Trojan:WinNT/Necurs.A (Microsoft), Troj/Necurs-BD (Sophos), Win32/TrojanDownloader.Necurs.A trojan (ESET)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It may be dropped by other malware.
It deletes the initially executed copy of itself.
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It may be dropped by the following malware:
This Trojan drops the following copies of itself into the affected system:
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
This Trojan is used by other malware for its rootkit functionalities.
This Trojan deletes the initially executed copy of itself
This Trojan disables services used by the following companies by modifying its code to return to unsuccessful status:
This Trojan disables drivers with the following names by modifying its code to return to unsuccessful status:
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Scan your computer with your Trend Micro product and note files detected as RTKT_NECURS.BGSF
Restart in Safe Mode
Search and delete the file detected as RTKT_NECURS.BGSF
Restart in normal mode and scan your computer with your Trend Micro product for files detected as RTKT_NECURS.BGSF. 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.