How to remove MassJacker

What is MassJacker

MassJacker is a sophisticated cryptojacking malware designed to hijack cryptocurrency transactions by intercepting and replacing copied wallet addresses with attacker-controlled ones. This stealthy tactic, known as clipboard hijacking, dupes victims into unknowingly sending funds to the attacker instead of their intended recipient, often resulting in significant monetary losses. Distributed through malicious websites offering pirated software, MassJacker employs advanced evasion techniques, such as code obfuscation and memory injection, to avoid detection by security tools. It shares similarities with MassLogger, suggesting that both may be part of a malware-as-a-service operation utilized by various threat actors. Once in the system, this malware operates silently, showing no clear symptoms, making it challenging for users to detect its presence without specialized software. Its ability to manipulate runtime functions and encrypt payloads further complicates the removal process. As cryptocurrency transactions are irreversible, victims have little recourse if funds are sent to a cybercriminal’s wallet, emphasizing the importance of proactive security measures.

How MassJacker infected your system

MassJacker, a sophisticated cryptojacking malware, often infiltrates computers through deceptive online practices, particularly via websites offering pirated software. These sites lure users with the promise of free software but instead initiate a download of malicious files. The infection process typically begins with a command script and a PowerShell script that stealthily download multiple files, including the MassJacker payload. The malware employs techniques such as using a tool called PackerE, which downloads an encrypted file known as PackerD1 to evade detection by security tools. PackerD1 subsequently loads PackerD2, which contains the MassJacker payload, injecting it into a legitimate system process like InstalUtil.exe, allowing it to operate undetected. This intricate infection chain highlights the importance of avoiding untrustworthy download sources and maintaining robust cybersecurity measures.

1. Download MassJacker Removal Tool
2. Use Windows Malicious Software Removal Tool to remove MassJacker
3. Use Autoruns to remove MassJacker
4. Files, folders and registry keys of MassJacker
5. Other aliases of MassJacker
6. How to protect from threats, like MassJacker

Remove MassJacker manually

Manual removal of MassJacker by inexperienced users may become a difficult task because it does not create entries in Add/Remove Programs under Control Panel, does not install browser extensions, and uses random file names. However, there are pre-installed instruments in the Windows system, that allow you to detect and remove malware without using third-party applications. One of them is Windows Malicious Software Removal Tool. It comes with Windows Update in Windows 11, 10, 8. 8.1. For older operating system you can download it here: 64-bit version | 32-bit version.

Remove MassJacker using Windows Malicious Software Removal Tool

1. Type mrt in the search box near Start Menu.
2. Run mrt clicking on found item.
3. Click Next button.
4. Choose one of the scan modes Quick scan, Full scan, Customize scan (Full scan recommended).
5. Click Next button.
6. Click on View detailed results of the scan link to view the scan details.
7. Click Finish button.

Remove MassJacker using Autoruns

MassJacker often sets up to run at Windows startup as an Autorun entry or Scheduled task.

1. Download Autoruns using this link.
2. Extract the archive and run Autoruns.exe file.
3. In Options menu make sure there are checkboxes near Hide Empty Locations, Hide Microsoft Entries, and Hide Windows Entries.
4. Search for suspicious entries with weird names or running from locations like: C:\{username}\AppData\Roaming.
5. Right-click on suspicious entry and choose Delete. This will prevent the threat to run at startup.
6. Switch to Scheduled Tasks tab and do the same.
7. To remove files themselves, click on suspicious entries and choose Jump to Entry…. Remove files or registry keys found.

Remove files, folder and registry keys of MassJacker

MassJacker files and folders


{randomname}.exe


MassJacker registry keys


no information


Aliases of MassJacker

How to protect from threats, like MassJacker, in future

Standard Windows protection or any decent third-party antivirus (Norton, Avast, Kaspersky) should be able to detect and remove MassJacker. However, if you got infected with MassJacker with existing and updated security software, you may consider changing it. To feel safe and protect your PC from MassJacker on all levels (browser, e-mail attachments, Word or Excel scripts, file system) we recommend a leading provider of internet security solutions – BitDefender. Its solutions both for home and business users proved to be one of the most advanced and effective. Choose and get your BitDefender protection via the button below:

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