Analysis

  • max time kernel
    94s
  • max time network
    171s
  • platform
    windows7_x64
  • resource
    win7-20220331-en
  • submitted
    14-04-2022 13:33

General

  • Target

    fd9b86e1c1cbb3597f1f97a3b8d6ca3fa6054fea738bfe94e2d7593b907f8a5f.exe

  • Size

    1.3MB

  • MD5

    f7e371f630e60e348a82878dcc32ec12

  • SHA1

    1223b3f7eb9281667e90e052f2b064d24fc4a292

  • SHA256

    fd9b86e1c1cbb3597f1f97a3b8d6ca3fa6054fea738bfe94e2d7593b907f8a5f

  • SHA512

    64f5a9102201519224d9270000a68e39890bacd09442c86b1beb6a31e732940ef495ab0198cde50906d5e6ff3344b963366fa58fe1c783d4468546a713bb4627

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\2292315540\Log.txt

Family

masslogger

Ransom Note
<|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.50 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 4/14/2022 4:49:58 PM MassLogger Started: 4/14/2022 4:49:38 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\fd9b86e1c1cbb3597f1f97a3b8d6ca3fa6054fea738bfe94e2d7593b907f8a5f.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| USB Spread ||> 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 Main Payload 6 IoCs
  • 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 35 IoCs
  • Adds Run key to start application 2 TTPs 1 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 use of SetThreadContext 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fd9b86e1c1cbb3597f1f97a3b8d6ca3fa6054fea738bfe94e2d7593b907f8a5f.exe
    "C:\Users\Admin\AppData\Local\Temp\fd9b86e1c1cbb3597f1f97a3b8d6ca3fa6054fea738bfe94e2d7593b907f8a5f.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:836
    • C:\Users\Admin\AppData\Local\Temp\fd9b86e1c1cbb3597f1f97a3b8d6ca3fa6054fea738bfe94e2d7593b907f8a5f.exe
      "C:\Users\Admin\AppData\Local\Temp\fd9b86e1c1cbb3597f1f97a3b8d6ca3fa6054fea738bfe94e2d7593b907f8a5f.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:1332

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/836-54-0x0000000000CB0000-0x0000000000E00000-memory.dmp

    Filesize

    1.3MB

  • memory/836-55-0x0000000000B70000-0x0000000000C08000-memory.dmp

    Filesize

    608KB

  • memory/836-56-0x00000000002C0000-0x00000000002DC000-memory.dmp

    Filesize

    112KB

  • memory/1332-57-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1332-58-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1332-60-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1332-61-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1332-62-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1332-65-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1332-67-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1332-68-0x0000000000680000-0x00000000006C4000-memory.dmp

    Filesize

    272KB

  • memory/1332-69-0x0000000004485000-0x0000000004496000-memory.dmp

    Filesize

    68KB

  • memory/1332-70-0x0000000000BE0000-0x0000000000BF4000-memory.dmp

    Filesize

    80KB