Threat Database Backdoors Backdoor.MSIL.AgentTesla.SC

Backdoor.MSIL.AgentTesla.SC

By CagedTech in Backdoors

Threat Scorecard

Threat Level: 60 % (Medium)
Infected Computers: 1
First Seen: February 6, 2024
Last Seen: January 10, 2026
OS(es) Affected: Windows

The detection of Backdoor.MSIL.AgentTesla.SC on a system indicates a potential security threat that requires immediate attention. This name suggests a backdoor threat, which is a type of malware designed to bypass security mechanisms and allow unauthorized access to a computer system. Understanding the nature of this threat and taking appropriate steps to remove it is crucial for maintaining system security and protecting sensitive information.

What Is Backdoor.MSIL.AgentTesla.SC?

Backdoor.MSIL.AgentTesla.SC is identified as a backdoor threat, implying its primary function is to create a covert communication channel between the compromised system and a command and control server controlled by the attacker. This channel can be used to execute commands, steal data, or install additional malware, making it a significant security risk. The specifics of its operation, including how it infects systems and the exact nature of its payload, can vary, but its core functionality as a backdoor allows it to facilitate a range of malicious activities.

How Backdoor.MSIL.AgentTesla.SC Operates

The operation of Backdoor.MSIL.AgentTesla.SC, like other backdoors, typically involves establishing a connection with its command and control (C2) server. Through this connection, attackers can issue commands to the infected system, which could include data exfiltration, installing additional malware, or using the system as part of a botnet for distributed denial-of-service (DDoS) attacks or spamming. The backdoor's ability to operate stealthily is a key aspect of its design, aiming to evade detection by traditional security software through various evasion techniques.

Symptoms of Infection

Symptoms of a Backdoor.MSIL.AgentTesla.SC infection can be subtle and may not always be immediately apparent. However, possible indicators include unusual network activity, slow system performance, unexpected changes to system settings, or the presence of unfamiliar programs. Since backdoors are designed to be stealthy, a system can be infected for a long time before any symptoms become noticeable, making regular system monitoring and malware scans essential for early detection.

How to Remove Backdoor.MSIL.AgentTesla.SC

  1. Boot your system into Safe Mode with Networking to limit the malware's ability to interfere with the removal process.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all components of the backdoor.
  3. Uninstall any suspicious programs that were installed without your knowledge or consent, as these could be related to the backdoor or other malware.
  4. Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any malicious extensions or settings changes made by the malware.
  5. Reboot your system and perform another full scan with your anti-malware tool to ensure that all traces of the malware have been removed.

Conclusion

The removal of Backdoor.MSIL.AgentTesla.SC requires a thorough and multi-step approach to ensure that all components of the malware are eliminated from the system. By understanding the nature of backdoor threats and taking proactive measures to secure your system, you can significantly reduce the risk of infection and protect your data. Regular system updates, use of reputable security software, and cautious behavior when interacting with emails and downloadable content are key strategies in preventing malware infections. If you suspect your system has been compromised, do not hesitate to take action, as prompt removal of the threat can prevent further damage and protect your privacy and security.

Analysis Report

General information

Family Name: Backdoor.MSIL.AgentTesla.SC
Signature status: No Signature

Known Samples

MD5: c47424564ee79d7db76681e539f83c8d
SHA1: bc12eae7d0493878144000a0abe01cef8933bac3
SHA256: 0AC66FEB98D791F0D8A892C3A6B28FD9A2EDA4B4219B45DADD4496AD86FD3CB8
File Size: 140.80 KB, 140800 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 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)
  • 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 Programa de gestión integral de la Instalación Radiactiva IRA-0761
Company Name Meresis Gestión, S.L.
File Description Programa de Gestión
File Version 1.0.0.0
Internal Name MeresisVBEx.exe
Legal Copyright Copyright © 2022
Legal Trademarks AZ Software
Original Filename MeresisVBEx.exe
Product Name WindowsApplication1
Product Version 1.0.0.0

File Traits

  • .NET
  • .sdata
  • x86

Block Information

Total Blocks: 373
Potentially Malicious Blocks: 8
Whitelisted Blocks: 335
Unknown Blocks: 30

Visual Map

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

Windows API Usage

Category API
User Data Access
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Anti Debug
  • IsDebuggerPresent
  • NtQuerySystemInformation
Keyboard Access
  • GetKeyState

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