TROJ_SEFNIT.KLF
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan may arrive bundled with malware packages as a malware component. It may be dropped by other malware.
It is a component of other malware.
It requires its main component to successfully perform its intended routine.
TECHNICAL DETAILS
155,648 bytes
DLL
Yes
04 Jan 2012
Creates files, Modifies system registry, Terminates processes
Arrival Details
This Trojan may arrive bundled with malware packages as a malware component.
It may be dropped by other malware.
Installation
This Trojan is a component of other malware.
Other Details
This Trojan requires its main component to successfully perform its intended routine.
NOTES:
This malware is capable of the following routines:
- Create Files and Folders
- Create/Terminate Process
- Create/Modify/Delete Registry Entries
SOLUTION
9.200
8.686.04
04 Jan 2012
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Scan your computer with your Trend Micro product and note files detected as TROJ_SEFNIT.KLF
Step 3
Restart in Safe Mode
Step 4
Search and delete the file detected as TROJ_SEFNIT.KLF
*Note: Some component files may be hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files and folders in the search result.
To manually delete a malware/grayware file from the affected system:
- Right-click Start then click Search....
- In the Named input box, type the name of the file that was detected earlier.
- In the Look In drop-down list, select My Computer then press Enter.
- Once located, select the file then press SHIFT+DELETE to delete it.
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_SEFNIT.KLF. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
NOTES:
Recommendations
1. This malware is detected and removed by the latest Trend Micro anti-malware engine and pattern. Always keep pattern files and engines up-to-date. To know more about updating your Trend Micro product’s pattern, please refer to the following Trend Micro support page:
- http://esupport.trendmicro.com/9/How-do-I-manually-update-the-virus-pattern-of-my-Trend-Micro-Internet.aspx
Note: The steps apply for specific products indicated in the page.
2. To actively detect and protect your machine, enable real-time scanning of your Trend Micro anti-malware product. Refer to the following Trend Micro support page to know more about enabling real-time scanning in your Trend Micro product:
- Home Users: http://esupport.trendmicro.com/solution/en-us/1054798.aspx
- Business Users: http://esupport.trendmicro.com/Pages/How-do-I-enable-or-disable-the-Real-time-Protection-of-Trend-M-EN-1038331.aspx
3. Keep software and operating systems updated with latest patches released by vendors to address vulnerabilities and exploits.
4. Block unused ports to disallow malware from using these ports to communicate and/or enforce commands.
5. Be aware of social engineering attacks.
6. Avoid accessing the listed malicious URLs to prevent possible re-infection.
7. Monitor network connections for any suspicious connection or connectivity.
8. Regularly update list of sites that are trusted.
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