Overview

overview

10

Static

static

Samples an...on.exe

windows7_x64

10

Samples an...on.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    181s
  • max time network
    207s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21/05/2022, 00:51

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General

  • Target
    Samples and Specification.exe
  • Size 845KB
  • Sample220521-a7rwlaedgr
  • SHA256 d9e8955f7aad89624502ab87b2d50a8728652e7d1c5864f3658d6e8f08d17540
  • MD5 SHA1 SHA512
Score
10/10
massloggercollectionransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\Users\Admin\AppData\Local\8236ADF044\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: 5/21/2022 3:13:33 AM MassLogger Started: 5/21/2022 3:12:55 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Samples and Specification.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| USB Spread ||> Disabled <|| Window Searcher ||> Disabled <|| Downloader ||> 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.

  • Checks computer location settings 2 TTPs 1 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 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Samples and Specification.exe
    "C:\Users\Admin\AppData\Local\Temp\Samples and Specification.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4540
    • C:\Users\Admin\AppData\Local\Temp\Samples and Specification.exe
      "{path}"
      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:1080

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        Samples and Specification.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Samples and Specification.exe.log
        • Size 685B
        • SHA256 b7724fa480f240bb6e0131973d0f085d5fb0865677f277a2a306f4fa89c89485
        • MD5 SHA1 SHA512
        Submit Download

        memory/1080-136-0x0000000000400000-0x000000000049A000-memory.dmp
        Download

        memory/1080-138-0x0000000005140000-0x00000000051A6000-memory.dmp
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        memory/1080-139-0x0000000006A60000-0x0000000006A6A000-memory.dmp
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        memory/1080-140-0x0000000006F10000-0x0000000006F60000-memory.dmp
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        memory/4540-130-0x0000000000D40000-0x0000000000E1A000-memory.dmp
        Download

        memory/4540-131-0x0000000005CF0000-0x0000000006294000-memory.dmp
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        memory/4540-132-0x00000000057E0000-0x0000000005872000-memory.dmp
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        memory/4540-133-0x0000000006490000-0x0000000006616000-memory.dmp
        Download

        memory/4540-134-0x00000000062A0000-0x000000000633C000-memory.dmp
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