Threat Database Backdoors Backdoor.Remcos.HF

Backdoor.Remcos.HF

By CagedTech in Backdoors

Threat Scorecard

Popularity Rank: 18,928
Threat Level: 60 % (Medium)
Infected Computers: 25
First Seen: May 30, 2023
Last Seen: July 7, 2026
OS(es) Affected: Windows

The detection of Backdoor.Remcos.HF on your system indicates a potentially serious security threat. This detection name suggests a backdoor-type malware, which can allow unauthorized access to your computer. It is essential to understand the nature of this threat and take immediate action to remove it and prevent further damage.

What Is Backdoor.Remcos.HF?

Backdoor.Remcos.HF is a type of malware that can create a backdoor on an infected computer, allowing attackers to access and control the system remotely. This can lead to a range of malicious activities, including data theft, unauthorized software installation, and exploitation of system resources. The name "Backdoor.Remcos.HF" itself does not necessarily indicate a specific malware family, but rather a detection category.

How Backdoor.Remcos.HF Operates

Backdoor malware like Backdoor.Remcos.HF typically operates by creating a covert communication channel between the infected computer and a command and control (C2) server controlled by the attackers. This channel can be used to send commands to the infected system, steal sensitive information, or install additional malware. The backdoor can be installed through various means, such as exploited vulnerabilities, phishing attacks, or drive-by downloads.

Symptoms of Infection

Identifying a backdoor infection can be challenging, as these types of malware are designed to remain stealthy. However, some common symptoms may include unusual network activity, slow system performance, or unexpected changes to system settings. You may also notice unfamiliar programs or processes running on your system, or receive alerts from your security software indicating suspicious activity.

  • Unexplained changes to system settings or configuration
  • Unfamiliar programs or processes running on your system
  • Increased network activity or unusual traffic patterns
  • Slow system performance or crashes
  • Security software alerts indicating suspicious activity

How to Remove Backdoor.Remcos.HF

To remove Backdoor.Remcos.HF from your system, follow these steps:

  1. Boot your system in Safe Mode with Networking to prevent the malware from loading
  2. Run a full scan with a reputable anti-malware tool, such as SpyHunter, to detect and remove the backdoor
  3. Uninstall any suspicious programs or applications that may be related to the infection
  4. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or plugins
  5. Reboot your system and run another full scan to ensure the malware has been completely removed

Conclusion

Removing Backdoor.Remcos.HF from your system requires immediate attention to prevent further damage. By following the steps outlined above and taking proactive measures to secure your system, you can help prevent future infections and protect your sensitive information. Remember to always keep your operating system, software, and security tools up to date, and be cautious when clicking on links or opening attachments from unknown sources.

Analysis Report

General information

Family Name: Backdoor.Remcos.HF
Signature status: No Signature

Known Samples

MD5: 301d5c00da25ba3a241e5e045c28ab92
SHA1: de9ffcff48fab6c04f08d0a222213bf02e7da780
SHA256: B219736E23EC0901C175B051CF4817492342FFABAE808C357EFCD711F3800ED8
File Size: 303.62 KB, 303616 bytes
MD5: 5dd54dc199eb229a8342b62d463f8bef
SHA1: 69a0d206c46293d1f5a065cde99b4f018d491f1c
SHA256: CEF3001AD08D36F66B360EFC96650B47313A3179FFDB850AC117D0E3201F4AC6
File Size: 476.67 KB, 476672 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have security information
  • File has TLS 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)
  • 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)

File Traits

  • HighEntropy
  • No Version Info
  • WriteProcessMemory
  • x86

Block Information

Total Blocks: 2,137
Potentially Malicious Blocks: 810
Whitelisted Blocks: 1,327
Unknown Blocks: 0

Visual Map

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

Similar Families

  • Filecoder.JD
  • GandCrab.CC
  • Kryptik.BJA
  • Kryptik.EDHP
  • NoGoSearch.A
Show More
  • Remcos.HD
  • Remcos.HF
  • Remcos.HG
  • Remcos.HH
  • Remcos.HK

Files Modified

File Attributes
c:\windows\com surrogate.exe Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144
c:\windows\com surrogate.exe Synchronize,Write Attributes

Registry Modifications

Key::Value Data API Name
HKLM\software\microsoft\windows\currentversion\policies\explorer\run::pworstrtsf-lcr1fe "C:\Windows\COM Surrogate.exe" RegNtPreCreateKey

Windows API Usage

Category API
Anti Debug
  • IsDebuggerPresent
User Data Access
  • GetUserObjectInformation
Process Manipulation Evasion
  • ReadProcessMemory

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