PUP.Crypter.A
The detection of PUP.Crypter.A on your system indicates the presence of a potentially unwanted program (PUP) that may pose risks to your computer's security and performance. It's essential to understand the nature of this threat and take appropriate steps to remove it to prevent potential harm. In this report, we will provide an overview of PUP.Crypter.A, its operating methods, symptoms of infection, and a step-by-step guide on how to remove it from your system.
Table of Contents
What Is PUP.Crypter.A?
PUP.Crypter.A is classified as a potentially unwanted program, which means it is not necessarily malicious but can still cause issues with your computer's operation. PUPs are often installed unintentionally, alongside other software, and can lead to unwanted changes in browser settings, the display of annoying advertisements, or the collection of user data without consent. The term "Crypter" suggests that this PUP might involve some form of encryption or obfuscation, potentially complicating its detection and removal.
How PUP.Crypter.A Operates
PUPs like PUP.Crypter.A typically operate by integrating themselves into the system and altering settings to achieve their objectives, which could range from displaying advertisements to more invasive data collection practices. They might also attempt to protect themselves from being removed by creating multiple components or by integrating into system processes. Understanding how PUP.Crypter.A operates is crucial for effective removal, as simply deleting the visible components may not eradicate the threat entirely.
Symptoms of Infection
Systems infected with PUP.Crypter.A may exhibit a range of symptoms, including but not limited to, an increase in unwanted advertisements, changes in default browser settings, slow system performance, or the appearance of unfamiliar programs. Users might also notice that their browser homepage or search engine has been changed without their consent. These symptoms can significantly disrupt the user experience and pose security risks, making prompt action necessary.
How to Remove PUP.Crypter.A
- Enter Safe Mode with Networking: This will limit the PUP's ability to interfere with the removal process. Restart your computer and press the key to access the boot menu (this varies by manufacturer but is often F8, F12, or Del). Select Safe Mode with Networking.
- Conduct a Full Scan: Utilize a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. This will help identify all components of PUP.Crypter.A.
- Uninstall Suspicious Programs: Go through the list of installed programs on your computer and uninstall any that are unfamiliar or were installed around the time the symptoms began.
- Reset Browsers: For browsers like Chrome, Firefox, and Edge, reset them to their default settings. This will remove any changes made by PUP.Crypter.A, such as altered homepages or search engines.
- Reboot and Re-scan: After completing the above steps, restart your computer in normal mode and perform another scan with your anti-malware tool to ensure all components of PUP.Crypter.A have been removed.
Conclusion
Removing PUP.Crypter.A requires a systematic approach to ensure all its components are eradicated from the system. By following the steps outlined in this guide, users can effectively remove this potentially unwanted program and restore their system to a secure and stable state. It's also crucial to adopt preventive measures, such as being cautious during software installations and regularly scanning your system with reputable security software, to avoid future infections. Remember, vigilance and proactive security practices are key to protecting your digital environment.
Analysis Report
General information
| Family Name: | PUP.Crypter.A |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
b98557378dea2f6da910feff2a83651c
SHA1:
a2a081623cae1fb8f376221eb111b4224f94f640
SHA256:
C9BC1E38EFC74D053671694466C25FB7B36C3796345AB29812E691A291655B13
File Size:
65.45 KB, 65452 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 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
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 |
|---|---|
| Company Name | Linkular LLC |
| File Version | 1.0.0.1045 |
| Legal Copyright | Linkular LLC, 2012 |
| Product Name | PowerPack |
| Product Version | 1.0.0.1045 |
File Traits
- No Version Info
- x86
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 |
|---|---|
| \device\namedpipe | Generic Read,Write Attributes |
| \device\namedpipe | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nside96.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete |
| c:\users\user\appdata\local\temp\nsydea7.tmp\inetc.dll.out | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsydea7.tmp\inetc.dll.out0 | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsydea7.tmp\inetc.dll.out1 | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsydea7.tmp\mf.exe | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsydea7.tmp\nsexec.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsydea7.tmp\system.dll | Generic Write,Read Attributes |
Registry Modifications
Registry Modifications
This section lists registry keys and values that were created, modified and/or deleted by samples in this family. Windows Registry activity can provide valuable insight into malware functionality. Additionally, malware often creates registry values to allow itself to automatically start and indefinitely persist after an initial infection has compromised the system.| Key::Value | Data | API Name |
|---|---|---|
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 鶻⠝ǜ | RegNtPreCreateKey |
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 |
|---|---|
| Anti Debug |
|
| User Data Access |
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| Process Manipulation Evasion |
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| Process Shell Execute |
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| Syscall Use |
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61 additional items are not displayed above. |
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:\Users\Roexlnki\AppData\Local\Temp\nsyDEA7.tmp\mf.exe "C:\Users\Roexlnki\AppData\Local\Temp\nsyDEA7.tmp\inetc.dll"
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