Concerned about the Bloom virus affecting your system? This comprehensive guide provides detailed information about the Bloom.exe malware, how to identify if you’re infected, and step-by-step removal instructions. Bloom is a sophisticated trojan that can compromise your system’s security while remaining largely undetected.
What Is Bloom Malware?
Bloom.exe is a malicious executable file associated with a sophisticated Trojan Horse variant. First discovered in late 2023, this malware is engineered to gain administrative privileges on infected systems without displaying obvious symptoms. Security researchers classify it as a multi-stage threat that combines elements of adware, スパイウェア, and remote access capabilities.
| Bloom Virus Technical Details | |
|---|---|
| 分類 | Trojan Horse / アドウェア / Spyware |
| Discovery Date | Q4 2023 |
| 影響を受けるシステム | ウィンドウズ 10, 11 (all versions) |
| Main Executable | ブルーム.exe |
| Distribution Methods |
|
| Threat Level | 中から高 |
| Removal Difficulty | Moderate (requires multiple approaches) |
The Bloom trojan operates stealthily in the background, establishing persistence mechanisms that allow it to survive system reboots. 有効化されると, it can perform various malicious activities, 含む:
- Collecting sensitive user information and browsing habits
- Displaying intrusive advertisements and pop-ups
- Redirecting web searches to sponsored or malicious sites
- Installing additional unwanted software without consent
- Creating backdoor access for remote attackers
ソース: Microsoft Security Intelligence and Trojan Remover malware analysis lab data (Q1 2024)
How Bloom.exe Infects Your Computer
The Bloom malware uses several sophisticated distribution techniques to infiltrate systems. Understanding these infection vectors is crucial for both removal and future prevention:
Primary Infection Methods
- Software Bundling: The most common distribution method (38% of infections) involves packaging Bloom with legitimate-looking free software. When users install the free application, Bloom is secretly installed alongside it.
- Fake Update Notifications: Bloom may disguise itself as a critical system or software update. These deceptive notifications often mimic legitimate Windows or application updates.
- 悪意のある広告: Clicking on compromised advertisements can trigger drive-by downloads that install Bloom without user consent.
- 電子メールの添付ファイル: Similar to other trojans, Bloom can spread through malicious email attachments, often disguised as important documents.
Signs Your Computer Is Infected with Bloom Virus
Detecting Bloom can be challenging due to its stealthy nature, but watch for these telltale signs of infection:
- Unexpected website redirects while browsing
- Frequent pop-up advertisements, especially when no browser is open
- System slowdowns and performance issues
- Unknown processes in Task Manager, particularly “ブルームテック Copyright © 無断複写・転載を禁じます” そして “ブルームアプリ© 2024“
- New browser extensions or toolbars installed without permission
- Increased network activity when the computer should be idle
- Antivirus programs being disabled or unable to update
Technical Analysis of Bloom Malware
妥協の指標 (IOC)
Security professionals can identify Bloom infections through these specific indicators:
| Indicator Type | 詳細 |
|---|---|
| ファイルパス |
|
| レジストリエントリ |
|
| ネットワークインジケーター |
|
| ファイルハッシュ (SHA-256) |
a8e7b2f9d25c4e6b87c936fb24a5d78e9e12c5b87d3c0f5a2e7b5b8a7c5b8a7ce5c9b8a7c6d5e4f3a2b1c0d9e8f7a6b5c4d3e2f1a0b9c8d7e6f5a4b3c2d1e0f
|
System Modifications
Once executed, Bloom makes several persistence and concealment modifications:
- Multiple Component Installation: Bloom installs multiple components across the system to ensure survivability if one component is detected and removed.
- Registry Modifications: The malware adds registry keys to ensure it starts automatically with Windows. It modifies Windows Defender settings to exclude its own files from scanning.
- Scheduled Tasks: Creates scheduled tasks with misleading names like “WindowsUpdateCheck” to execute its components regularly.
- DLL Injection: Uses DLL injection techniques to insert malicious code into legitimate processes, 検出をより困難にする.
