Trojan:Win32/PassView.BD is a credential-stealing trojan that targets stored passwords on Windows systems. This malware variant belongs to a family of password-dumping trojans that specifically exploit legitimate password recovery tools or mimic their functionality to harvest login credentials from browsers, email clients, FTP programs, and other applications. Once installed, it operates silently in the background, collecting sensitive authentication data and transmitting it to remote attackers who can then access your online accounts, financial services, and private communications.
This trojan is particularly dangerous because it doesn't rely on complex exploits—instead, it leverages the fact that most users store passwords in their browsers and applications for convenience. The malware essentially automates what a legitimate password recovery tool would do, but without your knowledge or consent, making it an effective tool for identity theft and account takeover attacks.
Threat Profile
| Threat Name | Trojan:Win32/PassView.BD |
| Threat Type | Credential Stealer, Password Theft Trojan, Infostealer |
| Family | PassView trojan family (password dumping trojans) |
| Aliases | Win32/PSW.PassView, PWS:Win32/PassView, Trojan.PasswordStealer.PassView (varies by vendor) |
| Platform | Windows 7, 8, 8.1, 10, 11 (32-bit and 64-bit) |
| Primary Target Data | Browser passwords, email credentials, FTP passwords, application login data, Windows credentials |
| Distribution Methods | Software bundles, fake installers, malicious email attachments, exploit kits, pirated software cracks |
| Persistence Mechanisms | Registry Run keys, scheduled tasks, startup folder entries (typical for this family) |
| Network Behavior | Exfiltrates data via HTTP/HTTPS POST requests to command-and-control servers; may use encrypted channels |
| Payload Capabilities | Password extraction, system profiling, screenshot capture (in some variants), additional malware download |
| Detection Evasion | Fileless execution (some variants), process injection, anti-analysis techniques, polymorphic code |
| Removal Difficulty | Moderate — requires safe mode operation and thorough registry cleaning; manual removal possible but challenging |
How It Spreads
Trojan:Win32/PassView.BD typically arrives on systems through deceptive distribution channels that exploit user trust or inattention. The most common infection vector involves software bundling, where the trojan is packaged alongside seemingly legitimate freeware or shareware applications. When users rush through installation wizards without reading the fine print or unchecking pre-selected options, they inadvertently authorize the trojan's installation. This bundling approach is particularly effective because the host application often functions as advertised, leaving users unaware that malicious code came along for the ride.
Another prevalent distribution method involves fake software installers and updates distributed through compromised websites, malicious advertisements, or social engineering campaigns. Users searching for popular software downloads, system utilities, or media codecs may encounter lookalike websites offering infected installers. These malicious installers are sometimes pixel-perfect replicas of legitimate software packaging, complete with authentic-looking icons, splash screens, and license agreements. The trojan executes during or immediately after installation, establishing persistence before the user realizes anything is amiss.
Email-based distribution remains a reliable infection pathway for this family. Attackers send targeted phishing emails with infected attachments disguised as invoices, shipping notifications, tax documents, or business proposals. These attachments may be executable files with double extensions (like "invoice.pdf.exe"), archive files containing malicious payloads, or documents with embedded macros that download and execute the trojan when opened.
- Bundled freeware and shareware — hidden installers in download managers, system optimizers, and media converters
- Fake software cracks and keygens — pirated software activation tools frequently contain trojans
- Malicious email attachments — executable files, infected Office documents with macros, compressed archives
- Drive-by downloads — exploit kits on compromised or malicious websites that download payloads without user interaction
- Fake update notifications — browser pop-ups claiming Java, Flash, or codec updates are required
- Malvertising campaigns — malicious advertisements on legitimate websites that redirect to infection pages
- Infected USB drives — autorun functionality or social engineering prompts users to execute malware
What It Does On Your Machine
Upon successful installation, Trojan:Win32/PassView.BD immediately begins profiling your system and extracting stored credentials. The trojan typically drops its main executable into a concealed location in your user profile directory, often using a randomly generated folder name or GUID to avoid detection. From this location, it launches enumeration processes that scan common storage locations where applications save login credentials. This includes browser profile folders (Chrome, Firefox, Edge, Opera), email client data stores (Outlook, Thunderbird), FTP client configuration files (FileZilla, WinSCP), and Windows Credential Manager.
