Home Malware Programs Trojans Trojan:Win32/Crastic.gen!B

Trojan:Win32/Crastic.gen!B

Posted: July 3, 2013

Threat Metric

Threat Level: 9/10
Infected PCs: 3,951
First Seen: July 3, 2013
Last Seen: August 25, 2023
OS(es) Affected: Windows

Trojan:Win32/Crastic.gen!B is a Trojan that drops and installs another malware infections on the infected computer. Trojan:Win32/Crastic.gen!B can only run from removable drives. Trojan:Win32/Crastic.gen!B deletes restore points created by the Windows System Restore tool, making it difficult to restore the targeted computer to a pre-infected state. When installed on the corrupted PC, Trojan:Win32/Crastic.gen!B makes system changes by dropping potentially malicious files and making registry modifications. Trojan:Win32/Crastic.gen!B might include the file name %TEMP%\Adobe_Flash_Player_11.37.2743.ex, which indicates that it might pretend to be an Adobe Flash Player installer. The file might also be named 'autorun.exe' if it is found in removable drives. The file uses the default Windows folder icon. If the PC double-clicks on it, it opens the root folder of the drive in which it is located. It does this to strive to mislead the victim into thinking that it's a folder.

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:



%windir%\csrss.dll File name: %windir%\csrss.dll
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
%TEMP%\Adobe_Flash_Player_11.37.2743.exe File name: %TEMP%\Adobe_Flash_Player_11.37.2743.exe
File type: Executable File
Mime Type: unknown/exe
Group: Malware file

Registry Modifications

The following newly produced Registry Values are:

HKEY..\..\{Value}HKEY_LOCAL_MACHINEM\SYSTEM\CurrentControlSet\Services\Wcsrss "ImagePath" = "%SystemRoot%\system32\svchost.exe -k Wcsrss"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Wcsrss\Parameters "ServiceDll" = "%windir%\csrss.dll"
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