Backdoor.MSIL.Agent.XFC
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.
| Threat Level: | 60 % (Medium) |
| Infected Computers: | 3 |
| First Seen: | August 8, 2025 |
| Last Seen: | October 8, 2025 |
| OS(es) Affected: | Windows |
The detection of Backdoor.MSIL.Agent.XFC on your system indicates a potentially serious security threat. This backdoor threat is designed to allow unauthorized access to your computer, which can lead to a range of malicious activities, including data theft, malware distribution, and system compromise. It is essential to understand the nature of this threat and take immediate action to remove it and protect your system.
Table of Contents
What Is Backdoor.MSIL.Agent.XFC?
Backdoor.MSIL.Agent.XFC is a type of malware that creates a secret pathway for hackers to access and control your computer remotely. The name suggests it is written in MSIL (Microsoft Intermediate Language), which is a platform-agnostic, object-oriented intermediate representation of the .NET framework. This backdoor can be used for various malicious purposes, including stealing sensitive information, installing additional malware, or using your computer as part of a botnet for illegal activities.
How Backdoor.MSIL.Agent.XFC Operates
Backdoor.MSIL.Agent.XFC operates by establishing a covert communication channel between your computer and a command and control (C2) server controlled by the attackers. This channel allows the attackers to send commands to your computer and receive stolen data or other information. The backdoor can be installed on your system through various means, such as exploiting vulnerabilities in software, phishing attacks, or by being bundled with other malware. Once installed, it can hide itself and its activities from the user, making it difficult to detect without proper security software.
Symptoms of Infection
Symptoms of a Backdoor.MSIL.Agent.XFC infection can be subtle and may not always be immediately apparent. However, you might notice unusual system behavior, such as unexpected network activity, slow system performance, or unfamiliar programs running in the background. In some cases, you might also notice changes to your system settings or the presence of unfamiliar files and folders. It's crucial to monitor your system for any suspicious activity and run regular security scans to detect and remove threats like Backdoor.MSIL.Agent.XFC.
How to Remove Backdoor.MSIL.Agent.XFC
- 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.
- Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. This can help detect and remove the backdoor and any other associated malware.
- Uninstall any suspicious programs or applications that you do not recognize or that were installed around the time the malware was detected.
- Reset your web browsers, such as Chrome, Firefox, or Edge, to their default settings to remove any malicious extensions or settings changes made by the malware.
- Reboot your computer and perform another full scan with your anti-malware tool to ensure that the threat has been completely removed.
Conclusion
Removing Backdoor.MSIL.Agent.XFC requires careful and immediate action to prevent further damage to your system and data. By following the steps outlined above and maintaining good security practices, such as keeping your software up to date, using strong antivirus software, and being cautious with emails and downloads, you can protect your computer from backdoor threats and other types of malware. Remember, vigilance and proactive security measures are key to safeguarding your digital assets in today's evolving cybersecurity landscape.
Analysis Report
General information
| Family Name: | Backdoor.MSIL.Agent.XFC |
|---|---|
| Signature status: | Hash Mismatch |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
d8ece2f5e1d6ec0438bcb4a675a41781
SHA1:
e97301ab743b5f7f510dcc1a9f35b88bb16197a7
SHA256:
9B18FAC62EA6D14F3C415E4B474D69BFBA9B78668010EC921457F8EE597DAF7E
File Size:
2.58 MB, 2581904 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 is .NET application
- File is 32-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
- 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.
Windows PE Version Information
Windows PE Version Information
This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.| Name | Value |
|---|---|
| Assembly Version | 7.0.8.6879 |
| Comments | VirtualBox Web Service |
| Company Name | Oracle and/or its affiliates |
| File Description | VirtualBox Web Service |
| File Version | 7.0.8.6879 |
| Internal Name | Eqanqpez.exe |
| Legal Copyright | Copyright (C) 2009-2023 Oracle Corporation |
| Original Filename | Eqanqpez.exe |
| Product Name | Oracle VM VirtualBox |
| Product Version | 7.0.8.6879 |
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 |
|---|---|---|
| Oracle Corporation | DigiCert Assured ID Root CA | Hash Mismatch |
| Oracle Corporation | VeriSign Class 3 Public Primary Certification Authority - G5 | Hash Mismatch |
File Traits
- .NET
- big overlay
- HighEntropy
- x86
Block Information
Block Information
During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.| Total Blocks: | 1,613 |
|---|---|
| Potentially Malicious Blocks: | 181 |
| Whitelisted Blocks: | 368 |
| Unknown Blocks: | 1,064 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
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\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.0.regtrans-ms | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.1.regtrans-ms | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.2.regtrans-ms | Generic Read,Write Data,Write Attributes,Write extended,Append data |
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\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 沖휽ǜ | 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 |
|---|---|
| User Data Access |
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| Encryption Used |
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| Anti Debug |
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| Other Suspicious |
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| Process Terminate |
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| Process Shell Execute |
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| Syscall Use |
Show More
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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.
"powershell.exe" -NoProfile -ExecutionPolicy Bypass -Enc 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