Threat Database Trojans Trojan.MSIL.BypassUAC.K

Trojan.MSIL.BypassUAC.K

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 87
First Seen: February 3, 2024
Last Seen: February 9, 2026
OS(es) Affected: Windows

The detection of Trojan.MSIL.BypassUAC.K on your system indicates a potential security threat that requires immediate attention. This report aims to provide you with a comprehensive understanding of the threat, its operation, symptoms, and most importantly, the steps to remove it from your computer.

What Is Trojan.MSIL.BypassUAC.K?

Trojan.MSIL.BypassUAC.K is identified as a Trojan-type threat. Trojans are malicious programs that disguise themselves as legitimate software to gain unauthorized access to a computer system. The name suggests it might be designed to bypass User Account Control (UAC), a security feature in Windows that helps prevent unauthorized changes to your computer. This could imply that the malware attempts to evade detection and operate with elevated privileges, potentially leading to more severe consequences.

How Trojan.MSIL.BypassUAC.K Operates

While specific details about Trojan.MSIL.BypassUAC.K's operation are not available, Trojans generally work by deceiving users into installing them. They can be disguised as useful software, games, or even updates. Once installed, they can create backdoors for remote access, steal sensitive information, disrupt system operation, or install additional malware. The ability to bypass UAC would allow such a Trojan to perform these actions without prompting the user for permission, making it particularly dangerous.

Symptoms of Infection

Symptoms of a Trojan infection can vary widely depending on the malware's goals. Common signs include unexpected changes to system settings, unusual network activity, slow system performance, and the appearance of unwanted programs or toolbars in your browser. Sometimes, the presence of a Trojan might not be immediately apparent, as it may operate stealthily in the background. Regular system scans with anti-virus software can help detect such threats before they cause significant harm.

How to Remove Trojan.MSIL.BypassUAC.K

  1. Enter Safe Mode with Networking: Restart your computer and enter Safe Mode. This will prevent most malware from loading and give you a cleaner environment to work in. Ensure you select the option that includes networking so you can download any necessary tools.
  2. Perform a Full Scan with a Reputable Tool: Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. This can help detect and remove the Trojan and any other malware that might be present.
  3. Uninstall Suspicious Programs: Go through your installed programs and remove anything that you don't recognize or that was installed around the time your system started showing symptoms of infection.
  4. Reset Your Browser: If you use Chrome, Firefox, or Edge, consider resetting your browser to its default settings. This can help remove any malicious extensions or settings changes made by the Trojan.
  5. Reboot and Re-scan: After taking these steps, restart your computer and perform another scan with your anti-malware tool to ensure that the threat has been fully removed.

Conclusion

The detection and removal of Trojan.MSIL.BypassUAC.K require careful and immediate action to prevent potential harm to your system and data. By understanding how Trojans operate and following the removal steps outlined above, you can help protect your computer from this and similar threats. Remember, prevention is key: always be cautious when downloading software, keep your operating system and security software up to date, and regularly scan your system for malware to stay safe online.

Analysis Report

General information

Family Name: Trojan.MSIL.BypassUAC.K
Signature status: No Signature

Known Samples

MD5: 82bfe3551669209ba9ea264d41a17cd8
SHA1: c3b9dd7cbec22d07f47605d4f3d740a8adea4020
SHA256: 5B5F4DD71E4FCD7703670E888BF1D2EAF1A5C7834DDFF50B869044B39A2E07DA
File Size: 11.26 KB, 11264 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have security information
  • File is .NET application
  • File is 32-bit executable
  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI 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)

Windows PE Version Information

Name Value
Assembly Version 1.0.0.0
File Description Cmstp-Bypass
File Version 1.0.0.0
Internal Name Cmstp-Bypass.dll
Legal Copyright Copyright © 2023
Original Filename Cmstp-Bypass.dll
Product Name Cmstp-Bypass
Product Version 1.0.0.0

File Traits

  • .NET
  • dll
  • x86

Block Information

Total Blocks: 23
Potentially Malicious Blocks: 4
Whitelisted Blocks: 19
Unknown Blocks: 0

Visual Map

0 0 0 0 0 0 0 0 0 0 0 x x 0 x x 0 0 0 0 0 0 0
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

  • MSIL.BypassUAC.K
  • MSIL.Downloader.CAYD
  • MSIL.Kryptik.AR

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
Show More
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenProcessTokenEx
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenThreadTokenEx
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN

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