Trojan.Downloader.Gen.KF

The detection of Trojan.Downloader.Gen.KF 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 crashes, and unauthorized access to your personal information.

What Is Trojan.Downloader.Gen.KF?

Trojan.Downloader.Gen.KF 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, allowing it to evade detection and gain access to your system. 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.Gen.KF Operates

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

Symptoms of Infection

The symptoms of a Trojan.Downloader.Gen.KF 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 personal information 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 and keep your antivirus software up to date.

How to Remove Trojan.Downloader.Gen.KF

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 antivirus 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 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 run another full scan with your antivirus tool to ensure that the malware has been completely removed.

Conclusion

Removing Trojan.Downloader.Gen.KF from your system requires careful attention to detail and a comprehensive approach to malware removal. By following the steps outlined above and staying vigilant, you can help protect your system and personal information from this and other types of malware. Remember to always keep your antivirus software up to date, avoid downloading suspicious files or programs, and be cautious when clicking on links or opening email attachments from unknown sources.

Analysis Report

General information

Family Name:	Trojan.Downloader.Gen.KF
Signature status:	Hash Mismatch

Known Samples

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Known Samples

This section lists other file samples believed to be associated with this family.

MD5: 53f0238355e1dcefc1eefb462c5c9199 SHA1: 28692b1a9f63373803908a3ec3cc8108c949b286 SHA256: ED5D6906DA49AF208667D2E6076E1FD7D6BBF4B74C89B73E7E244EC7D51565CB File Size: 1.27 MB, 1270184 bytes

MD5: 6609befc55de4b33d35c78629bd736a4 SHA1: 9dcff59000a0458f0d0a25c80d346c7e8d8c6a13 SHA256: 17C51DBAFE05B3EF1115F8144E810CAFBB920A594122888680A46D62E564AA10 File Size: 1.27 MB, 1270184 bytes

MD5: 2d94ffe45c1e16160aefa8fda976f706 SHA1: 60dbdd61b2270ad3fea93156913cb664d44963cb SHA256: ECB1A2AD0943153D7CD4421535E6F36AF34D8C5B3485316D6691D61DEF3EF53B File Size: 5.66 MB, 5656784 bytes

MD5: 81c91a1ff9e3f864d693ddde686df39a SHA1: f03a763741f646b0859411a8f6dc380ccc0c5d1a SHA256: BBC2A9760C849A2B364D8B9834A7EB29F8BA2F297FFE35693AE8A938FCE9AACC File Size: 1.27 MB, 1270184 bytes

MD5: 3fcde927f3ac6f4f977b5ff20a811b94 SHA1: 20b1a99f1b45bc20456d157d3b6d7a5b23edb3c8 SHA256: 92EABA736DB26802DFFB30C1A2FCBD8B26E065CCB42E07F7210E9D429682501D File Size: 52.62 KB, 52616 bytes

Windows Portable Executable Attributes

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Windows Portable Executable Attributes

This section lists file attributes found within family samples. These attributes are extracted from the files’ Windows PE (Portable Executable) specification and various system flags. Portable Executable Attributes give malware researchers insight into a file’s functionality, executable details, platform and runtime environment.

• 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 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)

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• 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 Icons

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File Icons

This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.

Windows PE Version Information

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Windows PE Version Information

This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.

Name	Value
Comments	This installation was built with Inno Setup.
Company Name	Microsoft Corporation Nuance Communications, Inc.
File Description	FeatureSwitch Guildhall Setup Microsoft Instrumentation Engine
File Version	15.1.0.2022032203 14.5.15069.1503 2.7.0.0
Internal Name	FEATURESWITCH MicrosoftInstrumentationEngine_x86
Legal Copyright	(c) 1995-2015, Nuance Communications, Inc. © Microsoft Corporation. All rights reserved.
Legal Trademarks	Microsoft® is a registered trademark of Microsoft Corporation. Nuance, ScanSoft, Recognita, OmniPage, PaperPort, Power PDF, and OmniPage Capture SDK are registered trademarks of Nuance Communications, Inc. in the United States and/or other countries.
Original Filename	FEATURESWITCH.DLL MicrosoftInstrumentationEngine_x86.dll
Product Name	Guildhall Microsoft® Visual Studio® PaperPort
Product Version	15.1.0.2022032203 14.5 8.5

