Threat Database Backdoors Backdoor.Firsot.A

Backdoor.Firsot.A

By CagedTech in Backdoors
Published:
Last updated:

Threat Scorecard

Threat Level: 60 % (Medium)
Infected Computers: 9
First Seen: October 10, 2011
OS(es) Affected: Windows

The detection of Backdoor.Firsot.A on your system indicates a potential security threat that requires immediate attention. This backdoor threat can compromise your system's security and allow unauthorized access to your data. It is essential to understand the nature of this threat and take prompt action to remove it and prevent future infections.

What Is Backdoor.Firsot.A?

Backdoor.Firsot.A is a type of malware that allows unauthorized access to a compromised system. It can be used by attackers to steal sensitive information, install additional malware, or take control of the system. Backdoors like Backdoor.Firsot.A can be particularly dangerous because they can remain hidden on a system for an extended period, allowing attackers to carry out their malicious activities without being detected.

How Backdoor.Firsot.A Operates

Backdoor.Firsot.A operates by creating a secret channel of communication between the compromised system and the attacker's command and control server. This channel allows the attacker to send commands to the compromised system, which can include instructions to steal data, install additional malware, or take control of the system. The backdoor can also be used to spread malware to other systems, making it a significant threat to network security.

Backdoors like Backdoor.Firsot.A can be installed on a system through various means, including exploited vulnerabilities, phishing attacks, or drive-by downloads. Once installed, the backdoor can be difficult to detect, as it can be designed to evade detection by traditional security software.

Symptoms of Infection

The symptoms of a Backdoor.Firsot.A infection can be subtle, making it challenging to detect the malware without the help of security software. Some common symptoms of a backdoor infection include unusual network activity, slow system performance, and unexplained changes to system settings. Additionally, backdoors can be used to install additional malware, which can cause a range of symptoms, including pop-up ads, redirected web searches, and crashed applications.

  • Unusual network activity, such as unexpected outgoing connections or data transfers
  • Slow system performance, including slow startup times and sluggish application response
  • Unexplained changes to system settings, including changes to browser settings or system configuration

How to Remove Backdoor.Firsot.A

  1. Boot your system in Safe Mode with Networking to prevent the backdoor from loading and to allow for easier removal
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove the backdoor and any associated malware
  3. Uninstall any suspicious programs or applications that may be related to the backdoor infection
  4. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or settings
  5. Reboot your system and perform a follow-up scan to ensure that the backdoor and any associated malware have been successfully removed

Conclusion

The detection of Backdoor.Firsot.A on your system is a serious security issue that requires prompt attention. By understanding the nature of this threat and taking the necessary steps to remove it, you can help protect your system and data from further compromise. It is essential to remain vigilant and to take proactive steps to prevent future infections, including keeping your operating system and security software up to date, avoiding suspicious downloads and email attachments, and using strong passwords and authentication measures.

Aliases

15 security vendors flagged this file as malicious.

Antivirus Vendor Detection
AVG PSW.Banker6.DVF
Ikarus Trojan-Downloader.Win32.Adload
AhnLab-V3 Trojan/Win32.Gen
AntiVir TR/Spy.782848.5
Sophos Mal/Banc-C
BitDefender Gen:Trojan.Heur.DP.VGW@aWgVRynG
Kaspersky HEUR:Trojan.Win32.Generic
Symantec Trojan.Gen.2
Panda Suspicious file
BitDefender Gen:Heur.MSIL.Krypt.2
AVG Generic22.OVV
Ikarus Trojan.SuspectCRC
AhnLab-V3 Trojan/Win32.Agent
Microsoft Backdoor:MSIL/Firsot.A
Antiy-AVL Trojan/MSIL.Agent.gen

File System Details

Backdoor.Firsot.A may create the following file(s):
# File Name MD5 Detections
1. win.exe 4bb7c1d63acac227fc880a1e614c18e4 8
2. kip-2.56461E+11.exe e98443ca5c4a94fc22c411aa41bedfce 1