TSPY_KEYLOGGER.R

This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system. As of this writing, the said sites are inaccessible.

Arrival Details

This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Autostart Technique

This spyware drops the following shortcut pointing to its copy in the User Startup folder to enable its automatic execution at every system startup:

• %User Startup%\Wingin.lnk
• %All Users Profile%\Start Menu\Programs\Startup\Wingin.lnk

(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.. %All Users Profile% is the All Users or Common profile folder, which is C:\Documents and Settings\All Users in Windows 2000, XP, and Server 2003, and C:\ProgramData in Windows Vista and 7.)

Download Routine

This spyware connects to the following website(s) to download and execute a malicious file:

• http://{BLOCKED}ssociate.net/crest/{Host Name}/ReadResponse()

It saves the files it downloads using the following names:

• %AppDataLocal%\ReadResponse().exe

(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local on Windows Vista and 7.)

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

As of this writing, the said sites are inaccessible.

Information Theft

This spyware gathers the following data:

• Host Name

Stolen Information

This spyware sends the gathered information via HTTP POST to the following URL:

• http://{BLOCKED}ssociate.net/crest/root.php?cname={Host Name}&str=&file=no

NOTES:
Based on code analysis, this malware can log user's keystrokes to steal information.