Digital Signatures

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Digital Signatures

This section lists digital signatures that are attached to samples within this family. When analyzing and verifying digital signatures, it is important to confirm that the signature’s root authority is a well-known and trustworthy entity and that the status of the signature is good. Malware is often signed with non-trustworthy “Self Signed” digital signatures (which can be easily created by a malware author with no verification). Malware may also be signed by legitimate signatures that have an invalid status, and by signatures from questionable root authorities with fake or misleading “Signer” names.

Signer	Root	Status
Nuance Communications, Inc.	Go Daddy Secure Certification Authority	Hash Mismatch
Microsoft Corporation	Microsoft Code Signing PCA 2011	Hash Mismatch

File Traits

• dll
• x86

Block Information

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Block Information

During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.

Total Blocks:	195
Potentially Malicious Blocks:	10
Whitelisted Blocks:	185
Unknown Blocks:	0

Visual Map

x 0 0 x x 2 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 2 3 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 x x x x x x x 2 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 2 2 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 2

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

Similar Families

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Similar Families

This section lists other families that share similarities with this family, based on EnigmaSoft’s analysis. Many malware families are created from the same malware toolkits and use the same packing and encryption techniques but uniquely extend functionality. Similar families may also share source code, attributes, icons, subcomponents, compromised and/or invalid digital signatures, and network characteristics. Researchers leverage these similarities to rapidly and effectively triage file samples and extend malware detection rules.

• Trojan.Downloader.Gen.KF

Files Modified

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Files Modified

This section lists files that were created, modified, moved and/or deleted by samples in this family. File system activity can provide valuable insight into how malware functions on the operating system.

File	Attributes
c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.1.regtrans-ms	Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.2.regtrans-ms	Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\temp\is-lkjrs.tmp\60dbdd61b2270ad3fea93156913cb664d44963cb_0005656784.tmp	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\is-ofce6.tmp\_isetup\_setup64.tmp	Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\temp\is-ofce6.tmp\heap_master.ini	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\is-ofce6.tmp\kvpvbsext.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\is-ofce6.tmp\microsoftinstrumentationengine.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\is-ofce6.tmp\msvcp_win.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\is-ofce6.tmp\sched.meta	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\is-ofce6.tmp\ucrtbase.dll	Generic Write,Read Attributes

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c:\users\user\appdata\local\temp\is-ofce6.tmp\works_iron.exe

Generic Write,Read Attributes

Windows API Usage

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Windows API Usage

This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.

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 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
User Data Access	GetUserObjectInformation

Shell Command Execution

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Shell Command Execution

This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\28692b1a9f63373803908a3ec3cc8108c949b286_0001270184.,LiQMAxHB

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\9dcff59000a0458f0d0a25c80d346c7e8d8c6a13_0001270184.,LiQMAxHB

"C:\Users\Ggyjwujy\AppData\Local\Temp\is-LKJRS.tmp\60dbdd61b2270ad3fea93156913cb664d44963cb_0005656784.tmp" /SL5="$12039E,5269047,121344,c:\users\user\downloads\60dbdd61b2270ad3fea93156913cb664d44963cb_0005656784"

"C:\Users\Ggyjwujy\AppData\Local\Temp\is-OFCE6.tmp\Works_Iron.exe"

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\f03a763741f646b0859411a8f6dc380ccc0c5d1a_0001270184.,LiQMAxHB

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C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\20b1a99f1b45bc20456d157d3b6d7a5b23edb3c8_0000052616.,LiQMAxHB