The password extraction process exploits the fact that most applications store credentials in encrypted but recoverable formats. Browsers, for example, encrypt saved passwords using Windows Data Protection API (DPAPI), which protects data from other users but not from processes running under your own user account. The trojan runs with your privileges and can therefore decrypt these stored passwords just as a legitimate password recovery tool would. It systematically iterates through browser profiles, extracts the encryption keys, decrypts the password databases, and compiles comprehensive lists of websites, usernames, and associated passwords. The same process applies to email clients, FTP programs, and other applications that offer "remember password" functionality.
After collecting credentials, the trojan packages this data along with system information (computer name, username, IP address, operating system version) and transmits it to the attacker's command-and-control server. This exfiltration typically occurs over HTTP or HTTPS connections to make the traffic appear normal and blend with legitimate web browsing activity. Some variants encrypt the stolen data before transmission to avoid detection by network monitoring tools. The entire credential theft cycle can complete in seconds to minutes, often before security software recognizes the threat.
Beyond credential theft, many PassView variants establish persistence mechanisms to ensure they survive reboots and continue monitoring for new passwords. They may install themselves as scheduled tasks that run at system startup or user login, add registry Run keys that launch the trojan automatically, or inject code into legitimate system processes to evade detection. Some sophisticated variants also include keylogging capabilities, screenshot capture functionality, or the ability to download and execute additional malware payloads, transforming the initial infection into a multi-stage compromise.
Manual Removal — Step by Step
Disconnect from the Network Immediately
Before attempting removal, physically disconnect your computer from the internet by unplugging the Ethernet cable or disabling Wi-Fi. This prevents the trojan from transmitting any additional data, receiving instructions from its command server, or downloading supplementary malware. Work offline throughout the entire removal process.
Boot into Safe Mode with Networking
Restart your computer and boot into Safe Mode with Networking. On Windows 10/11, hold Shift while clicking Restart, then navigate to Troubleshoot > Advanced Options > Startup Settings > Restart, and press F5. Safe Mode loads only essential system processes, preventing the trojan from launching automatically and making it easier to identify and remove malicious processes.
Identify and Terminate Malicious Processes
Open Task Manager (Ctrl+Shift+Esc) and examine running processes carefully. Look for unfamiliar processes with names that mimic legitimate Windows services (like "svchost.exe" running from unusual locations), processes consuming network bandwidth, or executables running from temporary folders or user profile directories. Right-click suspicious processes, select "Open file location" to verify the path, then terminate the process if it appears malicious. Document the file location for later deletion.
Remove Persistence Mechanisms
Open Registry Editor (type "regedit" in the Start menu) and navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run and HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run. Look for unfamiliar entries pointing to executables in AppData folders or temporary directories. Delete suspicious entries, but photograph them first in case you need to restore legitimate entries. Next, open Task Scheduler (taskschd.msc) and examine scheduled tasks under Microsoft\Windows for anything unfamiliar or created recently. Delete tasks that reference unknown executables.
Delete the Trojan Files and Folders
Navigate to the file locations you identified in Step 3. Common locations include %LOCALAPPDATA%, %APPDATA%, and %TEMP% folders. Delete the entire folder containing the malicious executable (often named with a GUID like {4B2C8E9D-...}). If Windows prevents deletion because the file is in use, you haven't successfully terminated the process—return to Step 3. Also check your Startup folder at %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup and remove any suspicious shortcuts.
Scan with Reputable Anti-Malware Tools
Download and run Malwarebytes Free (from a clean computer if possible, transferring via USB) and perform a full system scan. Follow up with a scan using Windows Defender offline mode (Settings > Update & Security > Windows Security > Virus & Threat Protection > Scan Options > Microsoft Defender Offline Scan). These tools often catch remnants, registry entries, or additional malware components that manual removal misses. Quarantine or delete all detected threats.
Reset Web Browsers and Clear Stored Data
Since this trojan specifically targets browser credentials, reset each browser to default settings. In Chrome, go to Settings > Reset Settings > Restore settings to their original defaults. In Firefox, type "about:support" in the address bar and click "Refresh Firefox." In Edge, go to Settings > Reset Settings > Restore settings to their default values. This removes any malicious extensions or settings changes the trojan may have implemented. After resetting, clear all saved passwords, cookies, and cached data.
Change All Passwords from a Clean Device
Because your credentials have been compromised, you must change passwords for all accounts—prioritizing email, banking, social media, and any accounts with payment information. Do this from a different, known-clean computer or mobile device, not from the infected machine. Enable two-factor authentication on every account that supports it. Consider this a complete credential breach; assume attackers have copies of everything that was stored on this computer.
