Analysis

  • max time kernel
    114s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    12-05-2022 15:36

General

  • Target

    27e541d8355650c94c1f2e9eee4c64b73101a706001b72f7a36ecd1ae75689aa.exe

  • Size

    558KB

  • MD5

    fec3d86742243379f96c7b0489c5e65c

  • SHA1

    a034110afeeec6a694e8a89318efda0d202e6331

  • SHA256

    27e541d8355650c94c1f2e9eee4c64b73101a706001b72f7a36ecd1ae75689aa

  • SHA512

    db5c3c014499fd053031ba7e9ce8337d6ac20b2805daab98b7cb02f8f24b23864c35c04d50302fe8a419ff84f405016b26e8547580d80a794f8482bfebe9824f

Malware Config

Extracted

Path

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

Family

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: 5/12/2022 5:39:32 PM MassLogger Started: 5/12/2022 5:39:20 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\27e541d8355650c94c1f2e9eee4c64b73101a706001b72f7a36ecd1ae75689aa.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> 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.

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 42 IoCs
  • 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 behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\27e541d8355650c94c1f2e9eee4c64b73101a706001b72f7a36ecd1ae75689aa.exe
    "C:\Users\Admin\AppData\Local\Temp\27e541d8355650c94c1f2e9eee4c64b73101a706001b72f7a36ecd1ae75689aa.exe"
    1⤵
    • Checks computer location settings
    • Accesses Microsoft Outlook profiles
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:4936
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
      "Powershell" Add-MpPreference -ExclusionPath '"C:\Users\Admin\AppData\Local\Temp\27e541d8355650c94c1f2e9eee4c64b73101a706001b72f7a36ecd1ae75689aa.exe"'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4676

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/4676-140-0x0000000006DC0000-0x0000000006DF2000-memory.dmp

    Filesize

    200KB

  • memory/4676-137-0x0000000004C70000-0x0000000004C92000-memory.dmp

    Filesize

    136KB

  • memory/4676-141-0x0000000070320000-0x000000007036C000-memory.dmp

    Filesize

    304KB

  • memory/4676-132-0x0000000002300000-0x0000000002336000-memory.dmp

    Filesize

    216KB

  • memory/4676-150-0x0000000007270000-0x0000000007278000-memory.dmp

    Filesize

    32KB

  • memory/4676-135-0x0000000004DB0000-0x00000000053D8000-memory.dmp

    Filesize

    6.2MB

  • memory/4676-146-0x0000000006FB0000-0x0000000006FBA000-memory.dmp

    Filesize

    40KB

  • memory/4676-138-0x0000000005550000-0x00000000055B6000-memory.dmp

    Filesize

    408KB

  • memory/4676-142-0x0000000006DA0000-0x0000000006DBE000-memory.dmp

    Filesize

    120KB

  • memory/4676-149-0x0000000007290000-0x00000000072AA000-memory.dmp

    Filesize

    104KB

  • memory/4676-148-0x0000000007180000-0x000000000718E000-memory.dmp

    Filesize

    56KB

  • memory/4676-139-0x0000000005C40000-0x0000000005C5E000-memory.dmp

    Filesize

    120KB

  • memory/4676-143-0x0000000007590000-0x0000000007C0A000-memory.dmp

    Filesize

    6.5MB

  • memory/4676-144-0x0000000006F40000-0x0000000006F5A000-memory.dmp

    Filesize

    104KB

  • memory/4676-147-0x00000000071C0000-0x0000000007256000-memory.dmp

    Filesize

    600KB

  • memory/4936-136-0x0000000005B20000-0x0000000005B86000-memory.dmp

    Filesize

    408KB

  • memory/4936-145-0x0000000005D30000-0x0000000005DC2000-memory.dmp

    Filesize

    584KB

  • memory/4936-152-0x00000000075B0000-0x0000000007600000-memory.dmp

    Filesize

    320KB

  • memory/4936-133-0x0000000005DE0000-0x0000000006384000-memory.dmp

    Filesize

    5.6MB

  • memory/4936-134-0x0000000005920000-0x00000000059BC000-memory.dmp

    Filesize

    624KB

  • memory/4936-151-0x0000000007530000-0x000000000753A000-memory.dmp

    Filesize

    40KB

  • memory/4936-130-0x00000000009A0000-0x0000000000A32000-memory.dmp

    Filesize

    584KB