Trojan.MSIL.FakeMS.F
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Popularity Rank: | 18,372 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 42 |
| First Seen: | November 9, 2021 |
| Last Seen: | July 19, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.FakeMS.F on your system indicates a potential security threat that requires immediate attention. This Trojan-type threat can compromise the integrity of your computer and put your personal data at risk. It is essential to understand the nature of this threat and take prompt action to remove it and prevent future infections.
Table of Contents
What Is Trojan.MSIL.FakeMS.F?
Trojan.MSIL.FakeMS.F is a type of malware that disguises itself as a legitimate program or file to gain unauthorized access to a computer system. The name suggests that it may be attempting to mimic the appearance or behavior of a Microsoft (MS) product, potentially to evade detection or gain the trust of the user. Trojans are known for their ability to create backdoors, allowing attackers to remotely access and control the infected system, steal sensitive information, or use the system for malicious activities such as spreading spam or participating in botnet attacks.
How Trojan.MSIL.FakeMS.F Operates
Once installed, Trojan.MSIL.FakeMS.F can operate in various ways, depending on its intended purpose. It may start by creating a backdoor that allows remote access to the system, enabling the attacker to execute commands, steal data, or install additional malware. It could also modify system settings, disable security software, or interfere with the normal operation of the computer to maintain its presence and avoid detection. The exact operation can vary, but the primary goal is often to exploit the system for financial gain or to disrupt its operation.
Symptoms of Infection
Symptoms of a Trojan.MSIL.FakeMS.F infection can be subtle and may not always be immediately apparent. However, common indicators include unusual system behavior such as unexpected pop-ups, slow performance, frequent crashes, or unfamiliar programs running in the background. You might also notice changes in your browser settings, unexpected toolbars, or a significant increase in spam emails. In some cases, the system may become unstable, or you might find that your personal files have been encrypted by ransomware that was downloaded through the Trojan.
How to Remove Trojan.MSIL.FakeMS.F
- Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow for a clean environment to perform removal steps.
- Download and run a full scan with a reputable anti-malware tool, such as SpyHunter, to detect and remove all traces of the Trojan and any other malware that may be present.
- Uninstall any suspicious programs that you do not recognize or that were installed around the time the infection was detected. Be cautious and only remove programs you are sure are not needed.
- Reset your web browsers (Chrome, Firefox, Edge) to their default settings to remove any malicious extensions or settings changes made by the Trojan.
- Reboot your computer and run another full scan with your anti-malware tool to ensure that all components of the Trojan have been removed and that your system is clean.
Conclusion
Removing Trojan.MSIL.FakeMS.F requires careful and systematic steps to ensure that all components of the malware are eliminated from your system. It is crucial to act quickly to prevent further damage and to protect your personal data. After removal, consider taking additional security measures such as updating your operating system and software, using strong antivirus protection, and being cautious when opening emails or downloading files from the internet. By taking these steps, you can help protect your computer from future malware infections and maintain a secure online environment.
Analysis Report
General information
| Family Name: | Trojan.MSIL.FakeMS.F |
|---|---|
| Signature status: | Root Not Trusted |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
c4c3924ea7227465b46e762ffb56646f
SHA1:
4ad8b3c3c9c86b8d9fa3c92338c55c830d94e5f1
SHA256:
449D5454F2FEA66390DDC8101E96DC561D587F47ECB7F144E41B2D9EBC56A852
File Size:
7.29 MB, 7285448 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have exports table
- File doesn't have relocations information
- File is 32-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is Native application (NOT .NET application)
- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
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- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Icons
File Icons
This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.
Digital Signatures
Digital Signatures
This section lists digital signatures that are attached to samples within this family. When analyzing and verifying digital signatures, it is important to confirm that the signature’s root authority is a well-known and trustworthy entity and that the status of the signature is good. Malware is often signed with non-trustworthy “Self Signed” digital signatures (which can be easily created by a malware author with no verification). Malware may also be signed by legitimate signatures that have an invalid status, and by signatures from questionable root authorities with fake or misleading “Signer” names.| Signer | Root | Status |
|---|---|---|
| SecureW2 | DigiCert Assured ID Root CA | Root Not Trusted |
| SecureW2 | DigiCert Assured ID Root CA | Root Not Trusted |
File Traits
- .NET
- Installer Version
- x86
Files Modified
Files Modified
This section lists files that were created, modified, moved and/or deleted by samples in this family. File system activity can provide valuable insight into how malware functions on the operating system.| File | Attributes |
|---|---|
| c:\users\user\appdata\local\temp\logo.png | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\logo.png | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\nsf4bbb.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete |
| c:\users\user\appdata\local\temp\nsv4bcc.tmp | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\nsv4bcc.tmp\system.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsv4bcc.tmp\system.dll | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\securew2.cloudconfig | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\securew2.cloudconfig | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\securew2_enterprise_client.exe | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\securew2_enterprise_client.exe | Synchronize,Write Attributes |
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| c:\users\user\appdata\local\temp\securew2_joinnow.exe | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\securew2_joinnow.exe | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\vpn-setup-v1.6.exe | Generic Write,Read Attributes |
Registry Modifications
Registry Modifications
This section lists registry keys and values that were created, modified and/or deleted by samples in this family. Windows Registry activity can provide valuable insight into malware functionality. Additionally, malware often creates registry values to allow itself to automatically start and indefinitely persist after an initial infection has compromised the system.| Key::Value | Data | API Name |
|---|---|---|
| HKLM\software\microsoft\tracing\securew2joinnow::enablefiletracing | RegNtPreCreateKey | |
| HKLM\software\microsoft\tracing\securew2joinnow::filetracingmask | RegNtPreCreateKey | |
| HKLM\software\microsoft\tracing\securew2joinnow::enablefiletracing | RegNtPreCreateKey | |
| HKLM\software\microsoft\tracing\securew2joinnow::enableautofiletracing | RegNtPreCreateKey | |
| HKLM\software\microsoft\tracing\securew2joinnow::enableconsoletracing | RegNtPreCreateKey | |
| HKLM\software\microsoft\tracing\securew2joinnow::filetracingmask | RegNtPreCreateKey | |
| HKLM\software\microsoft\tracing\securew2joinnow::consoletracingmask | RegNtPreCreateKey | |
| HKLM\software\microsoft\tracing\securew2joinnow::maxfilesize | RegNtPreCreateKey | |
| HKLM\software\microsoft\tracing\securew2joinnow::filedirectory | %windir%\tracing | RegNtPreCreateKey |
| HKCU\software\microsoft\windows\currentversion\internet settings\5.0\cache\content::cacheprefix | RegNtPreCreateKey |
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| HKCU\software\microsoft\windows\currentversion\internet settings\5.0\cache\cookies::cacheprefix | Cookie: | RegNtPreCreateKey |
| HKCU\software\microsoft\windows\currentversion\internet settings\5.0\cache\history::cacheprefix | Visited: | RegNtPreCreateKey |
| HKLM\system\controlset001\control\session manager::pendingfilerenameoperations | \??\C:\Users\Mkbfetng\AppData\Local\Temp\nsv4BCC.tmp\ | RegNtPreCreateKey |
Windows API Usage
Windows API Usage
This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.| Category | API |
|---|---|
| Process Manipulation Evasion |
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| Process Shell Execute |
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| Syscall Use |
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| Network Wininet |
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| Network Urlomon |
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| Encryption Used |
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Shell Command Execution
Shell Command Execution
This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.
C:\Users\Mkbfetng\AppData\Local\Temp\SecureW2_JoinNow.exe -install
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