How to remove Trojan:MSIL/AgentTesla!MSR

What is Trojan:MSIL/AgentTesla!MSR

Trojan:MSIL/AgentTesla!MSR is a notorious piece of malware designed to infiltrate systems and steal sensitive information. Operating primarily as a spyware Trojan written for the .NET framework, it can capture keystrokes, harvest credentials, and exfiltrate data to its operators. Upon infection, it alters system configurations, manipulates registry entries, and can introduce additional malware components, further compromising the security of the affected system. Its presence often goes undetected as it masquerades as legitimate software, making it difficult for users to spot without specialized security tools. This Trojan is highly adaptable, allowing it to evolve and bypass basic antivirus defenses, posing a persistent threat to both individual and corporate users. Cybercriminals use it to gain unauthorized access to personal information, which can be sold on the dark web or used for further criminal activities. Its removal requires robust anti-malware solutions capable of deep system scanning and thorough cleansing to ensure that the threat is fully eradicated from the infected machine.

How Trojan:MSIL/AgentTesla!MSR infected your system

Trojan:MSIL/AgentTesla!MSR is a notorious malware that infiltrates computers primarily through malicious email attachments, often disguised as legitimate documents to deceive users into opening them. Once the file is executed, the Trojan silently installs itself on the system, frequently masquerading as a legitimate program to avoid detection. This malware can also spread through compromised websites or bundled software downloads, where unsuspecting users download seemingly harmless applications that contain the Trojan. Upon successful infiltration, AgentTesla begins its operation by altering system configurations, weakening defenses, and often downloading additional malicious payloads to further compromise the system. It primarily acts as spyware, logging keystrokes, capturing screenshots, and collecting sensitive information such as login credentials and financial data, which it then transmits to remote servers controlled by cybercriminals. To mitigate the risk of infection, users should employ robust security software, remain vigilant about email sources, and avoid downloading software from untrustworthy sites.

1. Download Trojan:MSIL/AgentTesla!MSR Removal Tool
2. Use Windows Malicious Software Removal Tool to remove Trojan:MSIL/AgentTesla!MSR
3. Use Autoruns to remove Trojan:MSIL/AgentTesla!MSR
4. Files, folders and registry keys of Trojan:MSIL/AgentTesla!MSR
5. Other aliases of Trojan:MSIL/AgentTesla!MSR
6. How to protect from threats, like Trojan:MSIL/AgentTesla!MSR

Remove Trojan:MSIL/AgentTesla!MSR manually

Manual removal of Trojan:MSIL/AgentTesla!MSR 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 Trojan:MSIL/AgentTesla!MSR 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 Trojan:MSIL/AgentTesla!MSR using Autoruns

Trojan:MSIL/AgentTesla!MSR 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 Trojan:MSIL/AgentTesla!MSR

Trojan:MSIL/AgentTesla!MSR files and folders


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Trojan:MSIL/AgentTesla!MSR registry keys


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Aliases of Trojan:MSIL/AgentTesla!MSR

How to protect from threats, like Trojan:MSIL/AgentTesla!MSR, in future

Standard Windows protection or any decent third-party antivirus (Norton, Avast, Kaspersky) should be able to detect and remove Trojan:MSIL/AgentTesla!MSR. However, if you got infected with Trojan:MSIL/AgentTesla!MSR with existing and updated security software, you may consider changing it. To feel safe and protect your PC from Trojan:MSIL/AgentTesla!MSR 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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