Threat Database Trojans Trojan.Agent.HGB

Trojan.Agent.HGB

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 1
First Seen: December 27, 2023
Last Seen: December 9, 2025
OS(es) Affected: Windows

The detection of Trojan.Agent.HGB on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise the integrity of your computer, stealing sensitive information or taking control of your system for malicious purposes. It is essential to understand the nature of this threat and take prompt action to remove it and prevent future infections.

What Is Trojan.Agent.HGB?

Trojan.Agent.HGB is a type of Trojan horse malware, which is a broad category of threats that disguise themselves as legitimate software to gain unauthorized access to a computer system. The name "Trojan" refers to the method of infection, where the malware is hidden within a seemingly harmless program or file, much like the legendary Trojan Horse of ancient Greece. Once inside, the malware can cause a wide range of problems, from data theft and system damage to the installation of additional malware or even ransomware.

How Trojan.Agent.HGB Operates

Like other Trojans, Trojan.Agent.HGB operates by exploiting vulnerabilities in software or tricking users into installing it. This can happen through various means, such as opening malicious email attachments, clicking on links to infected websites, or downloading compromised software from untrusted sources. Once installed, the malware can communicate with its command and control servers to receive instructions, which might include stealing personal data, logging keystrokes, or using the infected computer as part of a botnet for distributed denial-of-service (DDoS) attacks.

Symptoms of Infection

Identifying a Trojan infection can be challenging because these malware types often run silently in the background. However, there are several symptoms that might indicate your system is infected with Trojan.Agent.HGB or similar malware. These include unexpected system crashes, slow performance, unfamiliar programs or icons on your desktop, unexpected pop-ups, or changes to your browser settings. If you notice any of these symptoms, it's crucial to act quickly to minimize potential damage.

How to Remove Trojan.Agent.HGB

  1. Boot your computer in Safe Mode with Networking. This will help prevent the malware from loading and give you a cleaner environment to work in.
  2. Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. Ensure the tool is updated with the latest definitions to increase the chances of detecting and removing the malware.
  3. Uninstall any suspicious programs or applications that you don't recognize or that were installed around the time you suspect the infection occurred.
  4. Reset your web browsers (Google Chrome, Mozilla Firefox, Microsoft Edge, etc.) to their default settings. This can help remove any malicious extensions or settings changes made by the malware.
  5. After completing the above steps, reboot your computer and perform another full scan with your anti-malware tool to ensure that the threat has been fully removed.

Conclusion

Removing Trojan.Agent.HGB requires a combination of technical knowledge and the right tools. By following the steps outlined above and maintaining good cybersecurity practices, such as regularly updating your software, using strong antivirus protection, and being cautious with emails and downloads, you can significantly reduce the risk of future infections. Remember, prevention is key, but swift action upon detection is crucial to minimizing the impact of malware. Stay vigilant and ensure your system and personal data are protected against evolving cyber threats.

Analysis Report

General information

Family Name: Trojan.Agent.HGB
Signature status: Self Signed

Known Samples

MD5: ee9cb528b0f88cf535824018aa870211
SHA1: b8d16c6f8ac86ae3b21592d6ec741753d5d39fce
SHA256: 16427C03508B312DA808E89258EFB436E967EF5DF32F2D0DD6690F134294EF4A
File Size: 2.17 MB, 2168432 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have resources
  • File has TLS information
  • File is 64-bit executable
  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI application
  • 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)

Digital Signatures

Signer Root Status
Loudy Software Loudy Software Self Signed

File Traits

  • 2+ executable sections
  • HighEntropy
  • No Version Info
  • ntdll
  • x64

Block Information

Total Blocks: 141
Potentially Malicious Blocks: 1
Whitelisted Blocks: 123
Unknown Blocks: 17

Visual Map

? ? ? ? ? ? ? 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ? 0 ? 0 0 0 ? ? ? 0 ? 0 0 0 0 0 0 0 0 0 ? 0 ? x 0 0 0 0 0 0 0 ? ? 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

  • Agent.HGB

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
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  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityObject
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryTimerResolution
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtReadRequestData
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTerminateProcess
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtWriteFile
  • UNKNOWN

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