Backdoor.MSIL.Remcos.GB
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: | 16,459 |
| Threat Level: | 60 % (Medium) |
| Infected Computers: | 28 |
| First Seen: | November 28, 2023 |
| Last Seen: | June 14, 2026 |
| OS(es) Affected: | Windows |
The detection of Backdoor.MSIL.Remcos.GB on your system indicates a potential security threat that requires immediate attention. This detection name suggests a backdoor-type malware, which is designed to allow unauthorized access to your computer. It is essential to understand the nature of this threat and take prompt action to remove it and prevent further damage.
Table of Contents
What Is Backdoor.MSIL.Remcos.GB?
Backdoor.MSIL.Remcos.GB is a type of malware that falls under the category of backdoors. A backdoor is a malicious program that allows hackers to access a computer system without being detected. It can bypass normal security mechanisms, giving attackers the ability to execute commands, steal data, or install additional malware. The name suggests it is written in MSIL (Microsoft Intermediate Language), which is a platform-agnostic intermediate representation of the .NET Common Intermediate Language (CIL).
How Backdoor.MSIL.Remcos.GB Operates
Backdoor.MSIL.Remcos.GB, like other backdoors, operates by creating a covert communication channel between the infected computer and a command and control (C2) server controlled by the attackers. Through this channel, attackers can send commands to the infected computer, which can lead to a variety of malicious activities, including but not limited to, data theft, keylogging, and the installation of additional malware. The backdoor can remain dormant for extended periods, making it difficult to detect without proper security software.
Symptoms of Infection
Symptoms of a Backdoor.MSIL.Remcos.GB infection can be subtle and may not always be immediately apparent. Common indicators of a backdoor infection include unusual network activity, slow system performance, and unexpected changes to system settings or files. In some cases, the presence of a backdoor may be indicated by unusual login activities or access attempts from unfamiliar locations. However, backdoors are designed to be stealthy, and many infections go unnoticed until significant damage has been done.
How to Remove Backdoor.MSIL.Remcos.GB
- Boot your computer in Safe Mode with Networking. This will limit the malware's ability to interfere with the removal process and allow you to download necessary tools.
- Download and run a full scan with a reputable anti-malware tool, such as SpyHunter. Ensure the tool is updated with the latest definitions to increase the chances of detecting and removing the backdoor.
- Uninstall any suspicious programs that were installed around the time the infection was detected. Be cautious and only remove programs you are certain are malicious or unnecessary.
- Reset your web browsers (Chrome, Firefox, Edge) to their default settings. This can help remove any malicious extensions or settings changes made by the malware.
- Reboot your computer and run another full scan with your anti-malware tool to ensure the backdoor and any associated malware have been completely removed.
Conclusion
The removal of Backdoor.MSIL.Remcos.GB requires careful and immediate action to prevent further compromise of your system and data. By understanding how backdoors operate and following the steps outlined above, you can effectively remove this threat and secure your computer. It's also crucial to maintain good security practices, including keeping your operating system and software up to date, using strong, unique passwords, and being cautious when opening email attachments or downloading software from the internet. Regular scans with reputable security software can help detect and remove threats before they cause significant harm.
Analysis Report
General information
| Family Name: | Backdoor.MSIL.Remcos.GB |
|---|---|
| Signature status: | Hash Mismatch |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
f38e16e3a03d52c326148c81d79f72c2
SHA1:
cd5d380c4591e59588d5df6965e7140d78717ca5
SHA256:
B24DD8212095F85C552A6CCAF8B095CF402E7FFC626D2100A479D65C2FF9F8E0
File Size:
1.81 MB, 1806704 bytes
|
|
MD5:
c1c339cb8d1ad6373331fe1d0f47aff2
SHA1:
c45dbe97ddc836451755974ca73bc3f875c1c853
SHA256:
CDE9891C1FCBBD37603B47411BE6CB045DDACFCF0C301650A4CC0F793C9CEC3C
File Size:
1.91 MB, 1906176 bytes
|
|
MD5:
715ae126b530042466eb79578d16cc42
SHA1:
1d8754b087e05b3d362ad9e6b6475e3b162b4dea
SHA256:
B28BC8CD8C1F51AC05E34AEA8D3CFFAC564E6A84AE4CFFEA012916D55AAF2875
File Size:
6.62 MB, 6620776 bytes
|
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 doesn't have security information
- File is .NET application
- File is 32-bit executable
- File is 64-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
Show More
- 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 |
|
| Comments |
|
| Company Name |
|
| File Description |
|
| File Version |
|
| Internal Name |
|
| Legal Copyright |
|
| Legal Trademarks | VLC media player, VideoLAN and x264 are registered trademarks from VideoLAN |
| Original Filename |
|
| Product Name |
|
| Product Version |
|
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 America, Inc. | DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1 | Hash Mismatch |
| VideoLAN | DigiCert Trusted Root G4 | Hash Mismatch |
| VideoLAN | DigiCert Trusted Root G4 | Hash Mismatch |
File Traits
- .NET
- GenKrypt
- HighEntropy
- x64
- 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: | 1,791 |
|---|---|
| Potentially Malicious Blocks: | 281 |
| Whitelisted Blocks: | 676 |
| Unknown Blocks: | 834 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
Similar Families
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.Downloader.IFA
- MSIL.PureLogStealer.B
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 |
|---|---|
| Syscall Use |
Show More
|
| User Data Access |
|
| Encryption Used |
|
| Other Suspicious |
|
| Process Terminate |
|
| Anti Debug |
|
| Process Manipulation Evasion |
|
