Threat Database Trojans Trojan.Downloader.Agent.H

Trojan.Downloader.Agent.H

By CagedTech in Trojans
Published:
Last updated:

Threat Scorecard

Popularity Rank: 20,541
Threat Level: 90 % (High)
Infected Computers: 33
First Seen: July 24, 2009
Last Seen: September 22, 2026
OS(es) Affected: Windows

The detection of Trojan.Downloader.Agent.H on your system indicates a potential security threat. 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 crashes, and unauthorized access to your system. In this report, we will provide an overview of what Trojan.Downloader.Agent.H is, how it operates, and the steps you can take to remove it from your system.

What Is Trojan.Downloader.Agent.H?

Trojan.Downloader.Agent.H is a type of Trojan horse malware that is designed to download and install additional malicious software on your computer. The name "Trojan" refers to the fact that this type of malware disguises itself as a legitimate program or file, allowing it to bypass your system's security defenses. The "Downloader" part of the name indicates that this malware is specifically designed to download additional malicious software, which can include viruses, spyware, adware, and other types of malware.

How Trojan.Downloader.Agent.H Operates

Trojan.Downloader.Agent.H typically operates by exploiting vulnerabilities in your system's security or by tricking you into downloading and installing it. Once installed, it can download and install additional malicious software, which can include keyloggers, ransomware, and other types of malware. This malware can also communicate with its creators, allowing them to remotely control your system and steal your personal data.

Symptoms of Infection

If your system is infected with Trojan.Downloader.Agent.H, you may notice a range of symptoms, including slow system performance, unexpected pop-ups and ads, and unfamiliar programs or files on your system. You may also notice that your system is crashing or freezing frequently, or that your personal data is being stolen or compromised. In some cases, you may not notice any symptoms at all, which is why it's essential to regularly scan your system for malware.

  • Slow system performance
  • Unexpected pop-ups and ads
  • Unfamiliar programs or files on your system
  • System crashes or freezing
  • Personal data theft or compromise

How to Remove Trojan.Downloader.Agent.H

To remove Trojan.Downloader.Agent.H from your system, follow these steps:

  1. Boot your system in Safe Mode with Networking to prevent the malware from loading.
  2. Use a reputable malware removal tool, such as SpyHunter, to perform a full scan of your system and remove any detected 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 system and perform another full scan to ensure that the malware has been completely removed.

Conclusion

In conclusion, Trojan.Downloader.Agent.H is a type of Trojan horse malware that can download and install additional malicious software on your computer. By understanding how this malware operates and the symptoms of infection, you can take steps to remove it from your system and prevent future infections. Remember to always use reputable malware removal tools, keep your system and software up to date, and be cautious when downloading and installing programs or files from the internet.

File System Details

Trojan.Downloader.Agent.H may create the following file(s):
# File Name MD5 Detections
1. uesiuqcr.exe f1e6adb166bfd58c2b19f16e33fc9512 0

Analysis Report

General information

Family Name: Trojan.Downloader.Agent.H
Signature status: No Signature

Known Samples

MD5: 747bed23cc803b890815c08f451e6f8b
SHA1: adff48a7832a26b64e7ae9903916ece4bfa67651
SHA256: 4889EA62BFB00691D95AB41E5996C716BC938D2CCE4B3EC8BD7D41E41D163059
File Size: 44.57 KB, 44567 bytes

Windows Portable Executable Attributes

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

File Icons

File Traits

  • No Version Info
  • x86

Block Information

Total Blocks: 281
Potentially Malicious Blocks: 36
Whitelisted Blocks: 245
Unknown Blocks: 0

Visual Map

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

Similar Families

  • BrutePFX.A
  • Downloader.Agent.H
  • Kryptik.CLAK
  • Nabony.A
  • Pepis.A
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  • Yak.A

