Threat Database Trojans Trojan.MSIL.Spy.Agent.JA

Trojan.MSIL.Spy.Agent.JA

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 23
First Seen: March 3, 2023
Last Seen: September 12, 2025
OS(es) Affected: Windows

The detection of Trojan.MSIL.Spy.Agent.JA on your system indicates a potential security threat. This detection name suggests that the malware is a type of Trojan, which is a broad category of malicious software that can perform a variety of harmful actions. The ".MSIL" part of the name indicates that the malware is written in Microsoft Intermediate Language, which is a programming language used by the .NET Framework. The ".Spy.Agent.JA" part of the name suggests that the malware may be related to spyware, which is a type of malware that is designed to gather sensitive information about the user or their system.

What Is Trojan.MSIL.Spy.Agent.JA?

Trojan.MSIL.Spy.Agent.JA is a type of malicious software that can infect your system and perform a variety of harmful actions. The exact nature of this malware is not well understood, but it is believed to be a type of spyware that is designed to gather sensitive information about the user or their system. This information can include personal data, such as login credentials, credit card numbers, and other sensitive information. The malware may also be able to monitor the user's activity, such as their browsing history and keystrokes.

How Trojan.MSIL.Spy.Agent.JA Operates

Trojan.MSIL.Spy.Agent.JA is likely to operate by exploiting vulnerabilities in the system or by using social engineering tactics to trick the user into installing the malware. Once installed, the malware can begin to gather sensitive information about the user or their system. This information can be transmitted back to the malware's creators, who can use it for a variety of malicious purposes. The malware may also be able to install additional malware or software on the system, which can further compromise the user's security.

Symptoms of Infection

The symptoms of a Trojan.MSIL.Spy.Agent.JA infection can vary, but they may include slow system performance, unexpected pop-ups or ads, and unfamiliar programs or icons on the system. The user may also notice that their personal data is being stolen or that their system is being used for malicious activities. In some cases, the malware may not exhibit any noticeable symptoms, which can make it difficult to detect.

How to Remove Trojan.MSIL.Spy.Agent.JA

  1. Boot your system into Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools.
  2. Download and install a reputable anti-malware tool, such as SpyHunter, and perform a full scan of your system to detect and remove the malware.
  3. Uninstall any suspicious programs or software that may be related to the malware.
  4. Reset your web browsers, such as Chrome, Firefox, or Edge, to their default settings to remove any malicious extensions or add-ons.
  5. Reboot your system and perform another scan with your anti-malware tool to ensure that the malware has been completely removed.

Conclusion

The removal of Trojan.MSIL.Spy.Agent.JA requires careful attention to detail and a thorough understanding of the malware's behavior. By following the steps outlined above, you can help to ensure that the malware is completely removed from your system and that your personal data is protected. It is also important to take steps to prevent future infections, such as keeping your operating system and software up to date, using strong antivirus software, and being cautious when opening email attachments or downloading software from the internet.

Analysis Report

General information

Family Name: Trojan.MSIL.Spy.Agent.JA
Signature status: No Signature

Known Samples

MD5: 9308b5dc703060b08f2a7a25af923095
SHA1: 1322d51ace1f111a18b12a149af9adbe5e3b6ba3
SHA256: 6A1F394DB151CF3B1366C7894F3E18E2E7D23DC8E239AB1BFD9B518479BD5C5F
File Size: 83.46 KB, 83456 bytes

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 security information
  • File is .NET application
  • File is 32-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)
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  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

Windows PE Version Information

Name Value
Assembly Version 1.0.0.0
File Version 1.0.0.0
Internal Name Stub.exe
Legal Copyright Copyright © 2021
Original Filename Stub.exe
Product Version 1.0.0.0

File Traits

  • .NET
  • CryptUnprotectData
  • NewLateBinding
  • No CryptProtectData
  • x86

Block Information

Total Blocks: 149
Potentially Malicious Blocks: 42
Whitelisted Blocks: 27
Unknown Blocks: 80

Visual Map

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

Windows API Usage

Category API
User Data Access
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Anti Debug
  • IsDebuggerPresent
  • NtQuerySystemInformation
Network Winsock2
  • WSASocket
  • WSAStartup
Network Winsock
  • closesocket
  • setsockopt

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