Threat Database Trojans Trojan.SystemBC.A

Trojan.SystemBC.A

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 21,501
Threat Level: 90 % (High)
Infected Computers: 2,234
First Seen: June 24, 2014
Last Seen: April 29, 2026
OS(es) Affected: Windows

The detection of Trojan.SystemBC.A on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise the security and integrity of your computer, and it's essential to understand its nature and take steps to remove it.

What Is Trojan.SystemBC.A?

Trojan.SystemBC.A is a type of Trojan horse malware, which is a broad category of malicious software that disguises itself as legitimate programs. The name "Trojan" refers to the Trojan horse of legend, where a seemingly harmless entity conceals a dangerous threat. In the context of computer security, a Trojan horse is a program that appears to perform a desirable function but instead facilitates unauthorized access to the user's system or data.

How Trojan.SystemBC.A Operates

While specific details about Trojan.SystemBC.A's operation are not available, Trojans generally operate by exploiting vulnerabilities in software or manipulating users into installing them. Once installed, they can create backdoors for remote access, steal sensitive information, or install additional malware. The lack of specific indicators for this threat means that users must rely on general best practices for malware removal and system security.

Symptoms of Infection

Identifying a Trojan infection can be challenging due to its stealthy nature. However, some common symptoms may indicate the presence of malware like Trojan.SystemBC.A. These include unusual system behavior, such as slow performance, frequent crashes, or unfamiliar programs and icons. Additionally, if your antivirus software is disabled without your knowledge or if you notice unauthorized changes to your system settings, it could be a sign of a Trojan infection.

  • Unexplained changes in system settings or the appearance of unfamiliar programs.
  • Increased CPU usage or significant slowdowns in system performance.
  • Frequent system crashes or freezes.
  • Disabling of security software without user intervention.

How to Remove Trojan.SystemBC.A

Removing Trojan.SystemBC.A requires a systematic approach to ensure that all components of the malware are eliminated. Here’s a step-by-step guide:

  1. Enter Safe Mode with Networking: This mode allows you to use the internet while disabling most background programs, making it easier to remove malware.
  2. Perform a Full Scan: Use a reputable antivirus tool, such as SpyHunter, to conduct a full scan of your system. This can help identify and remove the malware.
  3. Uninstall Suspicious Programs: Go through your installed programs and uninstall any that you don’t recognize or that were installed around the time the malware was detected.
  4. Reset Your Browser: Resetting browsers like Chrome, Firefox, or Edge to their default settings can remove any malicious extensions or settings changes made by the Trojan.
  5. Reboot and Re-scan: After taking the above steps, reboot your computer and perform another full scan with your antivirus software to ensure that the malware has been completely removed.

Conclusion

The removal of Trojan.SystemBC.A is crucial to restoring the security and integrity of your computer. By following the steps outlined above and maintaining good security practices, such as regularly updating your antivirus software and being cautious with email attachments and downloads, you can significantly reduce the risk of future infections. Remember, preventing malware infections is always more effective than trying to remove them after they have taken hold.

Analysis Report

General information

Family Name: Trojan.SystemBC.A
Signature status: No Signature

Known Samples

MD5: f8cf4064560064aff327cfea2eb9017a
SHA1: 814fc011d368efd60779564225d49ac6fbba571d
SHA256: 5780C7788362C809BA2C53895B953C61DFCB68660800A20C822C594469E22770
File Size: 16.38 KB, 16384 bytes
MD5: d089c4c45816b4884f96489e94740c4f
SHA1: b33230afcab34d442556209c8a94b2eb53bc642c
SHA256: E6669C5AEC66B050D80AF3C75C62D49E61BF66097250D5CB0D15CF698E0EEC74
File Size: 7.68 KB, 7680 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 relocations information
  • File doesn't have resources
  • File doesn't have security information
  • File is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is Native application (NOT .NET application)
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  • 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 Traits

  • No Version Info
  • x86

Block Information

Total Blocks: 25
Potentially Malicious Blocks: 9
Whitelisted Blocks: 2
Unknown Blocks: 14

Visual Map

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

Similar Families

  • SystemBC.A

Files Modified

File Attributes
c:\programdata\rfseh\vubvhhi.exe Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144

Registry Modifications

Key::Value Data API Name
HKCU\software\microsoft\windows\currentversion\run::socks5 powershell.exe -windowstyle hidden -Command "& 'c:\users\user\downloads\b33230afcab34d442556209c8a94b2eb53bc642c_0000007680'" RegNtPreCreateKey

Windows API Usage

Category API
Network Winsock2
  • WSAStartup
User Data Access
  • GetUserNameEx
Network Winsock
  • closesocket
  • getaddrinfo
  • inet_addr
  • setsockopt
  • socket

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