Threat Database Backdoors Backdoor.Remcos.HK

Backdoor.Remcos.HK

By CagedTech in Backdoors

Threat Scorecard

Popularity Rank: 16,526
Threat Level: 60 % (Medium)
Infected Computers: 290
First Seen: February 15, 2024
Last Seen: June 8, 2026
OS(es) Affected: Windows

The detection of Backdoor.Remcos.HK on your system indicates a potential security threat that requires immediate attention. This report provides an overview of the threat, its operating methods, symptoms of infection, and steps to remove it from your system.

What Is Backdoor.Remcos.HK?

Backdoor.Remcos.HK is a type of backdoor threat that allows unauthorized access to your system. Backdoors are malicious programs designed to bypass normal security mechanisms, granting hackers remote control over infected computers. The name "Backdoor.Remcos.HK" suggests it is a variant of a backdoor threat, but without specific details, it's essential to focus on general guidance for removal and prevention.

How Backdoor.Remcos.HK Operates

Backdoor threats like Backdoor.Remcos.HK typically operate by creating a covert communication channel between the infected computer and a command and control server controlled by the attacker. This channel allows the attacker to send commands to the infected system, potentially leading to data theft, installation of additional malware, or use of the system for malicious activities such as spamming or launching further attacks. The exact mechanisms can vary, but the core principle involves exploiting vulnerabilities or using social engineering tactics to gain initial access.

Symptoms of Infection

Symptoms of a backdoor infection can be subtle and may not always be immediately apparent. Common indicators include unusual network activity, slow system performance, unexpected changes to system settings, or the appearance of unfamiliar programs or files. However, some backdoors are designed to operate stealthily, making them difficult to detect without specific security tools. If your security software has detected Backdoor.Remcos.HK, it's crucial to take prompt action to mitigate potential damage.

How to Remove Backdoor.Remcos.HK

  1. Enter Safe Mode with Networking to prevent the malware from spreading or communicating with its command and control server. This mode allows you to use the internet to download removal tools while limiting the malware's ability to interfere.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter. Ensure the tool is updated with the latest definitions to enhance detection and removal capabilities.
  3. Uninstall any suspicious programs or applications that you do not recognize or no longer need. Be cautious during this process, as some legitimate programs might be mistakenly removed.
  4. Reset your web browsers (Chrome, Firefox, Edge) to their default settings. This step can help remove any malicious extensions or settings changes made by the backdoor.
  5. Reboot your system and perform another full scan with your anti-malware tool to ensure that all components of the Backdoor.Remcos.HK have been removed.

Conclusion

The removal of Backdoor.Remcos.HK requires careful and systematic steps to ensure that all malicious components are eliminated from your system. After removal, it's essential to maintain vigilance by keeping your operating system, software, and security tools updated. Regularly scanning your system for malware and being cautious with emails, attachments, and downloads can help prevent future infections. Remember, security is an ongoing process that requires consistent effort to protect your digital assets.

Analysis Report

General information

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

Known Samples

MD5: a1a4b696de22eca0cfc7ce8ec49940a1
SHA1: 157601bcf10f3b0f5eb094ffc878b0081f7e5c7e
SHA256: C5CDB9DCE8D674E9AD897E4D72023BD2A2D1E7227B13AB4CCAA1DC364CFC4FE2
File Size: 498.69 KB, 498688 bytes
MD5: 75d11415d41b9c1381995de7bc676e06
SHA1: f10253825f890fb3f33488eaadc1b26e36b05fcf
SHA256: E1A5480D128194DC3DBDCAC889C2503C4D57784DF15C5BDA13628EB80882CF99
File Size: 568.83 KB, 568832 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)
Show More
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Icons

Windows PE Version Information

Name Value
Company Name Manager
File Description Manager
File Version 1.0.0.0
Internal Name Manager
Legal Copyright © 2025 Manager
Product Name Manager
Product Version 1.0.0.0

File Traits

  • HighEntropy
  • No Version Info
  • WriteProcessMemory
  • x86

Block Information

Total Blocks: 1,958
Potentially Malicious Blocks: 44
Whitelisted Blocks: 1,804
Unknown Blocks: 110

Visual Map

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

Similar Families

  • Remcos.HK

Files Modified

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

Registry Modifications

Key::Value Data API Name
HKLM\software\wow6432node\microsoft\windows\currentversion\run::rmc-ppb9eq "C:\ProgramData\svshost\svshost.exe" RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect RegNtPreCreateKey

Windows API Usage

Category API
Anti Debug
  • IsDebuggerPresent
  • NtQuerySystemInformation
User Data Access
  • GetUserObjectInformation
Process Manipulation Evasion
  • ReadProcessMemory
Network Wininet
  • HttpOpenRequest
  • HttpSendRequest
  • InternetConnect
  • InternetOpen
  • InternetOpenUrl
  • InternetReadFile
Network Winhttp
  • WinHttpOpen

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