Threat Database Trojans Trojan.DllInject.K

Trojan.DllInject.K

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 30
First Seen: May 17, 2021
Last Seen: March 24, 2026
OS(es) Affected: Windows

The detection of Trojan.DllInject.K indicates that your system has been compromised by a potentially malicious program. This type of threat is generally categorized as a Trojan, which is a broad term for malware that disguises itself as legitimate software. Trojans can have various functions, including data theft, unauthorized access, and disruption of system operations. It's essential to address this issue promptly to prevent further damage and protect your personal data.

What Is Trojan.DllInject.K?

Trojan.DllInject.K, as detected by your security software, suggests a type of malware that injects malicious code into legitimate system processes or applications, typically through dynamic link libraries (DLLs). This method allows the malware to hide its presence and evade detection by blending in with normal system activities. The name itself implies a specific technique used by the malware but does not necessarily indicate a well-known malware family without further context.

How Trojan.DllInject.K Operates

Trojan.DllInject.K, like other Trojans, operates by exploiting vulnerabilities in the system or application software to gain unauthorized access. Once inside, it can perform a variety of malicious activities, including but not limited to, stealing sensitive information, installing additional malware, or providing backdoor access to the attackers. The "DllInject" part of its name hints at its ability to inject malicious DLLs into running processes, which can lead to a range of malicious behaviors without being easily detected by traditional security measures.

Symptoms of Infection

Systems infected with Trojan.DllInject.K may exhibit a range of symptoms, though some infections may remain asymptomatic until significant damage is done. Common signs include unexpected system crashes, slow performance, unfamiliar programs or icons, unexpected changes in system settings, and increased network activity without a clear cause. Since the malware can hide within legitimate processes, identifying the infection solely based on symptoms can be challenging, making regular system scans with updated security software crucial.

How to Remove Trojan.DllInject.K

  1. Boot into Safe Mode with Networking: This will limit the malware's ability to interfere with the removal process while still allowing you to download necessary tools.
  2. Perform a Full Scan with a Reputable Tool: Utilize a trusted anti-malware program, such as SpyHunter, to scan your system thoroughly. Ensure the software is updated to recognize the latest threats.
  3. Uninstall Suspicious Programs: Remove any recently installed programs that you don't recognize or no longer need. Be cautious and only uninstall programs you are certain are safe to remove.
  4. Reset Your Browser: If your web browser (such as Chrome, Firefox, or Edge) has been affected, resetting it to its default settings can help remove malicious extensions or settings. Be aware that this will also remove your bookmarks, history, and other customizations, so back them up if necessary.
  5. Reboot and Re-scan: After completing the above steps, restart your system and perform another full scan to ensure that the malware has been completely removed.

Conclusion

Removing Trojan.DllInject.K requires careful and systematic steps to ensure that all components of the malware are eliminated from your system. It's also crucial to adopt preventive measures, such as keeping your operating system and software up to date, using strong antivirus software, avoiding suspicious downloads, and being cautious with email attachments and links. By taking these steps, you can significantly reduce the risk of future infections and protect your digital assets. Remember, vigilance and regular system maintenance are key to maintaining a secure computing environment.

Analysis Report

General information

Family Name: Trojan.DllInject.K
Signature status: No Signature

Known Samples

MD5: 9eb0ef4785ff1b8500ada7ca0348dbc2
SHA1: c5b6b4a0c92318c2f1cb627f431a1b1dcf7181c9
SHA256: E823945E6F832A52DC05F70515EC23B6350D5B37E1DBF94C1D6D6BCFC1ED45D1
File Size: 6.42 MB, 6417408 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 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
  • 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)

File Traits

  • dll
  • HighEntropy
  • imgui
  • JMC
  • x86

Block Information

Total Blocks: 4,289
Potentially Malicious Blocks: 1,717
Whitelisted Blocks: 1,773
Unknown Blocks: 799

Visual Map

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... Data truncated
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Windows API Usage

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
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  • 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!NtWriteFile
Process Manipulation Evasion
  • NtUnmapViewOfSection
Process Shell Execute
  • CreateProcess
Anti Debug
  • NtQuerySystemInformation

Shell Command Execution

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\c5b6b4a0c92318c2f1cb627f431a1b1dcf7181c9_0006417408.,LiQMAxHB

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