Trojan.MSIL.Krypt.YGH
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: | 23,318 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 29 |
| First Seen: | March 10, 2023 |
| Last Seen: | July 12, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.Krypt.YGH on your system indicates a potential security threat that requires immediate attention. This report provides an overview of the threat, its operating methods, symptoms of infection, and step-by-step guidance on how to remove it from your system.
Table of Contents
What Is Trojan.MSIL.Krypt.YGH?
Trojan.MSIL.Krypt.YGH is a type of malware that falls under the broader category of Trojans. Trojans are malicious programs that disguise themselves as legitimate software, aiming to deceive users into installing them. Once installed, they can cause a variety of problems, including data theft, system compromise, and the installation of additional malware. The name "Trojan.MSIL.Krypt.YGH" suggests it may involve encryption or obfuscation techniques to evade detection, but without specific details, it's crucial to approach removal with general best practices for malware eradication.
How Trojan.MSIL.Krypt.YGH Operates
Like other Trojans, Trojan.MSIL.Krypt.YGH likely operates by exploiting user trust or system vulnerabilities to gain unauthorized access to a computer system. It may spread through various means, including email attachments, downloads from untrusted websites, or infected software installations. Once inside, it can perform a range of malicious activities, from stealing sensitive information to using the infected computer as part of a botnet for further malicious activities. Understanding the exact mechanisms of Trojan.MSIL.Krypt.YGH without specific telemetry data requires a broad approach to system cleansing and protection.
Symptoms of Infection
Symptoms of a Trojan infection can vary widely but often include noticeable system slowdowns, frequent crashes, and unusual network activity. Users might also encounter pop-ups, unwanted software installations, or find that their system settings have been altered without their consent. In some cases, the infection may not display overt symptoms, making regular system scans crucial for early detection and prevention of further damage.
- System performance issues, such as slowdowns or crashes
- Unexplained changes to system settings or files
- Appearance of unwanted programs or toolbars
- Increased network activity without obvious cause
How to Remove Trojan.MSIL.Krypt.YGH
- Enter Safe Mode with Networking: This will help prevent the malware from loading and interfering with the removal process. The steps to enter Safe Mode can vary depending on your operating system version.
- Conduct a Full Scan with a Reputable Tool: Utilize an anti-malware tool, such as SpyHunter, that is capable of detecting and removing Trojans. Ensure the tool is updated with the latest definitions before running the scan.
- Uninstall Suspicious Programs: Go through your installed programs and remove any that you don't recognize or that were installed around the time of the infection.
- Reset Your Browser Settings: Trojans often affect web browsers, so resetting Chrome, Firefox, Edge, or any other browser you use to their default settings can help remove malicious add-ons or settings changes.
- Reboot and Re-scan: After completing the above steps, restart your computer and run another full scan with your anti-malware tool to ensure all traces of the malware have been removed.
Conclusion
Removing Trojan.MSIL.Krypt.YGH from your system requires a methodical approach to ensure all components of the malware are eradicated. By following the steps outlined above and maintaining vigilant system monitoring, you can protect your computer from future infections. Regularly updating your operating system, using strong antivirus software, and practicing safe computing habits are key to preventing malware infections. Remember, the detection and removal of malware are ongoing processes that require continuous effort to keep your digital environment safe and secure.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Krypt.YGH |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
666bf6c20abe970dc3e7702b7f4f4467
SHA1:
7d402f7519c8a898a079c9881c4311051bad7156
SHA256:
DDCFD4D754D7FB4D5ADC90A28AE2AF29F5BF012A84E25E9B916C32B1EC9ED2A9
File Size:
2.35 MB, 2346644 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have relocations information
- File doesn't have security information
- File has 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)
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- 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 |
|---|---|
| Comments | This installation was built with Inno Setup. |
| Company Name | * |
| File Description | SoftwareUpdateAService Setup |
| Product Name | SoftwareUpdateAService |
| Product Version | 1.0.0.50 |
File Traits
- .NET
- x86
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\is-0o1lo.tmp\7d402f7519c8a898a079c9881c4311051bad7156_0002346644.tmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\is-7ktvm.tmp\_isetup\_setup64.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data |
Registry Modifications
Registry Modifications
This section lists registry keys and values that were created, modified and/or deleted by samples in this family. Windows Registry activity can provide valuable insight into malware functionality. Additionally, malware often creates registry values to allow itself to automatically start and indefinitely persist after an initial infection has compromised the system.| Key::Value | Data | API Name |
|---|---|---|
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect | RegNtPreCreateKey | |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 슆ꚓᐌǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 궟ꚟᐌǜ | RegNtPreCreateKey |
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| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 쀹ꚲᐌǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 䛺ᐌǜ | RegNtPreCreateKey |
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 |
|---|---|
| Process Shell Execute |
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| User Data Access |
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| Syscall Use |
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56 additional items are not displayed above. |
| Anti Debug |
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| Process Terminate |
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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:\Users\Zswxylma\AppData\Local\Temp\is-0O1LO.tmp\7d402f7519c8a898a079c9881c4311051bad7156_0002346644.tmp" /SL5="$401F2,1539612,780800,c:\users\user\downloads\7d402f7519c8a898a079c9881c4311051bad7156_0002346644"
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open taskkill.exe /f /im SoftwareUpdateAService.exe
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open taskkill.exe /f /im SoftwareUpdateAHost.exe
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open taskkill.exe /f /im SoftwareUpdateAHostCLI.exe
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open taskkill.exe /f /im SoftwareUpdateAClient.exe
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WriteConsole: ERROR: CoInitial
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WriteConsole: ERROR: CoInitial
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WriteConsole: ERROR: CoInitial
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WriteConsole: ERROR: CoInitial
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