Threat Database Trojans Trojan.Conficker.H

Trojan.Conficker.H

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 5
First Seen: July 19, 2024
Last Seen: December 27, 2025
OS(es) Affected: Windows

The detection of Trojan.Conficker.H on your system indicates a potential security threat that requires immediate attention. This report provides an overview of the threat, its operating mechanisms, symptoms of infection, and a step-by-step guide on how to remove it from your system.

What Is Trojan.Conficker.H?

Trojan.Conficker.H is a type of malware that can compromise the security and integrity of your computer system. The term "Trojan" refers to a class of malware that disguises itself as legitimate software, allowing it to infiltrate systems without being detected. Once inside, it can cause a variety of problems, including data theft, system crashes, and the installation of additional malware.

How Trojan.Conficker.H Operates

Malware like Trojan.Conficker.H typically operates by exploiting vulnerabilities in software or tricking users into installing it. Once installed, it can communicate with its creators, allowing them to control the infected computer remotely. This can lead to unauthorized access to personal data, the spread of more malware, and even the use of the infected computer in botnets for malicious activities such as spamming or distributed denial-of-service (DDoS) attacks.

Symptoms of Infection

Identifying a Trojan infection can be challenging because these types of malware are designed to remain hidden. However, some common symptoms may indicate an infection: slow system performance, frequent crashes, unfamiliar programs or icons, unexpected changes in system settings, and increased network activity without apparent cause. If you suspect that your system is infected, it's crucial to take action promptly to minimize potential damage.

How to Remove Trojan.Conficker.H

  1. Boot your computer in Safe Mode with Networking. This will limit the malware's ability to interfere with the removal process and allow you to download necessary tools.
  2. Download and install a reputable anti-malware tool, such as SpyHunter, which can detect and remove Trojan.Conficker.H and other malware. Perform a full scan of your system to identify all malicious components.
  3. Uninstall any suspicious programs that you do not recognize or that were installed without your consent. Be cautious and only remove programs that you are sure are malicious, as uninstalling legitimate software can cause system instability.
  4. Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings. This can help remove any malicious extensions or settings that the malware may have altered.
  5. Reboot your computer and perform another full scan with your anti-malware tool to ensure that all components of the malware have been removed. Repeat this process until no more threats are detected.

Conclusion

Removing Trojan.Conficker.H requires careful and systematic steps to ensure that all malicious components are eliminated from your system. It's also essential to practice preventive measures to avoid future infections, such as keeping your operating system and software up to date, using strong and unique passwords, avoiding suspicious downloads and email attachments, and regularly scanning your system with anti-malware tools. By being proactive and vigilant, you can significantly reduce the risk of malware infections and protect your personal data and system integrity.

Analysis Report

General information

Family Name: Trojan.Conficker.H
Packers: UPX!
Signature status: No Signature

Known Samples

MD5: 3f46687b1f8d403b901e46a3704508ea
SHA1: e79505f66105fa3be8da6c4cec95d6ddd033bd6f
SHA256: 31B781957860D43556D738C2F317CAA7808E7702FCC68F50A5711B5A3A97BFB8
File Size: 159.14 KB, 159140 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 resources
  • File doesn't have security information
  • File has been packed
  • 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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  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Traits

  • big overlay
  • dll
  • HighEntropy
  • packed
  • x86

Block Information

Total Blocks: 401
Potentially Malicious Blocks: 375
Whitelisted Blocks: 26
Unknown Blocks: 0

Visual Map

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

Similar Families

  • Conficker.H

Registry Modifications

Key::Value Data API Name
HKLM\software\microsoft\windows\currentversion\explorer\advanced\folder\hidden\showall::checkedvalue RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer::shellstate $⠶b RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::hidden  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::showcompcolor  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::hidefileext RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::dontprettypath RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::showinfotip  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::hideicons RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::mapnetdrvbtn RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::webview  RegNtPreCreateKey
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HKCU\software\microsoft\windows\currentversion\explorer\advanced::filter RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::showsuperhidden RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::separateprocess RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::autocheckselect RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::iconsonly RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::showtypeoverlay  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer\advanced::showstatusbar  RegNtPreCreateKey

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtQueryAttributesFile
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  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationFile
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWriteFile
Process Manipulation Evasion
  • NtUnmapViewOfSection
  • ReadProcessMemory
Process Shell Execute
  • CreateProcess
Anti Debug
  • IsDebuggerPresent
  • NtQuerySystemInformation
User Data Access
  • GetUserObjectInformation

Shell Command Execution

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\e79505f66105fa3be8da6c4cec95d6ddd033bd6f_0000159140.,LiQMAxHB

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