Home Possibly Unwanted Program PUP.Compatibility Verifier

PUP.Compatibility Verifier

Posted: January 22, 2015

Threat Metric

Ranking: 17,130
Threat Level: 1/10
Infected PCs: 41,701
First Seen: January 22, 2015
Last Seen: September 17, 2023
OS(es) Affected: Windows

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:



C:\Users\<username>\AppData\Roaming\Compatibility Verifier\compatibilitychecksvc.exe File name: compatibilitychecksvc.exe
Size: 99.49 KB (99496 bytes)
MD5: 7143b9e0809236e344fb469c14b9c5b0
Detection count: 5,420
File type: Executable File
Mime Type: unknown/exe
Path: C:\Users\<username>\AppData\Roaming\Compatibility Verifier\compatibilitychecksvc.exe
Group: Malware file
Last Updated: November 23, 2022
%APPDATA%\Compatibility Verifier\compatibilitycheck.exe File name: compatibilitycheck.exe
Size: 51.3 MB (51308712 bytes)
MD5: 2f1daa9c8700bf7911c79b064d098f2a
Detection count: 1,771
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Compatibility Verifier
Group: Malware file
Last Updated: July 28, 2022
%SystemDrive%\Users\<username>\AppData\Roaming\Compatibility Verifier\compatibilitycheck.exe File name: compatibilitycheck.exe
Size: 51.54 MB (51548328 bytes)
MD5: b653f1ae7ac977aed258e0aac59e9bd5
Detection count: 1,618
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Users\<username>\AppData\Roaming\Compatibility Verifier
Group: Malware file
Last Updated: October 7, 2022
%SystemDrive%\Users\<username>\AppData\Roaming\Compatibility Verifier\compatibilitycheck.exe File name: compatibilitycheck.exe
Size: 51.3 MB (51305640 bytes)
MD5: 6ea89d1de0a1ce2e4b9dee330ec6d969
Detection count: 792
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Users\<username>\AppData\Roaming\Compatibility Verifier
Group: Malware file
Last Updated: November 23, 2022
%WINDIR%\system32\Compatibility Verifier\compatibilitycheck.exe File name: compatibilitycheck.exe
Size: 51.3 MB (51309224 bytes)
MD5: d5b5534ba41ae369eaf20f76855cfa9a
Detection count: 719
File type: Executable File
Mime Type: unknown/exe
Path: %WINDIR%\system32\Compatibility Verifier
Group: Malware file
Last Updated: July 22, 2021
%APPDATA%\Compatibility Verifier\compatibilitychecksvc.exe File name: compatibilitychecksvc.exe
Size: 99.49 KB (99496 bytes)
MD5: 756d9a0f7b198f9a2fbd95fe0a9e448d
Detection count: 717
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Compatibility Verifier
Group: Malware file
Last Updated: December 21, 2020
%WINDIR%\TEMP\aaccee\aabbcc.exe File name: aabbcc.exe
Size: 33.12 MB (33128716 bytes)
MD5: 645c4c1fb69dee076489fc87b4fc6a71
Detection count: 431
File type: Executable File
Mime Type: unknown/exe
Path: %WINDIR%\TEMP\aaccee
Group: Malware file
Last Updated: March 8, 2021
%SystemDrive%\Users\<username>\AppData\Roaming\Compatibility Verifier\compatibilitycheck.exe File name: compatibilitycheck.exe
Size: 51.3 MB (51308200 bytes)
MD5: bf15b99fb10bca3526b160f28d668d8e
Detection count: 260
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Users\<username>\AppData\Roaming\Compatibility Verifier
Group: Malware file
Last Updated: February 7, 2020
%SystemDrive%\Users\<username>\AppData\Roaming\Compatibility Verifier\compatibilitycheck.exe File name: compatibilitycheck.exe
Size: 51.3 MB (51308712 bytes)
MD5: 4dfd8e1156eeef97f5261c697616ac63
Detection count: 244
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Users\<username>\AppData\Roaming\Compatibility Verifier
Group: Malware file
Last Updated: October 24, 2021
%SystemDrive%\Users\<username>\AppData\Roaming\Compatibility Verifier\compatibilitychecksvc.exe File name: compatibilitychecksvc.exe
