Backdoor.Zegost.CLB
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: | 23,112 |
| Threat Level: | 60 % (Medium) |
| Infected Computers: | 3 |
| First Seen: | December 8, 2022 |
| Last Seen: | June 9, 2026 |
| OS(es) Affected: | Windows |
The detection of Backdoor.Zegost.CLB on your system indicates a potentially serious security threat. This backdoor threat can compromise the security and integrity of your computer, allowing unauthorized access and potentially leading to further malware infections, data theft, or other malicious activities. It is essential to understand the nature of this threat and take immediate action to remove it and prevent future occurrences.
Table of Contents
What Is Backdoor.Zegost.CLB?
Backdoor.Zegost.CLB is a type of malware that creates a secret doorway into your computer system, allowing hackers to remotely access and control your computer without your knowledge or consent. This backdoor can be used to steal sensitive information, install additional malware, or use your computer as a botnet to conduct malicious activities. The name Backdoor.Zegost.CLB itself does not directly indicate a specific malware family, but rather describes the type of threat it poses.
How Backdoor.Zegost.CLB Operates
Backdoor.Zegost.CLB operates by exploiting vulnerabilities in your system or using social engineering tactics to trick you into installing it. Once installed, it can communicate with its command and control servers to receive instructions and transmit stolen data. It may also attempt to hide its presence by disguising itself as a legitimate program or process. The backdoor can be used to download and install additional malware, creating a complex and resilient threat that requires thorough removal efforts.
Symptoms of Infection
Symptoms of a Backdoor.Zegost.CLB infection can be subtle, but they may include unusual system behavior, such as slow performance, frequent crashes, or unfamiliar programs running in the background. You may also notice suspicious network activity, such as unexpected outgoing connections or data transfers. In some cases, the backdoor may attempt to manipulate your system settings or disable security software to maintain its presence.
- Unexplained changes to system settings or configuration
- Appearance of unfamiliar programs or icons
- Increased network activity or unusual data transfers
- System crashes or instability
How to Remove Backdoor.Zegost.CLB
- Boot your computer in Safe Mode with Networking to prevent the backdoor from loading and to allow for a more effective removal process.
- Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system and detect and remove all instances of the backdoor and any related malware.
- Uninstall any suspicious programs or applications that may be related to the backdoor infection.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or settings.
- Reboot your computer and perform another full scan with your anti-malware tool to ensure that the backdoor has been completely removed.
Conclusion
Removing Backdoor.Zegost.CLB requires a thorough and multi-step approach to ensure that all instances of the malware are eliminated and your system is secure. By following the steps outlined above and maintaining good security practices, such as keeping your operating system and software up to date, using strong passwords, and being cautious when clicking on links or downloading attachments, you can help protect your computer from future malware infections and maintain a safe and secure online experience.
Analysis Report
General information
| Family Name: | Backdoor.Zegost.CLB |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
206b3cd4ee66423d0d6c313629f561b8
SHA1:
b0414769e528519d63f33151da695d1c2aa392d9
SHA256:
BEF97D38BE40733E1D530A3E5D0397A4D82C8307014EEFC71207031DEF73AF02
File Size:
52.22 KB, 52224 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 security information
- File has exports table
- File is 32-bit executable
- File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
- File is either console or GUI application
- 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)
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 |
|---|---|
| Comments | FreeEIM |
| Company Name | FEIM Studios |
| File Description | A Free Enterprise Instant Messenger |
| File Version | 3, 5, 0, 1 |
| Internal Name | freeeim |
| Legal Copyright | Copyright (C) 2010 FEIM Studios |
| Original Filename | freeeim.exe |
| Product Name | FreeEIM |
| Product Version | 3, 5, 0, 1 |
| Special Build | Simple Chinese |
File Traits
- dll
- 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: | 48 |
|---|---|
| Potentially Malicious Blocks: | 33 |
| Whitelisted Blocks: | 15 |
| Unknown Blocks: | 0 |
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.- Farfli.FH
- Zegost.CLB
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 |
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| Process Manipulation Evasion |
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| Process Shell Execute |
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| Anti Debug |
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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:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\b0414769e528519d63f33151da695d1c2aa392d9_0000052224.,LiQMAxHB
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