Trojan.Nimda.D

The detection of Trojan.Nimda.D on your system indicates a potential security threat that requires immediate attention. This report provides an overview of the threat, its operating mechanisms, symptoms of infection, and step-by-step guidance on how to remove it from your computer.

What Is Trojan.Nimda.D?

Trojan.Nimda.D is a type of malware that can compromise the security and integrity of your computer system. The term "Trojan" refers to a class of malware that disguises itself as legitimate software, allowing it to bypass security measures and gain unauthorized access to a system. Once inside, it can cause a variety of problems, including data theft, system crashes, and the installation of additional malware.

How Trojan.Nimda.D Operates

Malware like Trojan.Nimda.D typically operates by exploiting vulnerabilities in software or tricking users into installing it. Once installed, it can communicate with its creators, allowing them to control the infected system remotely. This can lead to a range of malicious activities, including the theft of personal data, the use of the system for spamming or as part of a botnet, and the installation of additional malware or viruses.

The exact mechanisms of Trojan.Nimda.D may vary, but its primary goal is to remain hidden while it carries out its malicious activities. It may use various techniques to evade detection, including disguising itself as a legitimate process or file, and interfering with security software to prevent its removal.

Symptoms of Infection

Identifying a Trojan.Nimda.D infection can be challenging, as it is designed to operate stealthily. However, there are several symptoms that may indicate the presence of malware on your system. These can include unexpected changes to your system settings, unfamiliar programs or icons, slow system performance, frequent crashes, and unusual network activity. If you suspect that your system is infected, it is crucial to take immediate action to remove the threat.

How to Remove Trojan.Nimda.D

1. Boot your computer in Safe Mode with Networking. This will help prevent the malware from loading and make it easier to remove.
2. Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. This can help identify and remove all components of the Trojan.Nimda.D malware.
3. Uninstall any suspicious programs that you do not recognize or that were installed without your knowledge. Be cautious, as some malware may disguise itself as legitimate software.
4. Reset your web browsers (such as Chrome, Firefox, or Edge) to their default settings. This can help remove any malicious extensions or settings that the malware may have installed.
5. Reboot your system and perform another full scan with your anti-malware tool to ensure that all remnants of the malware have been removed.

Conclusion

Removing Trojan.Nimda.D from your system requires careful attention to detail and the use of reputable security tools. By following the steps outlined in this report, you can help ensure the complete removal of the malware and prevent future infections. It is also important to maintain good security practices, including 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.

Remember, the key to protecting your system from malware like Trojan.Nimda.D is vigilance and proactive security measures. Stay informed, use reputable security software, and always be cautious when interacting with unknown or untrusted sources on the internet.

Analysis Report

General information

Family Name:	Trojan.Nimda.D
Signature status:	No Signature

Known Samples

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Known Samples

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

MD5: 6f725d6ce8d41d1f84adfda61615dc02 SHA1: e3eef0dbaff577c7df5eb7c0be1fc4ebe8720d0d SHA256: B377052D1DB087503707D870B745ED5C87014EDE72E2A6A38B2724C295894B63 File Size: 162.42 KB, 162422 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 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

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• 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.

File Traits

• big overlay
• No Version Info
• 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:	29
Potentially Malicious Blocks:	8
Whitelisted Blocks:	21
Unknown Blocks:	0

Visual Map

0 0 0 0 x 0 x x 0 0 x 0 0 0 0 0 0 0 0 x 0 x x 0 0 0 0 0 x

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.

• Nimda.C
• Nimda.D

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\temp\amx20e7.mid	Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\temp\tmp1ffe.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
Process Manipulation Evasion	NtUnmapViewOfSection
Process Shell Execute	CreateProcess

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:\Users\Yrfrdvdi\AppData\Local\Temp\TMP1FFE.exe