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Backdoor.Mustela

Posted: June 4, 2016

Threat Metric

Threat Level: 6/10
Infected PCs: 1,281
First Seen: June 4, 2016
Last Seen: March 31, 2022
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:



%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\checkupdate.exe File name: checkupdate.exe
Size: 47.78 KB (47787 bytes)
MD5: be6d810c1142779a035e5e1433f229b5
Detection count: 949
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup
Group: Malware file
Last Updated: June 4, 2016
%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\checkupdate.exe File name: checkupdate.exe
Size: 48.64 KB (48640 bytes)
MD5: 6c105e90aa5ea7e08a739984f3061a76
Detection count: 73
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup
Group: Malware file
Last Updated: June 4, 2016
%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\checkupdate.exe File name: checkupdate.exe
Size: 29.69 KB (29696 bytes)
MD5: 721f018a2a887123ede7ab72adef110a
Detection count: 21
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup
Group: Malware file
Last Updated: June 4, 2016
%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\checkupdate.exe File name: checkupdate.exe
Size: 49.66 KB (49664 bytes)
MD5: c96787c7eb9bd3d0fd085676292c4059
Detection count: 19
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup
Group: Malware file
Last Updated: June 4, 2016
%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\checkupdate.exe File name: checkupdate.exe
Size: 109.05 KB (109056 bytes)
MD5: f451dceae8de4a36ac3b7644f11982b4
Detection count: 16
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup
Group: Malware file
Last Updated: June 4, 2016
%USERPROFILE%\Start Menu\Programs\Startup\checkupdate.exe File name: checkupdate.exe
Size: 112.49 KB (112490 bytes)
MD5: 1a4140dad6a3737423017442c6050ff1
Detection count: 15
File type: Executable File
Mime Type: unknown/exe
Path: %USERPROFILE%\Start Menu\Programs\Startup
Group: Malware file
Last Updated: June 4, 2016
%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\checkupdate.exe File name: checkupdate.exe
Size: 53.24 KB (53248 bytes)
MD5: 537f281aeef0593c774dbbc87d48819a
Detection count: 14
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup
Group: Malware file
Last Updated: June 4, 2016
%SystemDrive%\Users\<username>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\checkupdate.exe File name: checkupdate.exe
Size: 85.5 KB (85504 bytes)
MD5: 2f54d9a94d399ab181be4aae91bafd2c
Detection count: 12
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Users\<username>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
Group: Malware file
Last Updated: June 4, 2016
%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\checkupdate.exe File name: checkupdate.exe
Size: 113.08 KB (113088 bytes)
MD5: a2aed662d709ae1d5ed759e7813e4f01
Detection count: 9
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup
Group: Malware file
Last Updated: June 4, 2016
%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\checkupdate.exe File name: checkupdate.exe
Size: 98.19 KB (98195 bytes)
MD5: d3ba20df1a9e85e1db41835d30f50c40
Detection count: 5
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup
Group: Malware file
Last Updated: June 4, 2016
%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\checkupdate.exe File name: checkupdate.exe
Size: 122.88 KB (122880 bytes)
MD5: 51d7a732dbe9d526d29f7f7277b30172
Detection count: 5
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup
Group: Malware file
Last Updated: June 4, 2016
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