Summary : New evidence for the lingering pattern of vulnerability, arrogance, and lack of responsibility at Microsoft. C onficker has been a colossal PR problem for Microsoft and security headache to its customers. For the uninitiated, here are some previous posts that we wrote about Conficker:. In fact, new variants of it are now appearing and Symantec has issued warnings.
For the latest details, see:. Until now. Symantec reports today that it has found a new variant of the virulent worm that will identify antivirus software or security analysis tools running on the infected PC, and attempt to shut down those programs. Conficker gets upgraded with defenses. Researchers at Symantec have discovered what could be a significant development in the ongoing Conficker worm saga: a new module that is being pushed out to some infected systems.
In a couple of ways, the new component is designed to harden infected machines against an industry consortium that is actively trying to contain the prolific worm. For one, the update targets antivirus software and security analysis tools to prevent them from removing the malware.
Not only does it try to disable anti-malware titles, it also goes after programs such as Wireshark and regmon. It gets worse. The illusion that Windows Vista can be secured is long dead , so no update or upgrade can redeem the user from becoming a zombie even Vista 7 is open to hijackers [ 1 , 2 , 3 ], long before release.
Users of Microsoft Office will be left vulnerable for at least another month :. From IDG :. Microsoft Corp. As usual, Microsoft is hiding the real scale and the real number of vulnerabilities. InformationWeek wrote about this also. Computers, including many running Windows operating systems, are used throughout the United States Department of Defense and by the armed forces of the United States in Afghanistan and elsewhere. The patches below are not necessary for Windows 7 or Server r2, as the exploit used by Conficker does not exist on these operating systems.
However, Microsoft Windows Server does require the patches below. If the above steps do not resolve the issue, reset all passwords and then perform the following steps to identify which machines are still attempting to spread the infection:. After completing the above steps for Cleaning Steps Network , all Administrative passwords should be changed again to ensure that Conficker does not have any of these passwords.
If Conficker is still showing threats after all machines are patched, then there is either an unpatched machine still remaining or ESET is not installed and updated on a machine. Need Assistance in North America? Alert: Information regarding the Log4j 2 vulnerability. Warning: After importing the downloaded file into your Windows Registry, any Autorun. NOTE: We recommend reading the following article for more information about this solution. You will need to restart your computer for the changes to take effect.
NOTE: In addition to downloading and installing the latest security patches, you can take other precautionary measures to reduce the risk of infection. Reset your system passwords to admin accounts using more sophisticated ones.
Replace permission entries on all child objects with entries shown here that apply to child objects. Press F5 to update Registry Editor. Note the path of the referenced DLL. Remove the malware service entry from the Run subkey in the registry. In both subkeys, locate any entry that begins with "rundll Delete the entry.
Check for Autorun. Use Notepad to open each file, and then verify that it is a valid Autorun. The following is an example of a typical valid Autorun. Set Show hidden files and folders so that you can see the file.
In step 12b, you noted the path of the referenced. For example, you noted a path that resembles the following:. Click Tools , and then click Folder Options. Edit the permissions on the file to add Full Control for Everyone. Click Everyone , and then click to select the Full Control check box in the Allow column. Delete the referenced. Turn off Autorun to help reduce the effect of any reinfection. For more information, click the following article number to view the article in the Microsoft Knowledge Base:.
If you are running Windows Vista or Windows Server , install security update Note Update and security update are not related to this malware issue. These updates must be installed to enable the registry function in step 23b.
If the system is running Windows Defender, re-enable the Windows Defender autostart location. To do this, type the following command at the command prompt:. To change this setting back, type the following command at a command prompt:. If, after you complete this procedure, the computer seems to be reinfected, either of the following conditions may be true:. One of the autostart locations was not removed. For example, either the AT job was not removed or an Autorun.
This malware may change other settings that are not addressed in this article. To do this, type the following commands at the command prompt. To verify the status of the SvcHost registry subkey, follow these steps:. In the details pane, double-click netsvcs , and then review the service names that are listed. Scroll down to the bottom of the list. If the computer is reinfected with Conficker, a random service name will be listed.
For example, in this procedure, the name of the malware service is "Iaslogon. If these steps do not resolve the issue, contact your antivirus software vendor. For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:. This should be reverted to the default settings by using Group Policy settings. If a policy is only removed, the default permissions may not be changed back. See the table of default permissions in the " Mitigation steps " section for more information.
Update the computer by installing any missing security updates. If you have problems identifying systems that are infected with Conficker, the details provided in the following TechNet blog may help:.
The following table shows default permissions for each operating system. Security-FAQs Blogging my journey from retail to the information security industry. Tags: Conficker Categories: Malware. About Lee Munson Lee's non-technical background allows him to write about internet security in a clear way that is understandable to both IT professionals and people just like you who need simple answers to your security questions.
Comments Jacques says. April 1, at pm. Lee says. January 23, at am. Danny says. Raj says. January 22, at pm. VT says. Downadup is now infecting 1million computers a day.
0コメント