TSPY_FYSNA.A

This spyware is also known as ChewBacca.

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 attempts to steal sensitive online banking information, such as user names and passwords. This routine risks the exposure of the user's account information, which may then lead to the unauthorized use of the stolen data. It logs a user's keystrokes to steal information.

It deletes itself after execution.

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.

Installation

This spyware drops the following copies of itself into the affected system:

• %Common Startup%\spoolsv.exe

(Note: %Common Startup% is the system's shared Startup folder, which is usually C:\Documents and Settings\All Users\Start Menu\Programs\Startup on Windows 2000, XP, and Server 2003.)

Backdoor Routine

This spyware posts the following information to its command and control (C&C) server:

• http://{BLOCKED}jysrvwfgmb.onion

Dropping Routine

This spyware drops the following file(s), which it uses for its keylogging routine:

• %User Temp%\system.log

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Information Theft

This spyware attempts to steal sensitive online banking information, such as user names and passwords. This routine risks the exposure of the user's account information, which may then lead to the unauthorized use of the stolen data.

It logs a user's keystrokes to steal information.

Other Details

This spyware connects to the following URL(s) to get the affected system's IP address:

• http://{BLOCKED}a.net/ip

It deletes itself after execution.

NOTES:

This spyware attempts to steal payment or credit card information from the following brands:

• IATA-ATA
• Diners
• AmericanExpress
• JCB
• Visa
• MasterCard
• Novus (former partner of Discovery Card)

It uses TOR client for server connection.

It attempts to steal personal information such as home and office addresses, mobile numbers, personal title, and organizational status.

It uses the following regular expressions as pattern for scanning track data:

• ([0-9]{13,19}[=D][0-9]{5,50})\?
• ([0-9]{13,19}[\^][A-Za-z\s]{0,30}[\/][[A-Za-z\s]{0,30}[\^]([0-9\s]{1,70})\?)

It uses the following URL Query strings to send data via HTTP POST:

sendlog.php

• name="logfile"
• file name="User Temp%\system.log"

recvdata.php

• rawdata={data}
• tmpdata={data}
• procdata={data}