Threat Database Trojans Trojan.Lumma.C

Trojan.Lumma.C

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 16,599
Threat Level: 80 % (High)
Infected Computers: 66
First Seen: April 23, 2024
Last Seen: July 12, 2026
OS(es) Affected: Windows

The detection of Trojan.Lumma.C on your system indicates a potential security threat that requires immediate attention. Trojans are a type of malware designed to allow unauthorized access to a computer system, and they can lead to a range of problems, including data theft, system crashes, and the installation of additional malware. Understanding what Trojan.Lumma.C is and how it operates is crucial for taking the appropriate steps to remove it and protect your system.

What Is Trojan.Lumma.C?

Trojan.Lumma.C, as indicated by its name, falls under the category of Trojan horses. Trojans are malicious programs that disguise themselves as legitimate software but actually allow an attacker to access your system remotely. They can be distributed through various means, including email attachments, downloadable files from the internet, and infected software. Once installed, a Trojan can perform a variety of malicious functions, depending on its design and the intentions of its creators.

How Trojan.Lumma.C Operates

The operation of Trojan.Lumma.C, like other Trojans, involves creating a backdoor on the infected computer. This backdoor allows hackers to remotely access and control the system, potentially leading to the theft of sensitive information, such as passwords, credit card numbers, and personal data. Trojans can also be used to install additional malware, such as spyware, adware, and ransomware, further compromising the security and performance of the infected system. The specific actions of Trojan.Lumma.C can vary, but its primary goal is to provide unauthorized access to your computer.

Symptoms of Infection

Identifying a Trojan infection can be challenging because these malware types are designed to operate stealthily. However, there are several symptoms that may indicate the presence of Trojan.Lumma.C or similar malware on your system. These include unusual system behavior, such as unexpected crashes or slowdowns, unfamiliar programs or icons appearing on your desktop, and increased network activity without apparent cause. Additionally, you might notice that your antivirus software is disabled or that you are receiving unusual pop-ups or alerts. If you suspect that your system is infected, it's essential to take immediate action to remove the threat.

How to Remove Trojan.Lumma.C

  1. Boot your computer in Safe Mode with Networking. This will help prevent the malware from loading and give you a cleaner environment to work in.
  2. Download and install a reputable anti-malware tool, such as SpyHunter, which can detect and remove Trojan.Lumma.C and other malware.
  3. Use the anti-malware tool to perform a full scan of your system. This will help identify and remove all components of the Trojan.
  4. Manually uninstall any suspicious programs that you do not recognize or that were installed around the time you noticed the infection.
  5. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings. This can help remove any malicious extensions or settings that the Trojan may have installed.
  6. After completing the above steps, reboot your computer and perform another scan with your anti-malware tool to ensure that all threats have been removed.

Conclusion

Removing Trojan.Lumma.C from your system requires careful and thorough action to ensure that all components of the malware are eliminated. By following the steps outlined above and maintaining good security practices, such as regularly updating your antivirus software, avoiding suspicious downloads, and being cautious with email attachments, you can protect your system from future infections. Remember, prevention and prompt action are key to safeguarding your digital security and protecting your personal data from malicious threats like Trojan.Lumma.C.

Analysis Report

General information

Family Name: Trojan.Lumma.C
Signature status: No Signature

Known Samples

MD5: 5c155c6a36dce0c3fc56b42ed7656cee
SHA1: 027d6e9fbf164ae2ec1a8cb40ea4c3197065b087
SHA256: 80089DC219A9ADEA650981308A48CECDA3BB4D3A95BCDBC71E6A42BE7F89C0C6
File Size: 430.08 KB, 430080 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have resources
  • File doesn't have security information
  • File has exports table
  • 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
  • WriteProcessMemory
  • x86

Block Information

Total Blocks: 465
Potentially Malicious Blocks: 0
Whitelisted Blocks: 459
Unknown Blocks: 6

Visual Map

? ? ? ? ? ? 2 0 0 1 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 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 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 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 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 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 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 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 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 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 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 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 0 0 0 0 0 0 0 2 2 0 0 3 1 1 0 1 2 0
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

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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!NtWaitForSingleObject
  • 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\027d6e9fbf164ae2ec1a8cb40ea4c3197065b087_0000430080.,LiQMAxHB

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