Threat Database Trojans Trojan.MSIL.Downloader.Agent.KB

Trojan.MSIL.Downloader.Agent.KB

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 0
First Seen: December 9, 2022
OS(es) Affected: Windows

The detection of Trojan.MSIL.Downloader.Agent.KB on your system indicates a potential security threat that requires immediate attention. This detection name suggests a type of malicious software designed to download additional malware onto infected computers, potentially leading to further system compromise. Understanding the nature of this threat and taking appropriate steps to remove it is crucial for protecting your computer and personal data.

What Is Trojan.MSIL.Downloader.Agent.KB?

Trojan.MSIL.Downloader.Agent.KB is identified as a Trojan-type threat, which typically disguises itself as legitimate software to gain unauthorized access to a computer system. The ".MSIL" part of the name indicates that the malware is written in Microsoft Intermediate Language, which can be executed by the .NET Common Language Runtime (CLR). This allows the malware to run on any system that supports .NET, making it potentially widespread. The "Downloader.Agent.KB" part suggests its capability to download other malicious components or updates from the internet, which can lead to a variety of malicious activities on the infected system.

How Trojan.MSIL.Downloader.Agent.KB Operates

Once installed on a system, Trojan.MSIL.Downloader.Agent.KB can operate in various ways, depending on its intended purpose and the commands it receives from its controllers. Common actions include downloading and installing additional malware, stealing sensitive information such as login credentials or personal data, and using the infected computer as part of a botnet for distributed denial-of-service (DDoS) attacks or spamming. The malware might also attempt to disable security software or interfere with system updates to maintain its presence on the system.

Symptoms of Infection

Symptoms of an infection can vary widely but may include unusual system behavior such as slow performance, frequent crashes, or the appearance of unwanted programs or toolbars in your web browser. You might also notice increased network activity, even when you're not using the internet, or find unfamiliar programs listed in your system's startup menu. Sometimes, the infection might not exhibit obvious symptoms, making it difficult to detect without the use of antivirus software.

How to Remove Trojan.MSIL.Downloader.Agent.KB

  1. Boot your computer in Safe Mode with Networking to limit the malware's ability to interfere with the removal process. This can usually be done by pressing a specific key (such as F8) during startup, though this may vary depending on your computer's manufacturer.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter. Ensure the software is updated to the latest version to increase the chances of detecting and removing the malware.
  3. Uninstall any suspicious programs that you do not recognize or that were installed around the time you suspect the infection occurred. Be cautious and only remove programs you are certain are malicious or unnecessary.
  4. Reset your web browsers (Google Chrome, Mozilla Firefox, Microsoft Edge, etc.) to their default settings. This can help remove any malicious extensions or settings changes made by the malware. The process for doing this varies by browser, so consult the browser's help documentation for specific instructions.
  5. After completing the above steps, reboot your computer and perform another full scan with your anti-malware software to ensure that the threat has been fully removed.

Conclusion

Removing Trojan.MSIL.Downloader.Agent.KB requires careful and systematic steps to ensure the malware is fully eradicated from your system. It's also essential to take preventive measures to avoid future infections, such as keeping your operating system and software up to date, using strong antivirus protection, and being cautious when clicking on links or downloading software from the internet. By understanding the nature of this threat and how to remove it, you can protect your computer and personal data from potential harm.

Analysis Report

General information

Family Name: Trojan.MSIL.Downloader.Agent.KB
Signature status: No Signature

Known Samples

MD5: f4a00ad3427574a68fd83291ae1ce94b
SHA1: 706a04b315b6b9e1289c8b01f35128de7233f04d
SHA256: 86F05146D187B6AB896A030F614A5E32BC56509090F1A36647989156B3648CD4
File Size: 1.26 MB, 1262592 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have relocations information
  • File doesn't have security information
  • File is .NET application
  • File is 64-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • 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

Windows PE Version Information

Name Value
Assembly Version 1.0.0.0
Comments Patch client for Immortal MMO
Company Name Immortal MMO
File Description Immortal Patcher
File Version 1.0.0.0
Internal Name Titanium-MMO.exe
Legal Copyright Copyright © DAVIN
Legal Trademarks IMMMO
Original Filename Titanium-MMO.exe
Product Name Immortal Patcher
Product Version 1.0.0.0

File Traits

  • .NET
  • HighEntropy
  • x64

Block Information

Total Blocks: 83
Potentially Malicious Blocks: 17
Whitelisted Blocks: 45
Unknown Blocks: 21

Visual Map

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

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
Show More
  • ntdll.dll!NtCreateThreadEx
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDefaultLocale
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryFullAttributesFile
  • ntdll.dll!NtQueryInformationFile
  • ntdll.dll!NtQueryInformationJobObject
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryLicenseValue
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQuerySecurityObject
  • ntdll.dll!NtQuerySystemInformation
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN
User Data Access
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Encryption Used
  • BCryptOpenAlgorithmProvider
Anti Debug
  • IsDebuggerPresent
Other Suspicious
  • AdjustTokenPrivileges

Related Posts

Trending

Most Viewed

Loading...