Threat Database Trojans Trojan.Downloader.Gen.AB

Trojan.Downloader.Gen.AB

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 26,454
Threat Level: 80 % (High)
Infected Computers: 1
First Seen: November 18, 2025
Last Seen: May 21, 2026
OS(es) Affected: Windows

The detection of Trojan.Downloader.Gen.AB on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to download and install additional malicious software on your computer, which can lead to a range of problems, including data theft, system compromise, and disruption of normal computer operation.

What Is Trojan.Downloader.Gen.AB?

Trojan.Downloader.Gen.AB is a type of Trojan horse malware that is designed to download and install other malicious programs on your computer. The name "Trojan" refers to the fact that this type of malware disguises itself as a legitimate program or file, but actually contains malicious code. The "Downloader" part of the name indicates that this malware is capable of downloading additional software from the internet, which can include other types of malware, such as viruses, spyware, or adware.

How Trojan.Downloader.Gen.AB Operates

Trojan.Downloader.Gen.AB typically operates by exploiting vulnerabilities in your computer's operating system or applications, or by tricking you into installing it yourself. Once installed, it can connect to a remote server to download and install additional malware, which can include keyloggers, rootkits, or other types of malicious software. This malware can also modify system settings, disable security software, and create backdoors to allow remote access to your computer.

Symptoms of Infection

The symptoms of a Trojan.Downloader.Gen.AB infection can vary, but common signs include slow system performance, unexpected pop-ups or ads, unfamiliar programs or icons on your desktop, and unusual network activity. You may also notice that your computer is crashing or freezing frequently, or that your antivirus software is disabled or not functioning properly. In some cases, you may not notice any symptoms at all, which is why it's essential to run regular virus scans and maintain up-to-date security software.

How to Remove Trojan.Downloader.Gen.AB

  1. Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools.
  2. Download and install a reputable anti-malware tool, such as SpyHunter, and run a full scan to detect and remove all instances of the malware.
  3. Uninstall any suspicious programs or applications that you don't recognize or that were installed recently.
  4. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
  5. Reboot your computer and run another full scan with your anti-malware tool to ensure that all remnants of the malware have been removed.

Conclusion

Removing Trojan.Downloader.Gen.AB from your computer requires careful attention to detail and a thorough understanding of the malware removal process. By following the steps outlined above and maintaining up-to-date security software, you can help protect your computer from this and other types of malware. Remember to always be cautious when downloading software or clicking on links from unknown sources, and never install programs or applications that you don't trust. By taking these precautions, you can help keep your computer and personal data safe from the threats posed by Trojan.Downloader.Gen.AB and other types of malware.

Analysis Report

General information

Family Name: Trojan.Downloader.Gen.AB
Signature status: No Signature

Known Samples

MD5: 17302ca453191d67334f4f0a177b0f55
SHA1: a7020a9cca60c728443b7425b0b9fdca9a531803
SHA256: A7A6E98B53CF1CEEB0DE636E619936C2529F7A36AC58D5064CAB5179F6A51DB9
File Size: 503.81 KB, 503808 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • 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
  • 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)

Windows PE Version Information

Name Value
Company Name TODO: <公司名>
File Description MFCApplication1
File Version 1.0.0.1
Internal Name MFCApplication1.exe
Legal Copyright TODO: (C) <公司名>。 保留所有权利。
Original Filename MFCApplication1.exe
Product Name TODO: <产品名>
Product Version 1.0.0.1

File Traits

  • Default Version Info
  • x64

Block Information

Total Blocks: 1,935
Potentially Malicious Blocks: 5
Whitelisted Blocks: 1,929
Unknown Blocks: 1

Visual Map

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

Similar Families

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtNotifyChangeMultipleKeys
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
Show More
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenSection
  • 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!NtQuerySecurityObject
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN
Other Suspicious
  • SetWindowsHookEx

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