Threat Database Trojans Trojan.Downloader.Agent.TFA

Trojan.Downloader.Agent.TFA

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 0
First Seen: May 3, 2023
OS(es) Affected: Windows

The detection of Trojan.Downloader.Agent.TFA 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. It is essential to take immediate action to remove the threat and prevent further damage.

What Is Trojan.Downloader.Agent.TFA?

Trojan.Downloader.Agent.TFA 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 legitimate software, allowing it to bypass security measures and gain access to your system. The "Downloader" part of the name indicates that this malware is capable of downloading additional software, which can include other types of malware, such as viruses, spyware, and adware.

How Trojan.Downloader.Agent.TFA Operates

Trojan.Downloader.Agent.TFA operates by exploiting vulnerabilities in your system or tricking you into 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 sensitive information, such as passwords and credit card numbers.

Symptoms of Infection

The symptoms of a Trojan.Downloader.Agent.TFA infection can vary, but common signs include slow system performance, unexpected pop-ups and ads, and unfamiliar programs or icons on your desktop. You may also notice that your system is crashing or freezing frequently, or that your browser is being redirected to unfamiliar websites. In some cases, you may not notice any symptoms at all, which is why it is essential to regularly scan your system for malware.

  • Slow system performance
  • Unexpected pop-ups and ads
  • Unfamiliar programs or icons on your desktop
  • System crashes or freezes
  • Browser redirection

How to Remove Trojan.Downloader.Agent.TFA

  1. Boot your system 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 of your system to detect and remove the malware.
  3. Uninstall any suspicious programs or applications that you do not recognize or that were installed around the time of the infection.
  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 run another scan with your anti-malware tool to ensure that the malware has been completely removed.

Conclusion

Removing Trojan.Downloader.Agent.TFA from your system requires immediate attention and careful action. By following the steps outlined above, you can help to ensure that the malware is completely removed and that your system is protected from future infections. It is also essential to take steps to prevent future infections, such as keeping your operating system and software up to date, using strong passwords, and being cautious when opening email attachments or downloading software from the internet. By taking these precautions, you can help to protect your system and your sensitive information from malware and other online threats.

Analysis Report

General information

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

Known Samples

MD5: 2b776aed49e20cd5a45707fc186c4544
SHA1: b858a8d13bea20ad97c621395313c45b3e196b19
SHA256: 281B17332F7453B4521E13BE5C986690441D276659488197555B7BEE78F5ED70
File Size: 26.11 KB, 26112 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have security information
  • File is 64-bit executable
  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI application
  • 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

  • No Version Info
  • WriteProcessMemory
  • x64

Block Information

Total Blocks: 89
Potentially Malicious Blocks: 8
Whitelisted Blocks: 81
Unknown Blocks: 0

Visual Map

0 0 0 0 0 0 0 0 0 0 0 0 x x 0 x x x x 0 0 0 0 0 0 0 x 0 0 x 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 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

Registry Modifications

Key::Value Data API Name
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe ᓝ뺸脣ǜ RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer::slowcontextmenuentries `$�!�:i��+00��� Gs]XM���"�2��FXD�':D��exA-��LG=�A��J� �C� RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\explorer::slowcontextmenuentries `$�!�:i��+00��� Gs]XM���"�2��FXD�':D��exA-��LG=�A��J� �C� RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\5.0\cache\content::cacheprefix RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\5.0\cache\cookies::cacheprefix Cookie: RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\5.0\cache\history::cacheprefix Visited: RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 0k 8��8tXz��B�8 �� �6 �v z 5� �Z xy ����T�B�������������5����ee +��Bx�<5 � �!wz"Wc#�#��$kF$��%"�%:�%�&� &�x(�(X�)�`*J*9*�"*�^*�h+�[,��/9�/��0P% RegNtPreCreateKey

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAccessCheckByType
  • ntdll.dll!NtAddAtomEx
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcAcceptConnectPort
  • ntdll.dll!NtAlpcConnectPort
  • ntdll.dll!NtAlpcConnectPortEx
  • ntdll.dll!NtAlpcCreatePort
  • ntdll.dll!NtAlpcCreatePortSection
  • ntdll.dll!NtAlpcCreateSectionView
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  • ntdll.dll!NtAlpcCreateSecurityContext
  • ntdll.dll!NtAlpcQueryInformation
  • ntdll.dll!NtAlpcQueryInformationMessage
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtAlpcSetInformation
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtAssociateWaitCompletionPacket
  • ntdll.dll!NtCancelWaitCompletionPacket
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateKey
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
  • ntdll.dll!NtCreateThreadEx
  • ntdll.dll!NtCreateTimer
  • ntdll.dll!NtCreateWaitCompletionPacket
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtImpersonateAnonymousToken
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtNotifyChangeKey
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenThread
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtPowerInformation
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryEvent
  • ntdll.dll!NtQueryInformationFile
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryLicenseValue
  • ntdll.dll!NtQueryObject
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQuerySecurityObject
  • ntdll.dll!NtQuerySystemInformation
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReadRequestData
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationObject
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSetTimer2
  • ntdll.dll!NtSetTimerEx
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTerminateProcess
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtUpdateWnfStateData
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForMultipleObjects
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWorkerFactoryWorkerReady
  • ntdll.dll!NtWriteFile
  • UNKNOWN
User Data Access
  • GetUserName
Process Manipulation Evasion
  • NtUnmapViewOfSection

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