Threat Database Trojans Trojan.Agent.OGA

Trojan.Agent.OGA

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 6,329
Threat Level: 80 % (High)
Infected Computers: 110
First Seen: March 15, 2025
Last Seen: July 12, 2026
OS(es) Affected: Windows

The detection of Trojan.Agent.OGA 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.OGA?

Trojan.Agent.OGA is a type of Trojan horse malware, which is a broad category of malicious software that disguises itself as legitimate programs. The name "Trojan" refers to the Trojan horse from Greek mythology, where a seemingly harmless gift was used to infiltrate and conquer the city of Troy. Similarly, Trojan malware appears as harmless software but contains malicious code designed to harm your computer or steal your data. The ".OGA" part of the name might indicate a specific variant or a designation used by security software to identify this particular strain of malware.

How Trojan.Agent.OGA Operates

Trojan.Agent.OGA, like other Trojans, operates by deceiving users into installing it on their computers. This can happen through various means, such as downloading software from untrusted sources, opening malicious email attachments, or clicking on links that lead to compromised websites. Once installed, the malware can perform a variety of malicious actions, including but not limited to, stealing personal data, installing additional malware, or providing unauthorized access to the infected computer. The exact operations of Trojan.Agent.OGA can vary, but its primary goal is to compromise the security and integrity of the infected system.

Symptoms of Infection

Identifying a Trojan infection can be challenging because these malwares are designed to remain stealthy. However, there are several symptoms that might indicate the presence of Trojan.Agent.OGA or similar malware on your computer. These include unexpected changes to your computer's settings, unfamiliar programs or icons, slow performance, frequent crashes, or unusual network activity. If you notice any of these symptoms, it is crucial to take immediate action to scan your computer for malware.

How to Remove Trojan.Agent.OGA

  1. Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow for a clean environment to perform removal steps.
  2. Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your computer. This will help identify and remove all instances of the malware.
  3. Uninstall any suspicious programs that you do not recognize or that were installed around the time your computer became infected.
  4. Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any malicious extensions or settings changes made by the malware.
  5. Reboot your computer and perform another full scan with your anti-malware tool to ensure that all remnants of the malware have been removed.

Conclusion

Removing Trojan.Agent.OGA requires careful and immediate action to prevent further damage to your computer and to protect your personal data. By following the steps outlined above and maintaining good computer hygiene, such as regularly updating your operating system and security software, avoiding suspicious downloads, and being cautious with email attachments and links, you can significantly reduce the risk of future infections. Remember, vigilance and proactive measures are key to safeguarding your digital security in today's evolving threat landscape.

Analysis Report

General information

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

Known Samples

MD5: 5427b3fac1181d2340ff83f6fc8bb0ef
SHA1: 2c063beb6833687e3bffcd51dd6c47684071a0cd
SHA256: 7DAC5C406E08CA022E27ECB5EEEF890EEED893DE79C6F29FD53719E7729E7ABA
File Size: 60.42 KB, 60416 bytes

Windows Portable Executable Attributes

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

File Traits

  • dll
  • x64

Block Information

Total Blocks: 200
Potentially Malicious Blocks: 3
Whitelisted Blocks: 179
Unknown Blocks: 18

Visual Map

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 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 x 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 2 0 0 0 0 0 0 0 1 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 2 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

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtFreeVirtualMemory
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  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenProcessTokenEx
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenThreadTokenEx
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWorkerFactoryWorkerReady
  • ntdll.dll!NtWriteFile
  • ntdll.dll!NtWriteVirtualMemory
  • win32u.dll!NtGdiBitBlt
  • win32u.dll!NtGdiCreateBitmap
  • win32u.dll!NtGdiCreateCompatibleDC
  • win32u.dll!NtGdiCreateDIBitmapInternal
  • win32u.dll!NtGdiCreateSolidBrush
  • win32u.dll!NtGdiDeleteObjectApp
  • win32u.dll!NtGdiExtGetObjectW
  • win32u.dll!NtGdiGetDCforBitmap
  • win32u.dll!NtGdiGetDCObject
  • win32u.dll!NtGdiGetDeviceCaps
  • win32u.dll!NtGdiRestoreDC
  • win32u.dll!NtGdiSaveDC
  • win32u.dll!NtGdiSelectBitmap
  • win32u.dll!NtGdiSetDIBitsToDeviceInternal
  • win32u.dll!NtUserBuildHwndList
  • win32u.dll!NtUserCallTwoParam
  • win32u.dll!NtUserCreateEmptyCursorObject
  • win32u.dll!NtUserCreateWindowEx
  • win32u.dll!NtUserDestroyWindow
  • win32u.dll!NtUserFindExistingCursorIcon
  • win32u.dll!NtUserGetAncestor
  • win32u.dll!NtUserGetClassInfoEx
  • win32u.dll!NtUserGetClassName
  • win32u.dll!NtUserGetDC
  • win32u.dll!NtUserGetGUIThreadInfo
  • win32u.dll!NtUserGetIconInfo
  • win32u.dll!NtUserGetIconSize
  • win32u.dll!NtUserGetImeInfoEx
  • win32u.dll!NtUserGetKeyboardLayout
  • win32u.dll!NtUserGetObjectInformation
  • win32u.dll!NtUserGetProcessWindowStation
  • win32u.dll!NtUserGetProp
  • win32u.dll!NtUserGetThreadDesktop
  • win32u.dll!NtUserGetThreadState
  • win32u.dll!NtUserGetWindowCompositionAttribute
  • win32u.dll!NtUserIsNonClientDpiScalingEnabled
  • win32u.dll!NtUserIsTopLevelWindow
  • win32u.dll!NtUserMessageCall
  • win32u.dll!NtUserRegisterClassExWOW
  • win32u.dll!NtUserRegisterWindowMessage
  • win32u.dll!NtUserReleaseDC
  • win32u.dll!NtUserRemoveProp
  • win32u.dll!NtUserSelectPalette
  • win32u.dll!NtUserSetCursorIconData
  • win32u.dll!NtUserSetWindowFNID
  • win32u.dll!NtUserSetWindowLongPtr
  • win32u.dll!NtUserSetWindowPos
  • win32u.dll!NtUserUpdateInputContext

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