Trojan.Darkshell
Posted: April 12, 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: | 8/10 |
|---|---|
| Infected PCs: | 91 |
| First Seen: | March 21, 2012 |
|---|---|
| OS(es) Affected: | Windows |
Trojan.Darkshell is a Trojan that may launch distributed denial of service (DDoS) attacks. Once installed, Trojan.Darkshell copies itself to the certain location. Trojan.Darkshell also drops a rootkit with the certain file name. The rootkit modifies the System Service Dispatch Table (SSDT) in order to cover Trojan.Darkshell. Trojan.Darkshell then creates the particular registry subkey to add itself as a system service. Trojan.Darkshell also creates several registry entries. Trojan.Darkshell connects to the certain domain to post a unique identifier of the corrupted PC system and downloads a list of website links. Trojan.Darkshell then launches a distributed denial-of-service attack on the website links given. Remove Trojan.Darkshell immediately after detection.
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:%System%\drivers\PCIDump.sys
File name: %System%\drivers\PCIDump.sysFile type: System file
Mime Type: unknown/sys
Group: Malware file
%System%\fkrekk[RANDOM NUMBERS].exe
File name: %System%\fkrekk[RANDOM NUMBERS].exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
Registry Modifications
HKEY..\..\{Value}HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Fkrkk[RANDOM NUMBERS]\"ErrorControl" = "0x00000000"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Fkrkk[RANDOM NUMBERS]\"ImagePath" = "%System%\fkrekk[RANDOM NUMBERS].exe"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Fkrkk[RANDOM NUMBERS]\"DisplayName" = "FkreFoxkk[RANDOM NUMBERS]"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Fkrkk[RANDOM NUMBERS]\"Description" = "FkreFoxkk Browser[RANDOM NUMBERS]"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Fkrkk[RANDOM NUMBERS]\"ObjectName" = "LocalSystem"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Fkrkk[RANDOM NUMBERS]\"Start" = "0x00000002"HKEY..\..\..\..{Subkeys}HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Fkrk[RANDOM NUMBERS]HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Fkrkk[RANDOM NUMBERS]\"Type"
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