Threat Database Trojans Trojan.Agent.GJJ

Trojan.Agent.GJJ

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 10
First Seen: February 13, 2025
Last Seen: March 19, 2026
OS(es) Affected: Windows

The detection of Trojan.Agent.GJJ 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, steal sensitive information, or disrupt its normal functioning. 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.GJJ?

Trojan.Agent.GJJ is a type of Trojan horse malware, which is a broad category of malicious software that disguises itself as legitimate programs. The name "Trojan.Agent.GJJ" suggests that it is a variant of Trojan horse malware, but without more specific information, it's challenging to determine its exact nature or the specific family it belongs to. Trojans are known for their ability to sneak into systems by masquerading as useful applications, only to reveal their malicious intentions once installed.

How Trojan.Agent.GJJ Operates

Like other Trojans, Trojan.Agent.GJJ likely operates by exploiting vulnerabilities in software or tricking users into installing it. Once inside a system, it can perform a variety of malicious activities. These can include stealing personal data, installing additional malware, providing unauthorized access to the system, or using the system's resources for malicious purposes such as cryptocurrency mining or distributing spam. The exact operations of Trojan.Agent.GJJ would depend on its specific design and the goals of its creators.

Symptoms of Infection

The symptoms of a Trojan.Agent.GJJ infection can vary widely, depending on its intended purpose. Common signs include unusual system behavior, such as unexpected pop-ups, slow performance, or frequent crashes. You might also notice unfamiliar programs or icons on your desktop, changes to your browser settings, or unexpected network activity. In some cases, the infection might not display any noticeable symptoms, making it difficult to detect without proper security software.

How to Remove Trojan.Agent.GJJ

  1. Enter Safe Mode with Networking to limit the malware's ability to interfere with the removal process. This mode allows you to use the internet to download removal tools while minimizing system activity.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter. Ensure the tool is updated to the latest version to increase the chances of detecting and removing the malware.
  3. Uninstall suspicious programs that you do not recognize or that were installed around the time the malware was detected. Be cautious and only remove programs you are sure are not essential to your system's operation.
  4. Reset your browsers (Chrome, Firefox, Edge, etc.) to their default settings. This can help remove any malicious extensions or settings changes made by the malware.
  5. Reboot your system and perform another full scan to ensure the malware has been completely removed. Repeated scans can help confirm that no remnants of the malware remain.

Conclusion

Removing Trojan.Agent.GJJ requires careful and systematic steps to ensure that all components of the malware are eliminated from your system. It's crucial to stay vigilant and maintain good security practices, such as keeping your operating system and software up to date, using strong, unique passwords, and being cautious when opening email attachments or downloading software from the internet. By taking these measures, you can protect your system from future infections and maintain your digital security.

Analysis Report

General information

Family Name: Trojan.Agent.GJJ
Signature status: No Signature

Known Samples

MD5: 7886b01116e6c59b40684f7e87d37def
SHA1: bc20e46f6c6434f8b965abe82ec46b252a387614
SHA256: 7FCAC24782FB08AF17027D2C96BFD9A5F0D54A528F3C7EBBF2947B2AADA2A9FF
File Size: 2.95 MB, 2951168 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have resources
  • File doesn't have security information
  • File has TLS information
  • File is 64-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
Show More
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Traits

  • fptable
  • No Version Info
  • ntdll
  • x64

Block Information

Total Blocks: 2,018
Potentially Malicious Blocks: 1
Whitelisted Blocks: 2,017
Unknown Blocks: 0

Visual Map

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

Similar Families

  • Agent.IDE

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateIoCompletion
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
Show More
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtReadRequestData
  • ntdll.dll!NtRemoveIoCompletion
  • ntdll.dll!NtRemoveIoCompletionEx
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationObject
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSetIoCompletion
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWriteFile
  • ntdll.dll!NtYieldExecution
  • UNKNOWN
Cert Store Read
  • CertOpenStore
Network Winsock2
  • WSASend
  • WSASocket
  • WSAStartup
Network Winsock
  • bind
  • closesocket
  • connect
  • getpeername
  • getsockname
  • setsockopt

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