Size: 86.01 KB (86016 bytes)
MD5: c9de8e4efdb5242039f2c0b544a05372
Detection count: 87
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Users\<username>\AppData\Roaming\Compatibility Verifier
Group: Malware file
Last Updated: March 24, 2016
%SystemDrive%\Documents and Settings\Default User\Application Data\Compatibility Verifier\compatibilitychecksvc.exe File name: compatibilitychecksvc.exe
Size: 86.01 KB (86016 bytes)
MD5: ac295a7857e6053ceb111c27811d0394
Detection count: 40
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Documents and Settings\Default User\Application Data\Compatibility Verifier
Group: Malware file
Last Updated: March 24, 2016
%APPDATA%\Compatibility Verifier\compatibilitycheck.exe File name: compatibilitycheck.exe
Size: 51.25 MB (51252392 bytes)
MD5: d27c1d6ca69405052b23e6a8e9fabe5a
Detection count: 32
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Compatibility Verifier
Group: Malware file
Last Updated: March 26, 2016
%APPDATA%\Compatibility Verifier\compatibilitychecksvc.exe File name: compatibilitychecksvc.exe
Size: 87.2 KB (87208 bytes)
MD5: b64a252fd259b1a3ca8f161c3bef5dc7
Detection count: 16
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Compatibility Verifier
Group: Malware file
Last Updated: March 24, 2016
%APPDATA%\Compatibility Verifier\compatibilitychecksvc.exe File name: compatibilitychecksvc.exe
Size: 106.15 KB (106152 bytes)
MD5: 7875494ac8fdf84824e6652e21ebb435
Detection count: 14
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Compatibility Verifier
Group: Malware file
Last Updated: March 24, 2016
%SystemDrive%\Documents and Settings\Default User\Dane aplikacji\Compatibility Verifier\compatibilitychecksvc.exe File name: compatibilitychecksvc.exe
Size: 91.3 KB (91304 bytes)
MD5: 8ce9d2e39ef9b574557db2c102c08538
Detection count: 12
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Documents and Settings\Default User\Dane aplikacji\Compatibility Verifier
Group: Malware file
Last Updated: March 24, 2016
%APPDATA%\Compatibility Verifier\compatibilitycheck.exe File name: compatibilitycheck.exe
Size: 51.54 MB (51544232 bytes)
MD5: 4926e366bee03d4b62633cb51b54165a
Detection count: 5
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Compatibility Verifier
Group: Malware file
Last Updated: March 26, 2016
C:\Users\<username>\AppData\Roaming\Compatibility Verifier\compatibilitychecksvc.exe File name: compatibilitychecksvc.exe
Size: 106.15 KB (106152 bytes)
MD5: 1da4678aaf7042acdfa574a24804c079
Detection count: 5
File type: Executable File
Mime Type: unknown/exe
Path: C:\Users\<username>\AppData\Roaming\Compatibility Verifier
Group: Malware file
Last Updated: March 24, 2016
%APPDATA%\Compatibility Verifier\compatibilitycheck.exe File name: compatibilitycheck.exe
Size: 31.91 KB (31912 bytes)
MD5: 06261bc7e92cf7459a7838a27eee594e
Detection count: 5
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Compatibility Verifier
Group: Malware file
Last Updated: March 26, 2016

More files

Registry Modifications

The following newly produced Registry Values are:

Regexp file mask%WINDIR%\TEMP\aaccee\aabbcc.exeHKEY..\..\..\..{RegistryKeys}SYSTEM\ControlSet001\services\Verifies and fixes application compatibility issuesSYSTEM\CurrentControlSet\services\Verifies and fixes application compatibility issues

Additional Information

The following directories were created:
%APPDATA%\Compatibility Verifier%WINDIR%\SysWOW64\Compatibility Verifier%WINDIR%\system32\Compatibility Verifier
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