Analysis

  • max time kernel
    66s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 00:53

General

  • Target

    Inquiry List Details.exe

  • Size

    868KB

  • MD5

    18441e9c6156df94b21556dab4ef4701

  • SHA1

    25b9a51950b21e8d86b56770a9d23225b1a5e40e

  • SHA256

    fb248d3c4b08dd0bef37e565fbe078a57f13b5214b8cafeccf42bdd50767678d

  • SHA512

    3719e583e8703f950fa9dc0c62badc4781aa6b5f2c585b1817cfe7f6cba39ba9f89b7f3571350aad60fe50c24b9f9c37ab1e5672aaf9b0ebe1361fac4ce833c4

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\3B8E3C2477\Log.txt

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> 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: 5/21/2022 3:16:59 AM MassLogger Started: 5/21/2022 3:16:49 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Inquiry List Details.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 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.

  • Obfuscated with Agile.Net obfuscator 2 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • 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
  • 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 26 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\Inquiry List Details.exe
    "C:\Users\Admin\AppData\Local\Temp\Inquiry List Details.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1016
    • C:\Users\Admin\AppData\Local\Temp\Inquiry List Details.exe
      "C:\Users\Admin\AppData\Local\Temp\Inquiry List Details.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:2024

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1016-54-0x00000000008E0000-0x00000000009C0000-memory.dmp

    Filesize

    896KB

  • memory/1016-55-0x0000000004900000-0x00000000049DA000-memory.dmp

    Filesize

    872KB

  • memory/1016-56-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

    Filesize

    8KB

  • memory/1016-57-0x0000000000220000-0x0000000000230000-memory.dmp

    Filesize

    64KB

  • memory/1016-58-0x00000000004F0000-0x0000000000502000-memory.dmp

    Filesize

    72KB

  • memory/2024-59-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2024-60-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2024-62-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2024-63-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2024-65-0x00000000004B306E-mapping.dmp

  • memory/2024-64-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2024-67-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2024-69-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2024-70-0x00000000020E0000-0x0000000002158000-memory.dmp

    Filesize

    480KB

  • memory/2024-72-0x0000000004DC5000-0x0000000004DD6000-memory.dmp

    Filesize

    68KB