PUP.KeyViewer

The detection of PUP.KeyViewer on your system indicates the presence of a potentially unwanted program (PUP) that may be compromising your computer's security and performance. PUPs are software applications that, while not necessarily malicious, can still cause significant disruptions and pose risks to your personal data and system integrity. Understanding what PUP.KeyViewer is, how it operates, and the symptoms it causes is crucial for effective removal and prevention of future infections.

What Is PUP.KeyViewer?

PUP.KeyViewer is categorized as a potentially unwanted program, which means it is not classified as malware in the traditional sense but can still exhibit undesirable behavior. PUPs often find their way onto systems through bundled software downloads, where they are included alongside legitimate applications without the user's full knowledge or consent. Once installed, PUP.KeyViewer may perform a variety of actions that are not in the best interest of the user, such as displaying unwanted advertisements, collecting user data, or modifying system settings.

How PUP.KeyViewer Operates

The operation of PUP.KeyViewer typically involves integrating itself into the system in a way that makes it difficult to detect and remove. It may install additional components or modify system files to ensure its persistence. PUPs like PUP.KeyViewer often have the capability to communicate with remote servers, from which they can receive updates, send collected data, or download additional unwanted software. This communication can lead to further system compromises and increased risk of malware infections.

Symptoms of Infection

Systems infected with PUP.KeyViewer may exhibit a range of symptoms, including but not limited to, an increase in unwanted pop-ups or advertisements, unexpected changes in browser settings or homepage, slowdowns in system performance, and the presence of unfamiliar programs or toolbars. Users may also notice that their browsing data is being collected or that they are being redirected to unwanted websites. These symptoms can significantly disrupt the user experience and pose security risks.

How to Remove PUP.KeyViewer

1. Boot your computer in Safe Mode with Networking to prevent PUP.KeyViewer from loading and to give you internet access for downloading removal tools.
2. Download and install a reputable anti-malware tool, such as SpyHunter, which is capable of detecting and removing PUPs and other types of malware. Perform a full scan of your system to identify all components of PUP.KeyViewer.
3. Uninstall any suspicious programs that were installed around the time you noticed the infection. Be cautious and only uninstall programs that you are certain are not needed.
4. Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any changes made by PUP.KeyViewer, such as altered homepages or search engines.
5. Reboot your computer and perform another scan with your anti-malware tool to ensure that all components of PUP.KeyViewer have been removed. This step is crucial for verifying the effectiveness of the removal process.

Conclusion

Removing PUP.KeyViewer from your system requires a thorough approach to ensure all its components are eliminated. By following the steps outlined above and maintaining good computing practices, such as regularly updating your operating system and applications, using strong antivirus software, and being cautious with downloads and email attachments, you can protect your system from PUPs and other types of malware. Remember, prevention is key, and staying informed about the latest threats and best practices for computer security is essential for safeguarding your digital life.

Analysis Report

General information

Family Name:	PUP.KeyViewer
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: dde142fbeb37c54679a0ea122a2011e4 SHA1: b7f8dfe6caa5d7f2e364cc66ad109a8c514e9c59 File Size: 51.16 KB, 51164 bytes

MD5: 5dacea3525718bbc1159b40b06831a13 SHA1: 0f01da459f776de9b9ac8e3acf6af335946d72a3 SHA256: 8B3AAFD9196A074EEE355D394BFFC84033762D5402F7048E49FA6B17CFC61F60 File Size: 26.11 KB, 26112 bytes

MD5: bdb00015b4bc13da57874cd499afff51 SHA1: 3054892b7d5d652a24b3818cfe90e07f96022368 SHA256: 914121E504FE31A8C19D925B570BA832AB3C429B120ECDFB9F0245E58AAE1A21 File Size: 51.16 KB, 51164 bytes

MD5: 48ec9aecff5ab939ea57ae69f264ad2f SHA1: 4962bd97bb420df17a99c2ed62087739472873df SHA256: C0FC2F52126BE2CC24E1C8556C835A8D538E5B1BC8D3806395801AED3A7BA7AE File Size: 50.85 KB, 50848 bytes

MD5: 7f597fd0a7bf2e961be2705986698a32 SHA1: 7af9b7786337d34598fdb7912362e5c3d40cd5d8 SHA256: 280E8D82B7E4A7ED044968604756DDB939B81832A6FA176277844437133F90C8 File Size: 50.85 KB, 50848 bytes

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MD5: 344709a2f2fd788236f1f5ffa997cd46 SHA1: 8cbbbf4973f7b7e22620148d898c060280512080 SHA256: 59E23515978DD7DF6FFA6175F2D37251E44EA671FE7FC431540F30DD9450DDCF File Size: 48.85 KB, 48848 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

• Installer Manifest
• nosig nsis
• No Version Info
• Nullsoft Installer
• 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:	75
Potentially Malicious Blocks:	0
Whitelisted Blocks:	75
Unknown Blocks:	0

Visual Map

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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

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.

