Backdoor.MSIL.Injector.VFA

The detection of Backdoor.MSIL.Injector.VFA on your system indicates a potentially serious security threat. This detection name suggests that your system may be infected with a type of backdoor malware, which can allow unauthorized access to your computer. It is essential to understand the nature of this threat and take immediate action to remove it and protect your system and data.

What Is Backdoor.MSIL.Injector.VFA?

A backdoor is a type of malware that creates a secret entry point into a computer system, allowing attackers to access the system remotely without being detected. The name Backdoor.MSIL.Injector.VFA implies that this malware may be using Microsoft Intermediate Language (MSIL) to inject malicious code into your system. Backdoors can be used for a variety of malicious purposes, including stealing sensitive information, installing additional malware, or using your system as a botnet to conduct further attacks.

How Backdoor.MSIL.Injector.VFA Operates

Backdoor malware typically operates by creating a covert communication channel between your system and a command and control (C2) server controlled by the attacker. This channel can be used to send commands to your system, steal data, or install additional malware. The malware may use various techniques to evade detection, such as code obfuscation, encryption, or exploiting vulnerabilities in software. It is crucial to remove the malware as quickly as possible to prevent further damage.

Symptoms of Infection

Systems infected with backdoor malware may exhibit a range of symptoms, including unusual network activity, slow system performance, or unexpected changes to system settings. You may also notice that your system is behaving erratically or that your personal data is being accessed without your permission. However, some backdoors can operate without displaying any noticeable symptoms, making them difficult to detect without the use of antivirus software.

How to Remove Backdoor.MSIL.Injector.VFA

1. Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools.
2. Use a reputable antivirus tool, such as SpyHunter, to perform a full scan of your system and remove any detected malware.
3. Uninstall any suspicious programs or applications that may be related to the malware.
4. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
5. Reboot your system and perform another full scan with your antivirus tool to ensure that the malware has been completely removed.

Conclusion

Removing Backdoor.MSIL.Injector.VFA from your system requires immediate attention to prevent further damage. By following the steps outlined above, you can help ensure the removal of the malware and protect your system and data from potential threats. It is also essential to maintain good security practices, such as regularly updating your operating system and software, using strong passwords, and being cautious when opening email attachments or clicking on links from unknown sources. Remember, prevention is key to avoiding malware infections in the future.

Analysis Report

General information

Family Name:	Backdoor.MSIL.Injector.VFA
Signature status:	Hash Mismatch

Known Samples

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Known Samples

This section lists other file samples believed to be associated with this family.

MD5: cba73589adfa6a465d9ce46f857b9076 SHA1: 7d999100808ec35f95db3f39d43e572bbb5774aa SHA256: 1A432959748EB8E0C507A53BE9BE73AA79C9969DE80C41644A8317BE888191F2 File Size: 619.17 KB, 619166 bytes

MD5: 42981c07d22523c5d36671034b1589e0 SHA1: 9931b9770263635dc9c277e700075631bce26152 SHA256: 5A67A2EF2E7D4AD93CE51A279D31CFFF265F50ABDBB9FB0562253575F3CDD062 File Size: 339.59 KB, 339592 bytes

Windows Portable Executable Attributes

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Windows Portable Executable Attributes

This section lists file attributes found within family samples. These attributes are extracted from the files’ Windows PE (Portable Executable) specification and various system flags. Portable Executable Attributes give malware researchers insight into a file’s functionality, executable details, platform and runtime environment.

• 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 doesn't have security information
• File is .NET application
• File is 32-bit executable
• File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
• File is either console or GUI application
• File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)

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• File is Native application (NOT .NET application)
• 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

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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

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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	1.0.0.3
File Description	Production Catches Collagis
File Version	1.00 1.0.0.3
Internal Name	Single.exe TJprojMain
Legal Copyright	Copyright © 2023
Original Filename	Single.exe TJprojMain.exe
Product Name	Overchills Project1
Product Version	1.00 1.0.0.3

Digital Signatures

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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
NVIDIA Corporation	DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1	Hash Mismatch
Microsoft Windows Hardware Compatibility Publisher	Microsoft Windows Third Party Component CA 2012	Hash Mismatch

File Traits

• .NET
• HighEntropy
• x86

Block Information

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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:	10
Potentially Malicious Blocks:	1
Whitelisted Blocks:	6
Unknown Blocks:	3

Visual Map

0 ? 0 ? 0 ? x 0 0 0

0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

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Similar Families

This section lists other families that share similarities with this family, based on EnigmaSoft’s analysis. Many malware families are created from the same malware toolkits and use the same packing and encryption techniques but uniquely extend functionality. Similar families may also share source code, attributes, icons, subcomponents, compromised and/or invalid digital signatures, and network characteristics. Researchers leverage these similarities to rapidly and effectively triage file samples and extend malware detection rules.

• MSIL.Krypt.YAGF
• MSIL.Stealer.FS

Files Modified

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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.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

Windows API Usage

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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
Other Suspicious	SetWindowsHookEx
User Data Access	GetComputerNameEx GetUserDefaultLocaleName GetUserObjectInformation
Anti Debug	NtQuerySystemInformation
Process Manipulation Evasion	NtUnmapViewOfSection