Trojan.Kryptik.YFK
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.
| Threat Level: | 80 % (High) |
| Infected Computers: | 17 |
| First Seen: | October 22, 2025 |
| Last Seen: | November 2, 2025 |
| OS(es) Affected: | Windows |
The detection of Trojan.Kryptik.YFK on your system indicates a potential security threat that requires immediate attention. Trojans are a type of malware that can cause significant harm to your computer and compromise your personal data. 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.Kryptik.YFK?
Trojan.Kryptik.YFK is a type of Trojan horse malware that can infect your computer without your knowledge or consent. The name "Trojan" refers to the malware's ability to disguise itself as a legitimate program or file, allowing it to bypass security measures and gain access to your system. Once inside, the malware can cause a range of problems, from stealing sensitive information to disrupting system performance.
How Trojan.Kryptik.YFK Operates
Trojans like Trojan.Kryptik.YFK typically operate by exploiting vulnerabilities in software or human error. They can be spread through various means, including infected email attachments, compromised websites, or infected software downloads. Once the malware has infected your system, it can communicate with its creators, allowing them to remotely control your computer and steal sensitive information. The malware can also install additional malicious software, modify system settings, and disrupt system performance.
Symptoms of Infection
The symptoms of a Trojan.Kryptik.YFK infection can vary, but common signs include slow system performance, unexpected pop-ups or ads, and unfamiliar programs or icons on your desktop. You may also notice that your browser is being redirected to unfamiliar websites or that your computer is crashing frequently. In some cases, the malware may not exhibit any noticeable symptoms, making it difficult to detect without the use of anti-malware software.
- Slow system performance
- Unexpected pop-ups or ads
- Unfamiliar programs or icons on your desktop
- Browser redirection to unfamiliar websites
- Frequent system crashes
How to Remove Trojan.Kryptik.YFK
- Boot your computer in Safe Mode with Networking to prevent the malware 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 any malicious software.
- Uninstall any suspicious programs or software that may be related to the malware infection.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
- Reboot your computer and perform another scan with your anti-malware tool to ensure that the malware has been completely removed.
Conclusion
Removing Trojan.Kryptik.YFK from your system requires careful attention to detail and a thorough understanding of the malware's operating methods. By following the steps outlined in this report, you can help to ensure that your system is free from infection and that your personal data is protected. It is essential to remain vigilant and to regularly scan your system for malware to prevent future infections. Remember to always use reputable anti-malware software and to keep your operating system and software up to date to reduce the risk of infection.
Analysis Report
General information
| Family Name: | Trojan.Kryptik.YFK |
|---|---|
| Signature status: | Hash Mismatch |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
4de9c4f8b94c03b50c97702edf2647b3
SHA1:
0b76f61de41d51680c97732317f78c68021fac77
SHA256:
2AC844F746E835C3D0CC695DDA68EB57CCA72091E8BB9E9417C4E1BE46D6939A
File Size:
3.68 MB, 3681568 bytes
|
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MD5:
860e2e53bcd4ac3a0fc5fe1776b4b965
SHA1:
ff87bca7d0418fd6042e4c8c13f17c6ce2277a3f
SHA256:
D270E151FDCFAB55DDBBA8198881AAAC6BD9F44A3113B8B2CB2ED64581720296
File Size:
4.39 MB, 4386576 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have exports table
- File has TLS information
- File is 32-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
- IMAGE_FILE_DLL is not set inside PE header (Executable)
Show More
- 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 |
|---|---|
| File Version | 1.0.0.0 |
| Product Version | 1.0.0.0 |
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 |
|---|---|---|
| QIHU 360 SOFTWARE CO. LIMITED | Symantec Class 3 SHA256 Code Signing CA | Hash Mismatch |
| Corel Corporation | VeriSign Class 3 Code Signing 2004 CA | Hash Mismatch |
| QIHU 360 SOFTWARE CO. LIMITED | VeriSign Class 3 Code Signing 2010 CA | Hash Mismatch |
File Traits
- HighEntropy
- 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: | 2,189 |
|---|---|
| Potentially Malicious Blocks: | 1 |
| Whitelisted Blocks: | 2,188 |
| 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.- Delf.XB
- Injector.DFG
- Injector.FHBC
- Injector.GSB
- Injector.KFTA
Show More
- Injector.KI
- Injector.XN
- Kryptik.YFH
- Kryptik.YFK
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 |
|---|---|
| c:\users\user\appdata\local\temp\svchost015.exe | Read Data,Read Attributes,Synchronize,Write Data |
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 Manipulation Evasion |
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