Autorun.PL
Posted: December 9, 2010
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: | 70 |
First Seen: | December 9, 2010 |
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Last Seen: | May 5, 2020 |
OS(es) Affected: | Windows |
Autorun.PL (Worm:Win32/Autorun.PL) is a worm that circulates by adding copies of itself onto removable drives. Autorun.PL also makes changes to the system file 'explorer.exe'. Autorun.PL runs the modified system file 'explorer.exe' every time Windows starts. By replacing the system file with its own copy, Autorun.PL makes sure that it is launched whenever Windows is started. Once installed and executed, Worm:Win32/Autorun.PL makes system changes by dropping potentially malicious files. Worm:Win32/Autorun.PL also makes registry modifications on the compromised PC. Autorun.PL also drops an 'autorun.inf' file in the root directory of removable drives. Such 'autorun.inf' files include instructions for the operating system so that when the removable drive is accessed from another computer, which supports the Autorun feature, Autorun.PL is executed automatically.
Aliases
More aliases (58)
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:64443354333d33c23d12c73ada654b34
File name: 64443354333d33c23d12c73ada654b34Size: 83.48 KB (83485 bytes)
MD5: 64443354333d33c23d12c73ada654b34
Detection count: 92
Group: Malware file
Last Updated: January 28, 2013
392be78a1079a6381849e16c918b3cd7
File name: 392be78a1079a6381849e16c918b3cd7Size: 84.67 KB (84672 bytes)
MD5: 392be78a1079a6381849e16c918b3cd7
Detection count: 84
Group: Malware file
Last Updated: January 28, 2013
ede59f72d4f25cbaead4ba0557a45bb6
File name: ede59f72d4f25cbaead4ba0557a45bb6Size: 84.94 KB (84948 bytes)
MD5: ede59f72d4f25cbaead4ba0557a45bb6
Detection count: 76
Group: Malware file
Last Updated: January 28, 2013
C:\$Recycle.Bin\S-1-5-21-1690734013-1579943970-3066372542-1000\$RMCBLL6.exe
File name: $RMCBLL6.exeSize: 404.48 KB (404480 bytes)
MD5: 301c7b99399cf81c4ebf6ff04242779f
Detection count: 33
File type: Executable File
Mime Type: unknown/exe
Path: C:\$Recycle.Bin\S-1-5-21-1690734013-1579943970-3066372542-1000\$RMCBLL6.exe
Group: Malware file
Last Updated: August 7, 2022
%WINDIR%\Explorer.exe
File name: Explorer.exeSize: 4.26 MB (4269294 bytes)
MD5: 17b28c4dec61a4a22ceb01245edf02a9
Detection count: 7
File type: Executable File
Mime Type: unknown/exe
Path: %WINDIR%
Group: Malware file
Last Updated: December 9, 2010
%windir%\explorer.exe[15 RANDOM DIGITS]
File name: %windir%\explorer.exe[15 RANDOM DIGITS]Mime Type: unknown/exe[15 RANDOM DIGITS]
Group: Malware file
<system folder>\sysanalysis.exe
File name: <system folder>\sysanalysis.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
<system folder>\services.exe
File name: <system folder>\services.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
<system folder>\explorer.exe[15 RANDOM DIGITS]
File name: <system folder>\explorer.exe[15 RANDOM DIGITS]Mime Type: unknown/exe[15 RANDOM DIGITS]
Group: Malware file
[Chinese characters].exe
File name: [Chinese characters].exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
Mourn_Operator.exe
File name: Mourn_Operator.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
Registry Modifications
HKEY..\..\{Value}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL "ShowSuperHidden" = "0"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced "ShowSuperHidden" = "0"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\HideFileExt "CheckedValue" = "0"HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer "NoFolderOptions" = "1"
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