Trojan.Downloader.Gen.KF
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Popularity Rank: | 15,980 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 8 |
| First Seen: | January 28, 2026 |
| Last Seen: | May 29, 2026 |
| OS(es) Affected: | Windows |
Table of Contents
Analysis Report
General information
| Family Name: | Trojan.Downloader.Gen.KF |
|---|---|
| Signature status: | No Signature |
Known Samples
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
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MD5:
6609befc55de4b33d35c78629bd736a4
SHA1:
9dcff59000a0458f0d0a25c80d346c7e8d8c6a13
SHA256:
17C51DBAFE05B3EF1115F8144E810CAFBB920A594122888680A46D62E564AA10
File Size:
1.27 MB, 1270184 bytes
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MD5:
2d94ffe45c1e16160aefa8fda976f706
SHA1:
60dbdd61b2270ad3fea93156913cb664d44963cb
SHA256:
ECB1A2AD0943153D7CD4421535E6F36AF34D8C5B3485316D6691D61DEF3EF53B
File Size:
5.66 MB, 5656784 bytes
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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 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
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
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 |
| File Description |
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| File Version |
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| Internal Name | MicrosoftInstrumentationEngine_x86 |
| Legal Copyright | © Microsoft Corporation. All rights reserved. |
| Legal Trademarks | Microsoft® is a registered trademark of Microsoft Corporation. |
| Original Filename | MicrosoftInstrumentationEngine_x86.dll |
| Product Name |
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| Product Version |
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Digital Signatures
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 |
|---|---|---|
| Microsoft Corporation | Microsoft Code Signing PCA 2011 | Hash Mismatch |
File Traits
- dll
- x86
Block Information
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.Similar Families
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.Files Modified
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
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 |
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| Process Manipulation Evasion |
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| Process Shell Execute |
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| Anti Debug |
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| User Data Access |
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Shell Command Execution
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
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C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\9dcff59000a0458f0d0a25c80d346c7e8d8c6a13_0001270184.,LiQMAxHB
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"C:\Users\Ggyjwujy\AppData\Local\Temp\is-LKJRS.tmp\60dbdd61b2270ad3fea93156913cb664d44963cb_0005656784.tmp" /SL5="$12039E,5269047,121344,c:\users\user\downloads\60dbdd61b2270ad3fea93156913cb664d44963cb_0005656784"
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"C:\Users\Ggyjwujy\AppData\Local\Temp\is-OFCE6.tmp\Works_Iron.exe"
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