:20:31 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\b13c8cd12d9b8a697202d8ee02bc96cbbdf6e9ceaafcc780e5580afcb0e58fa0.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 Main Payload 1 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • 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 1 IoCs

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

  • Suspicious use of SetThreadContext 1 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b13c8cd12d9b8a697202d8ee02bc96cbbdf6e9ceaafcc780e5580afcb0e58fa0.exe
    "C:\Users\Admin\AppData\Local\Temp\b13c8cd12d9b8a697202d8ee02bc96cbbdf6e9ceaafcc780e5580afcb0e58fa0.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2812
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lgcvDmn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2962.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:960
    • C:\Users\Admin\AppData\Local\Temp\b13c8cd12d9b8a697202d8ee02bc96cbbdf6e9ceaafcc780e5580afcb0e58fa0.exe
      "C:\Users\Admin\AppData\Local\Temp\b13c8cd12d9b8a697202d8ee02bc96cbbdf6e9ceaafcc780e5580afcb0e58fa0.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:4116

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        tmp2962.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\tmp2962.tmp
        • Size 1KB
        • SHA256 b0bd247802dcee1538fcf68dd82bb17e42ab6b82874b0924c01e917f813a96c8
        • MD5 SHA1 SHA512
        Submit Download

        memory/2812-130-0x0000000000DB0000-0x0000000000EAA000-memory.dmp
        Download

        memory/2812-131-0x0000000005800000-0x000000000589C000-memory.dmp
        Download

        memory/2812-132-0x0000000005E50000-0x00000000063F4000-memory.dmp
        Download

        memory/2812-133-0x0000000005940000-0x00000000059D2000-memory.dmp
        Download

        memory/2812-134-0x00000000058F0000-0x00000000058FA000-memory.dmp
        Download

        memory/2812-135-0x0000000005A40000-0x0000000005A96000-memory.dmp
        Download

        memory/4116-139-0x0000000000400000-0x000000000049A000-memory.dmp
        Download

        memory/4116-140-0x00000000052E0000-0x0000000005346000-memory.dmp
        Download

        memory/4116-141-0x0000000007D40000-0x0000000007D90000-memory.dmp
        Download