TROJ_TDSS.SMEE
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Trojan may arrive bundled with malware packages as a malware component. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It also has rootkit capabilities, which enables it to hide its processes and files from the user.
However, as of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
Varies
EXE
Yes
19 Apr 2011
Arrival Details
This Trojan may arrive bundled with malware packages as a malware component.
It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This Trojan drops the following component file(s):
- %System%\drivers\TDSSserv.sys
- %System%\TDSS{random}.sys
- %User Temp%\TDSS{random}.tmp
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
Other System Modifications
This Trojan adds the following registry keys as part of its installation routine:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\TDSSserv.sys
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\tdssdata
Rootkit Capabilities
This Trojan also has rootkit capabilities, which enables it to hide its processes and files from the user.
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}wsblog.net/tdss/crcmds/main
- http://{BLOCKED}9.com/cgi-bin/wtsin.cgi?s=z/tdss/crcmds/main
- http://{BLOCKED}m.ru/?ref=atom999
However, as of this writing, the said sites are inaccessible.