Trojan.Agent.XXA
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: | 25,218 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 16 |
| First Seen: | January 28, 2025 |
| Last Seen: | June 7, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.Agent.XXA indicates that your system has been compromised by a potentially malicious program. This type of threat is categorized as a Trojan, which is a broad term for malware that disguises itself as legitimate software. The presence of Trojan.Agent.XXA on your system poses a risk to your personal data and system security, and it is essential to take immediate action to remove it.
Table of Contents
What Is Trojan.Agent.XXA?
Trojan.Agent.XXA is a type of malware that can infect your system through various means, such as exploited vulnerabilities, drive-by downloads, or social engineering tactics. Once installed, it can perform a range of malicious activities, including data theft, system compromise, and unauthorized access to your computer. The "Agent" suffix in the detection name suggests that this malware may be designed to operate stealthily, potentially allowing it to evade detection by traditional security software.
How Trojan.Agent.XXA Operates
Malware like Trojan.Agent.XXA typically operates by exploiting weaknesses in your system's security or by tricking users into installing it. Once installed, it can create backdoors, allowing remote access to your system, or it can be used to distribute other types of malware. The exact operation of Trojan.Agent.XXA can vary, but its primary goal is to compromise your system's security and potentially steal sensitive information.
Symptoms of Infection
Systems infected with Trojan.Agent.XXA may exhibit a range of symptoms, including slow system performance, unexpected crashes, or unusual network activity. You might also notice that your browser settings have been altered, or that unfamiliar programs are installed on your system. In some cases, the infection may not display any noticeable symptoms, making it difficult to detect without the use of security software.
- Unexplained changes to system settings or browser configurations
- Appearance of unfamiliar or suspicious programs
- Slow system performance or frequent crashes
- Unusual network activity or data usage
How to Remove Trojan.Agent.XXA
- Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow for internet access to download removal tools.
- Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all components of the Trojan.Agent.XXA malware.
- Uninstall any suspicious programs that were installed around the time of the infection. Be cautious and only remove programs that you are certain are malicious or unnecessary.
- Reset your web browsers (Chrome, Firefox, Edge) to their default settings to remove any malicious extensions or settings that the malware may have altered.
- Reboot your system and perform another full scan with your anti-malware tool to ensure that all remnants of the malware have been removed.
Conclusion
The removal of Trojan.Agent.XXA requires careful and immediate action to prevent further damage to your system and to protect your personal data. By following the steps outlined above and maintaining vigilant system security practices, you can help ensure the integrity of your computer and safeguard against future malware infections. Remember, prevention is key, and keeping your operating system, software, and security tools up to date, along with being cautious when downloading and installing programs, can significantly reduce the risk of malware infections.
Analysis Report
General information
| Family Name: | Trojan.Agent.XXA |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
47dafbda266caa1ea184f95f8af2bb21
SHA1:
5a2e001f95f919659aa9fb56d2ac3d98b9aab950
SHA256:
0F0F359FF109B469C8387F7CFD6D0C9CE722B132B007009375AC536DBD0078BE
File Size:
8.26 MB, 8260720 bytes
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MD5:
20ed8f784b136173038b43b9febbcb2d
SHA1:
b5cca2fe6ecbad875d242aaca1ead5565a1586d6
SHA256:
2D5B0382427D378C595FB85077820CF7D0EE191F91888953DC230641BCCA94D1
File Size:
27.92 KB, 27919 bytes
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MD5:
03230e098ef3a6cdee8ecfacf65b064b
SHA1:
b49f1b9e724e2612e463a161ddee6256115a30b1
SHA256:
5B666109A1DAA714A5ED314EA5C5F6E9BD922D9D23D8BE400E5DF78568936B54
File Size:
110.08 KB, 110080 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 relocations information
- File doesn't have resources
- File doesn't have security information
- File has TLS information
- File is 32-bit executable
- File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
- File is either console or GUI application
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- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- 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
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 |
|---|---|
| Company Name | NoahSystem |
| File Description | Knight Online Client |
| File Version | 4, 23, 13, 3000 |
| Internal Name | Warfare |
| Legal Copyright | Copyright ? 2001. NoahSystem.co.ltd |
| Original Filename | KnightOnline.exe |
| Product Name | Knight Online Client |
| Product Version | 4, 23, 13, 3000 |
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 |
|---|---|---|
| Game Cafe Services Inc | SSL.com Code Signing Intermediate CA RSA R1 | Self Signed |
File Traits
- 00 section
- 2+ executable sections
- HighEntropy
- No Version Info
- WriteProcessMemory
- 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: | 520 |
|---|---|
| Potentially Malicious Blocks: | 6 |
| Whitelisted Blocks: | 514 |
| 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.- Agent.XXA
- Downloader.OFE
- IRCBot.OB
- IRCBot.QC
- Keylogger.XA
Show More
- Votos.A
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 |
|---|---|
| Network Winsock2 |
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| Process Shell Execute |
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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.
th155.exe th155.exe
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