Trojan.Agent.KOSJ
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: | 20,792 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 2 |
| First Seen: | June 13, 2026 |
| Last Seen: | June 16, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.Agent.KOSJ on your system indicates a potential security threat that requires immediate attention. Trojan-type threats are known for their ability to disguise themselves as legitimate programs, making them difficult to detect and remove. In this report, we will provide an overview of the threat, its operating methods, symptoms of infection, and steps to remove it from your system.
Table of Contents
What Is Trojan.Agent.KOSJ?
Trojan.Agent.KOSJ is a type of Trojan threat that can compromise the security and integrity of your system. The name "Trojan" refers to the threat's ability to masquerade as a legitimate program, while "Agent.KOSJ" is a unique identifier assigned to this particular threat. It is essential to understand that Trojan-type threats can be used for various malicious purposes, including data theft, system compromise, and unauthorized access.
How Trojan.Agent.KOSJ Operates
Trojan.Agent.KOSJ, like other Trojan-type threats, operates by exploiting vulnerabilities in your system or deceiving users into installing it. Once installed, it can communicate with its command and control servers to receive instructions and transmit stolen data. The threat can also install additional malware, create backdoors, and modify system settings to maintain its presence on the system.
Symptoms of Infection
Systems infected with Trojan.Agent.KOSJ may exhibit various symptoms, including slow system performance, unexpected crashes, and unfamiliar programs or icons. You may also notice unusual network activity, such as increased data usage or unfamiliar connections. Additionally, your system may become vulnerable to other types of malware and exploits, making it essential to remove the threat as soon as possible.
- Unexplained system crashes or freezes
- Slow system performance or responsiveness
- Unfamiliar programs or icons on your system
- Unusual network activity or data usage
How to Remove Trojan.Agent.KOSJ
- Boot your system in Safe Mode with Networking to prevent the threat from loading and to allow for internet access.
- Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all instances of the threat.
- Uninstall any suspicious programs or applications that may be related to the threat.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
- Reboot your system and perform another full scan to ensure that the threat has been completely removed.
Conclusion
Removing Trojan.Agent.KOSJ from your system requires careful attention to detail and a comprehensive approach. By following the steps outlined in this report, you can help ensure the complete removal of the threat and prevent future infections. It is essential to remain vigilant and proactive in maintaining your system's security, including keeping your operating system and software up to date, using strong antivirus protection, and avoiding suspicious downloads and links.
Analysis Report
General information
| Family Name: | Trojan.Agent.KOSJ |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
5d855bee37a3a51f6127740e250d091b
SHA1:
76dbd813a48bf3f7425a2e3800fec097bbd144c4
SHA256:
1A75ABDAE6CDAE917988EBEFD768BAFB726C7982DFE4B22540275AB945422A69
File Size:
478.72 KB, 478720 bytes
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MD5:
502889bd5fa661eb62df82fc71f7cf2b
SHA1:
cd323ba33e000f670cf3bb62bd10972c4ade78f4
SHA256:
DDDB8D70EBD37F8036AD51AFF3CF29CB76388F988C38B18AB7DF6E931348748A
File Size:
478.21 KB, 478208 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 security information
- File has TLS information
- File is 64-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
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- IMAGE_FILE_DLL is not set inside PE header (Executable)
- 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 |
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| Company Name |
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| File Description |
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| File Version |
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| Internal Name |
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| Legal Copyright |
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| Original Filename |
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| Product Name |
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| Product Version |
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File Traits
- HighEntropy
- x64
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: | 132 |
|---|---|
| Potentially Malicious Blocks: | 20 |
| Whitelisted Blocks: | 68 |
| Unknown Blocks: | 44 |
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.- Agent.KOSD
- Agent.KOSJ
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 |
|---|---|
| \device\namedpipe\gmdasllogger | Generic Write,Read Attributes |
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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| Network Wininet |
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| Network Winhttp |
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| Encryption Used |
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