How to Remove Bloom.exe Virus from Windows
Removing Bloom requires a multi-staged approach due to its various persistence mechanisms. Follow these methods to completely eliminate the infection from your system:
Method 1: Manual Removal Process
ステップ 1: Windows PC から Bloom をアンインストールする
初め, remove any visible Bloom components through the standard Windows uninstallation process:
- 開ける コントロールパネル Windowsで 11/10 by typing “コントロールパネル” in the search box and select “View by: Category”
- クリック プログラムをアンインストールする 下 プログラムと機能 セクション
- Look for any entries containing “咲く”, “BloomTech”, or other suspicious recently installed programs
- Right-click the suspicious entries and select Uninstall
- Follow the uninstallation prompts to completion
ステップ 2: Remove Bloom Components from File System
- プレス 勝つ + R to open Run dialog
- タイプ
%appdata%そしてEnterを押してください - Look for a folder named “咲く” and delete it permanently
- Return to Run dialog, タイプ
%programfiles%そしてEnterを押してください - Look for and delete any “BloomTech” or similar suspicious folders
- Open Run again, タイプ
%temp%and delete any files beginning with “BL_”
ステップ 3: Remove Bloom from the Registry
WARNING: Editing the registry incorrectly can cause serious system problems. Proceed with caution.
- プレス 勝つ + R, タイプ
regedit, and press Enter to open Registry Editor - プレス Ctrl + F, タイプ “咲く”, クリックします Find Next
- Delete any entries related to Bloom that are found
- Navigate to and check these specific registry locations for malicious entries:
HKEY_CURRENT_USER\Software\Bloom HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce - Remove any suspicious startup entries referring to Bloom or BloomTech
ステップ 4: Remove Bloom Scheduled Tasks
- プレス 勝つ + R, タイプ
taskschd.msc, and press Enter to open Task Scheduler - Browse through the Task Scheduler Library, looking for any suspicious tasks, especially those created recently
- Right-click on suspicious tasks and select Delete
Method 2: Remove Bloom Using Trojan Remover
For a more thorough and automated removal process, Trojan Remover is highly effective at eliminating the Bloom malware and all its components:
ステップ 1: Boot into Safe Mode with Networking
To prevent Bloom from interfering with the removal process, boot your system in Safe Mode with Networking:
- Click the Start menu and select the Power button
- Hold down the Shift key while clicking Restart
- Select Troubleshoot → Advanced options → Startup Settings → Restart
- After your computer restarts, プレス 5 or F5 to select “セーフモードとネットワーク”
ステップ 2: Install and Run Trojan Remover
セーフモードに1回, download and run Trojan Remover to scan for and remove the Bloom infection:
- Download Trojan Remover from the official website
- Install the program and activate the free trial for full functionality
- Launch Trojan Remover and select “Full System Scan” from the main interface
ステップ 3: Complete the Removal Process
After the scan completes, Trojan Remover will identify all Bloom-related threats:
- Review the list of detected threats, which should include Bloom components
- Ensure all detections are selected for removal (this is usually the default action)
- クリック “Remove Selected” to eliminate all Bloom-related files and registry entries
- Restart your computer when prompted to complete the removal process
スキャン後, you’ll see a list of detected threats with recommended actions. The program will suggest removal for all Bloom-related components. You can customize these actions if needed.
ステップ 4: Verify Complete Removal
To ensure Bloom has been completely removed from your system:
- Restart your computer in normal mode (not Safe Mode)
- Run another full system scan with Trojan Remover
- If no additional threats are detected, your system is clean
- If more threats are found, remove them and repeat the verification process
How to Prevent Bloom Virus and Similar Infections
To protect your system from Bloom and similar malware in the future, implement these security practices:
| Prevention Strategy | Implementation |
|---|---|
| Software Sources | Only download software from official websites or reputable sources. Be wary of “free” versions of paid software. |
| カスタムインストール | Always choose “カスタム” または “高度な” installation options to decline additional bundled software. |
| Update Management | Only update software through official channels. Be suspicious of update notifications that appear outside of applications. |
| Ad Blockers | Use reputable ad-blocking extensions in your browsers to prevent malvertising infections. |
| Email Safety | Never open attachments from unknown senders and verify the sender before opening attachments from known contacts. |
| System Protection | Keep Windows and security software updated. Create system restore points before installing new software. |
関連する脅威
Bloom is part of a broader ecosystem of trojans and potentially unwanted applications. Understanding these related threats can help improve your overall security posture:
- トロイの木馬:win32/wacatac – Another sophisticated trojan with similar behavior patterns that targets user data
- トロイの木馬:Win32/カスデット!RFN – A related threat that employs similar persistence techniques
- DWM Crashes in Windows – Performance issues that may result from malware infections like Bloom
結論
The Bloom virus represents a significant threat to Windows users due to its stealthy nature and multiple attack vectors. By following the comprehensive removal steps outlined in this guide, you can eliminate this malware from your system. Remember that prevention is always preferable to removal – implementing good security practices will help protect your computer from future infections.
If you encounter difficulties removing Bloom or suspect that your system remains infected despite following these steps, consider seeking professional assistance or using specialized removal tools like Trojan Remover.