Home Malware Programs Trojans Win32:Sirefef-FQ

Win32:Sirefef-FQ

Posted: December 11, 2012

Threat Metric

Threat Level: 9/10
Infected PCs: 19
First Seen: December 11, 2012
Last Seen: February 7, 2021
OS(es) Affected: Windows

Win32:Sirefef-FQ is a Trojan that drops other PC threats on the targeted computer. Win32:Sirefef-FQ uses rootkit techniques to cover its existence on the infected computer system while disguising its files and modules. rootkit will invade the victimized machine if the PC user opens an attached file added to a spam email message. Win32:Sirefef-FQ can also circulate through a variety of explicit websites and file-servers. When the PC user opens the file infected with Win32:Sirefef-FQ, it runs a malicious code that will harm a part of the affected computer system and reduce overall PC performance. Win32:Sirefef-FQ slows down Internet connection when it attempts to download other malware infections from a remote server. All activities of Win32:Sirefef-FQ are hidden; therefore, victims will not notice them on the corrupted PC. Win32:Sirefef-FQ deletes some file, leads to browser redirects, and blocks access to files and programs. Win32:Sirefef-FQ opens a backdoor that enables attackers to gain remote access over the targeted computer. Win32:Sirefef-FQ enables attackers to download and execute files, which results in other risks.

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:



0da901be0252bb583de140cde4f678c1 File name: 0da901be0252bb583de140cde4f678c1
Size: 65.53 KB (65536 bytes)
MD5: 0da901be0252bb583de140cde4f678c1
Detection count: 47
Group: Malware file
Last Updated: March 5, 2013
fb6be40c36a7588423242259e4859e8f File name: fb6be40c36a7588423242259e4859e8f
Size: 28.7 KB (28704 bytes)
MD5: fb6be40c36a7588423242259e4859e8f
Detection count: 46
Group: Malware file
Last Updated: March 5, 2013
d3d9ab19551b4095e14edbd73e6b1cc8 File name: d3d9ab19551b4095e14edbd73e6b1cc8
Size: 28.7 KB (28704 bytes)
MD5: d3d9ab19551b4095e14edbd73e6b1cc8
Detection count: 45
Group: Malware file
Last Updated: March 5, 2013
C:\TDSSKiller_Quarantine\06.02.2021_17.06.08\zasubsys0000\zafs0000\tsk0000.dta File name: tsk0000.dta
Size: 4.09 KB (4096 bytes)
MD5: 878f9b6da85cb98fcbdf6abd1730a32f
Detection count: 9
Mime Type: unknown/dta
Path: C:\TDSSKiller_Quarantine\06.02.2021_17.06.08\zasubsys0000\zafs0000\tsk0000.dta
Group: Malware file
Last Updated: February 7, 2021
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