Reboot Normally and Verify Complete Removal
Restart your computer in normal mode and observe its behavior. Check Task Manager for suspicious processes, verify that deleted registry entries haven't reappeared, and confirm that no unknown scheduled tasks exist. Run another quick scan with your anti-malware tool to ensure the infection hasn't resurged. Monitor your system and network activity for the next several days.
Monitor Financial Accounts and Credit Reports
If you used this computer to access banking, credit cards, or financial services, contact your financial institutions to alert them of the compromise. Monitor all accounts closely for unauthorized transactions. Consider placing a fraud alert or credit freeze with the major credit bureaus. Password-stealing trojans often sell credentials on underground markets, meaning fraudulent activity might not appear immediately but could surface weeks or months later.
Prevention
- Download software only from official sources. Avoid third-party download sites, torrent trackers, and "free software" repositories that bundle installers with additional programs. When installing any software, always choose "Custom" or "Advanced" installation modes and carefully review each screen for pre-checked boxes that authorize additional software installations.
- Keep Windows and all applications updated. Enable automatic updates for your operating system and critical applications. Security patches close vulnerabilities that exploit kits and drive-by downloads use to install trojans without user interaction. Outdated software is the single most common entry point for automated malware distribution.
- Use a password manager instead of browser password storage. Dedicated password managers like Bitwarden, 1Password, or KeePass employ stronger encryption and additional security layers that make credential theft significantly more difficult. They also make it practical to use unique, complex passwords for every account, limiting damage if one set of credentials is compromised.
- Deploy comprehensive security software and keep it current. Use reputable antivirus/anti-malware software with real-time protection enabled. Windows Defender is adequate for most users if kept updated, but consider supplementing it with periodic scans from Malwarebytes. Configure your security software to scan downloads automatically and to block known malicious websites.
- Exercise extreme caution with email attachments. Never open attachments from unknown senders, and be skeptical even of attachments from known contacts if the email seems unusual. Verify unexpected attachments through a separate communication channel before opening them. Disable macros in Office documents by default and only enable them for trusted, verified documents when absolutely necessary.
- Enable two-factor authentication on all critical accounts. Even if credentials are stolen, two-factor authentication (2FA) prevents attackers from accessing accounts without the second verification factor. Use authenticator apps or hardware tokens rather than SMS-based 2FA when possible, as SMS can be intercepted through SIM-swapping attacks.
- Maintain separate user accounts with limited privileges. Don't use an administrator account for daily activities. Create a standard user account for web browsing, email, and routine tasks. Malware running under limited user privileges has restricted access to system files and other users' data, containing potential damage.
- Regularly audit installed programs and browser extensions. Monthly, review the list of installed programs in Windows Settings > Apps and remove anything unfamiliar or unused. Check browser extensions for items you don't recognize or didn't intentionally install. Trojans sometimes install auxiliary components that persist even after the main infection is removed.
When Computer Repair Roswell removes malware from your system, we stand behind our work with a 90-day warranty. If the same infection returns within three months, we'll remove it again at no additional charge. We don't just delete files—we identify how the infection occurred, close the security gaps, and ensure your system is properly protected going forward. That's the difference between a quick fix and a professional cleaning.
Bring It In
Credential-stealing trojans like PassView.BD represent a serious threat that extends beyond your computer to every online account you've accessed from the infected machine. Manual removal is possible for technically proficient users, but the consequences of incomplete removal or missed persistence mechanisms can be severe—continued data theft, reinfection, or compromised accounts you don't discover until fraudulent charges appear. Professional malware removal isn't just about deleting files; it's about thorough forensic analysis to determine what was stolen, identifying all infection components including ones that hide from standard scans, and hardening your system against reinfection.
Computer Repair Roswell has removed thousands of trojan infections from systems across the metro Atlanta area. Our technicians use enterprise-grade diagnostic tools, offline scanning environments, and proven removal protocols that eliminate infections completely while preserving your data. We'll also help you assess the damage, change credentials safely, and implement security measures that actually work for your specific usage patterns. Don't gamble with your financial security and personal data—bring your computer to our Roswell location at 1100 Alpharetta Street or call (770) 667-9487 to schedule same-day service. We're open Monday through Saturday and offer free diagnostics to determine the extent of infection before you commit to repair.