WORM_MORTO.SM
Posted: October 22, 2012
Threat Metric
The following fields listed on the Threat Meter containing a specific value, are explained in detail below:
Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.
Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.
Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.
Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.
% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.
Threat Level: | 5/10 |
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Infected PCs: | 567 |
First Seen: | October 22, 2012 |
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Last Seen: | December 14, 2021 |
OS(es) Affected: | Windows |
WORM_MORTO.SM is a worm, which uses Remote Desktop Protocol (RDP) to spread itself. WORM_MORTO.SM is distributed by other PC threats or dropped as a malicious file downloaded unknowingly by PC users when visiting malicious websites. WORM_MORTO.SM deletes the initially executed copy of itself. Once installed, WORM_MORTO.SM adds the potentially malicious files as copies of itself into the infected computer system. WORM_MORTO.SM inserts itself into the svchost.exe process in order to stay resident in computer memory. WORM_MORTO.SM modifies the Windows Registry by adding several registry entries. This worm deletes the initially executed copy of itself. This worm creates a backup copy of its dropped file as %Windows%\clb.dll.bak. The file %system%\clb.dll is a legitimate file which is used by regedit.exe. That is why the copy of this malware is placed in %Windows% directory is to trick regedit.exe that the dropped file is the component that it needs. Therefore, regedit.exe loads the malicious clb.dll into the system.
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:file.exe
File name: file.exeSize: 6.67 KB (6672 bytes)
MD5: 1e1b189c39c0d8d5fbd72f05eb1cceee
Detection count: 71
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: October 23, 2012
file.exe
File name: file.exeSize: 6.67 KB (6672 bytes)
MD5: d856249f4a33f6c88b7c70e7968b976b
Detection count: 70
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: October 23, 2012
file.exe
File name: file.exeSize: 6.67 KB (6672 bytes)
MD5: 9bf82a30dcbb45bfc39e978a00a5460c
Detection count: 69
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: October 23, 2012
%Windows%\Offline Web Pages\cache.txt
File name: %Windows%\Offline Web Pages\cache.txtMime Type: unknown/txt
Group: Malware file
%System%\Sens32.dll
File name: %System%\Sens32.dllFile type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
%Windows%\clb.dl
File name: %Windows%\clb.dlMime Type: unknown/dl
Group: Malware file
Registry Modifications
Regexp file mask%WINDIR%\offline web pages\cache.txt%WINDIR%\System32\wmicuclt%WINDIR%\System32\wmicuclt.exe%WINDIR%\SysWOW64\wmicuclt%WINDIR%\SysWOW64\wmicuclt.exe%WINDIR%\Temp\ntshrui.dllHKEY..\..\{Value}HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Windows NoPopUpsOnBoot = "1"HKEY_LOCAL_MACHINE\SYSTEM\WPA id = "1293D1C15VAVUJTN"HKEY_LOCAL_MACHINE\SYSTEM\WPA it = "{hex values}"HKEY_LOCAL_MACHINE\SYSTEM\WPA md = "{garbage code}"HKEY_LOCAL_MACHINE\SYSTEM\WPA ie = "%current folder%\{malware name}.exe"HKEY_LOCAL_MACHINE\SYSTEM\WPA sr = "Sens"HKEY_LOCAL_MACHINE\SYSTEM\WPA sn = "6to4"[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System] ConsentPromptBehaviorAdmin=0 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System] EnableLUA=0[HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers]
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