Files Modified

File Attributes
Generic Read,Write Data,Write Attributes,Write extended,Append data
Generic Write,Read Attributes
Synchronize,Write Attributes
c:\users\user\appdata\roaming\microsoft\dvx Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\roaming\microsoft\dvx Synchronize,Write Attributes
c:\users\user\appdata\roaming\microsoft\dvx\env Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\roaming\microsoft\dvx\env Synchronize,Write Attributes
c:\users\user\appdata\roaming\microsoft\dvx\ftshost.exe Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\roaming\microsoft\dvx\ftshost.exe Generic Write,Read Attributes
c:\users\user\appdata\roaming\microsoft\dvx\ftshost.exe Synchronize,Write Attributes

Registry Modifications

Key::Value Data API Name
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect RegNtPreCreateKey
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe 键₼䥾ǝ RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer::slowcontextmenuentries `$�!�:i��+00��� Gs]XM���"�2��FXD�':D��exA-�b�jYҴB�t�� �S� RegNtPreCreateKey
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HKCU\software\microsoft\windows\currentversion\explorer::slowcontextmenuentries `$�!�:i��+00��� Gs]XM���"�2��FXN:���3B��SWsԄI-b�jYҴB�t�� �S� RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\run::psdrv C:\Users\Yovstylh\AppData\Roaming\Microsoft\DVX\ftshost.exe RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 �n8��"ajg�8 �� �v ��T��������%��Bx#��$kF&� (�(X�(�)�`*J*9*�"-!R1`1�1HO1��5,]=�@V�A��D�G�IH[uH�pK��N$N�U_*_�zb"hc�wg�Xh�rj�bk`k�ql(�lR p*q�Xr�BtǤvy�w�ny�9 RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc4c75 ᇪā먎ÍÆŐ耄»$‘‘鬴j$‘鵰‘¥]湯捥牯略灡獜敨汬睜湩潤獷献潴慲敧獜慴整敲潰敶扲捳捡敨挮灰愀晤㑦愸㠷㈳㉡戶㐶㝥敡㤹㌰ㄹ收散戴慦㜶㔶弱〰〰㐰㔴㜶眀湩潤獷献潴慲敧搮汬匀慴整敒潰敖扲䍳捡敨剟扥極摬慃档e RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475 鵃ȁ ਪˣ鈯ˣ遙̃豤̃偫~অˣ炑̃龡^濖̃賬̃"獖}偫~엦1਷ˣ邯̃뫯ʃeꙥžᐊ엦1¶fꙥžiꙥžpꙥžr/֢s RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 �n�8��"ajg�8 �� �v ����T��������%��Bx#��$kF&� (�(X�(�)�`*J*9*�"-!R1`1�1HO1��5,]=�@V�A��D�G�IH[uH�pK��N$N�U_*_�zb"hc�wg�Xh�rj�bk`k�ql(�lR p*q�Xr�BtǤvy�w�n RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 �n�8��"ajg�8 �� �v ����T��������%��Bx#��$kF&� (�(X�(�)�`*J*9*�"-!R1`1�1HO1��5,]=�@V�A��D�G�IH[uH�pK��N$N�U_*_�zb"hc�wg�Xh�rj�bk`k�ql(�lR p*q�Xr�7r�BtǤvy� RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect RegNtPreCreateKey
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe 䢰∖䥾ǝ RegNtPreCreateKey

Windows API Usage

Category API
Process Manipulation Evasion
  • NtUnmapViewOfSection
Process Shell Execute
  • ShellExecute
  • WriteConsole
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateMutant
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  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • 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!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!NtSetInformationWorkerFactory
  • 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
  • UNKNOWN
Anti Debug
  • IsDebuggerPresent
User Data Access
  • GetComputerName
  • GetUserObjectInformation
Process Terminate
  • TerminateProcess

Shell Command Execution

open reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v psdrv /t REG_SZ /d "C:\Users\Yovstylh\AppData\Roaming\Microsoft\DVX\ftshost.exe" /f
WriteConsole: The operation co
open C:\Users\Yovstylh\AppData\Roaming\Microsoft\DVX\ftshost.exe
open reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v ezfts /t REG_SZ /d "C:\Users\Yovstylh\AppData\Roaming\Microsoft\DVX\ftshost.exe" /f