Threat Database Trojans Trojan.Injector.Gen.GYZ

Trojan.Injector.Gen.GYZ

By CagedTech in Trojans
Published:

Threat Scorecard

Threat Level: 80 % (High)
First Seen: July 27, 2026
Last Seen: October 22, 2026
OS(es) Affected: Windows

Trojan.Injector.Gen.GYZ is a Trojan horse infection that targets Windows computers and is classified as a dangerous threat due to its ability to inject malicious code into other processes and give attackers deep access to an infected system. It has been observed disguising itself using names and branding associated with legitimate-looking software, which helps it slip past casual inspection by unsuspecting users.

What Trojan.Injector.Gen.GYZ Does

Once active on a system, Trojan.Injector.Gen.GYZ runs silently in the background, avoiding obvious signs of its presence. Its core behavior revolves around process injection — it is designed to manipulate the memory of other running processes, unmap legitimate code sections, and write its own code into them. This technique allows the Trojan to hide its activity inside trusted system processes, making it harder for users and basic security checks to notice anything unusual. The malware also uses low-level system calls to manage memory, files, and process information, as well as techniques associated with anti-debugging, which are typically used to resist analysis and detection. In many cases, threats in this category are built to give remote attackers substantial control over the compromised machine, potentially allowing them to run additional commands, install further malicious components, or manipulate the system without the owner's knowledge.

How It Usually Gets Onto Computers

Trojan.Injector.Gen.GYZ typically spreads through deceptive channels rather than by exploiting a single specific flaw. Common infection paths for this type of threat include software downloaded from untrustworthy or malicious websites, bundled installers, cracked or pirated applications, and email attachments from unknown or untrusted senders. Attachments may be disguised with familiar-looking file types, including executables or files made to appear as images or videos, tricking users into opening them. Trojans of this kind can also piggyback on unofficial tools or modified game-related utilities, since users are often eager to install such software without verifying its source carefully.

Risks for the User

Because Trojan.Injector.Gen.GYZ can inject code into other processes and interact with core system functions, it poses serious risks. A compromised machine could be used to steal personal information, log activity, download and run additional malware, or give an attacker remote access to the system. Users may experience degraded system performance, unexpected network activity, or unauthorized changes to files and settings. Since the Trojan is not digitally signed and avoids obvious detection, it can remain active for extended periods without the user realizing anything is wrong.

Signs of Infection

Typical warning signs of this type of Trojan infection include unusual slowdowns, unexpected processes running in the background, strange network connections, security tools being disabled or failing to update, and unfamiliar files appearing in download or system folders. Users might also notice unexpected pop-ups, crashes, or changes to system behavior that cannot be explained by normal use.

How to Stay Protected

To reduce the risk of infection, avoid downloading software from unofficial or suspicious websites, and never open email attachments from unknown senders, especially executable files disguised as documents or media. Keep the operating system and installed applications updated to close known security gaps, and use reputable, up-to-date antimalware protection to scan new downloads before running them. Regularly back up important files and remain cautious of free or cracked software, as these are common vectors for Trojans like this one.

Analysis Report

General information

Family Name: Trojan.Injector.Gen.GYZ
Signature status: No Signature

Known Samples

MD5: 088d638720562c7771b30debf8f45e04
SHA1: 94590a8d2cc13c54404f124b2364bd7d3183b707
SHA256: 02172A080BF45AD6AC38B40EEAF858FDD771F300A60A9B4A294C9B0D53D8B136
File Size: 601.60 KB, 601600 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have security information
  • File has exports table
  • 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 1 more
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

Windows PE Version Information

Name Value
Company Name Steam006
File Description GreenLuma
File Version 1.8.3.0
Internal Name GreenLuma
Legal Copyright Steam006
Original Filename GreenLuma_2026.dll
Product Name GreenLuma 2026
Product Version 1.8.3.0

File Traits

  • dll
  • fptable
  • WriteProcessMemory
  • x86

Block Information

Total Blocks: 1,778
Potentially Malicious Blocks: 391
Whitelisted Blocks: 1,387
Unknown Blocks: 0

Visual Map

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

Similar Families

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
Show 18 more
  • 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
Process Shell Execute
  • CreateProcess
Anti Debug
  • NtQuerySystemInformation

Shell Command Execution

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\94590a8d2cc13c54404f124b2364bd7d3183b707_0000601600.,LiQMAxHB