• Agent.MH
• Agent.MI
• Agent.MU
• Autorun.LA
• Chapak.HBBB

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• FakeAV.AU
• Makoob.A
• Parite.F
• Trojan.Downloader.Gen.BQ

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\nsb256e.tmp	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsb256e.tmp\system.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsb256e.tmp\system.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsgf481.tmp	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsgf481.tmp\system.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsgf481.tmp\system.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsl255d.tmp	Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete
c:\users\user\appdata\local\temp\nsp2d4d.tmp	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsp2d4d.tmp\system.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsp2d4d.tmp\system.dll	Synchronize,Write Attributes

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c:\users\user\appdata\local\temp\nsp5769.tmp	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsp5769.tmp\system.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsp5769.tmp\system.dll	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsqf470.tmp	Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete
c:\users\user\appdata\local\temp\nsze9d4.tmp	Synchronize,Write Attributes
c:\users\user\appdata\local\temp\nsze9d4.tmp\system.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsze9d4.tmp\system.dll	Synchronize,Write Attributes

Registry Modifications

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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\software\wow6432node\microsoft\windows nt\currentversion\softwareprotectionplatform\activation::manual		RegNtPreCreateKey
HKLM\system\controlset001\control\session manager::pendingfilerenameoperations	\??\C:\Users\Dynbcegf\AppData\Local\Temp\nsp5769.tmp\	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475	S� ? xy#kP~�ރ#��� ��^#۴� c}��Vs}�kP~0�)����1  �� d���d#B FF e<��1� �� h�n� }#e�� #e��	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75	�N  �r� i  � �* ��� �8 \x� �B +� �� �6 �}�� �� 7� xy �� �� ۀ  > �= �����B�O���� �x�% ���8 �5���� Bx������\�! I N�sb �! > !wz#@�#�� #�O $kF $��$¨%:�%f�%�	RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass		RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname		RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet		RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect		RegNtPreCreateKey
HKLM\system\controlset001\control\session manager::pendingfilerenameoperations	*1\??\C:\Windows\SystemTemp\MicrosoftEdgeUpdate.exe.old5af52*1\??\C:\Windows\SystemTemp\CopilotUpdate.exe.old5af62*1\??\C:\P	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475	闩 ȁ 獖}	RegNtPreCreateKey

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HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75	k - �vT�����(�(X�*J1�1HO@V�A��G�IH[uH�p^�� _�zh�rk�qq�Xvy�{b��P��jI �������6����.���j���* �[�m�ƾB �]��IVӂa����$ �Ac�8წ���&M�^� �=�S.SL B1_T�Vw�`�V ��3 ��%�������A	RegNtPreCreateKey
HKLM\system\controlset001\control\session manager::pendingfilerenameoperations	*1\??\C:\Windows\SystemTemp\MicrosoftEdgeUpdate.exe.old122e4*1\??\C:\Windows\SystemTemp\CopilotUpdate.exe.old12352*1\??\C:\P	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475	��   xy* �/��Y�d�� ��ރ�p��^�o� [Vs}kP~��11��7 ���ﺃee����1�� h �n� ie�� r[� v	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75	l �8�tX�jg�8 �6 �v�Z xy ��T���������5����Bx!wz#�#�� $kF %:�%`�&� (�(X�)E )�`*J*9 +�[,��-!R/9�/��1`1�1HO1�D5�09ߔ<.:>3�@V�F?G�IH[uH�pH��I��J��K��N$ R20U_* V �X�	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475	鳼 ȁ ਪˣ 鈯ˣ 遙̃ 豤̃ অˣ 炑̃龡^ 濖̃ 賬̃ 攘ť獖}偫~엦1 ਷ˣ 邯̃ 뫯ʃeꙥžဈ엦18¶ f ꙥž i5ꙥž r/֢ vꙥž	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75	�m _jg �� �v ��T������% ��Bx�< #�� (�(X�(� )�`*J*9 *�" -!R1�1HO5,]@V�A��G�IH[uH�pN$ N�^�� _�zb"hc�wh�rj�bk`k�ql(�lR q�Xr�B sU�vy�w�ny�9{b�~D �P��� ��� ��7 �M�b: ���������6��	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475	鴅 ȁ 獖}偫~엦1eꙥž¶ iꙥž r֢ v ꙥž	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75	�m UtX �� �v�ZT�����Bx�< #�� &� (�(X�*J*9 *�" 1`1�1HO=�@V�A��G�IH[uH�pN$ N�Z^�^�� _�zb"hc�wj�bk`k�qk�8l(�lR q�Xr�B tǤw�n{b��P��� ��! ��� ��7 ����3 �M�b: �����������O���.��	RegNtPreCreateKey

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 Shell Execute	CreateProcess
User Data Access	GetUserObjectInformation
Anti Debug	NtQuerySystemInformation

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\Dynbcegf\AppData\Local\Temp\gkey.exe

C:\Users\Fbdifovb\AppData\Local\Temp\gkey.exe

C:\Users\Ndmqahzf\AppData\Local\Temp\gkey.exe

C:\Users\Nzasdrra\AppData\Local\Temp\gkey.exe

C:\Users\Nxhvyrvb\AppData\Local\Temp\gkey.exe