TROJ_DAPATO.YVX

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 does not have any propagation routine.

It does not have any backdoor routine.

It does not have any information-stealing capability.

Arrival Details

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.

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Dropping Routine

This Trojan drops the following files:

• %User Temp%\success.asp

(Note: %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.)

Download Routine

This Trojan saves the files it downloads using the following names:

• %User Temp%\index.html - contains the URLs
• %User Temp%\{strings in index.html}exe - downloaded file from the retrieved URLs in index.html
• %User Temp%\{strings in index.html} - downloaded file from the retrieved URLs in index.html

(Note: %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.)

Information Theft

This Trojan does not have any information-stealing capability.

NOTES:

It connects to the following URLs to download and execute possibly malicious files:

• http://{BLOCKED}p.sst1.info/files/nb1/index.html?{random}
• {URLs found in the downloaded file, index.html}

It connects to the following URL as a notification for successful download routine.

• http://{BLOCKED}p.{BLOCKED}t1.info/files/nb1/success.asp?{random}

As of this writing, the said sites are inaccessible.

It does not have rootkit capabilities.

It does not exploit any vulnerability.