TROJ_UPATRE.FDT

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 deletes itself after execution.

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.

Installation

This Trojan drops the following copies of itself into the affected system and executes them:

• %User Temp%\satos.exe

(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.)

It drops the following files:

• %User Temp%\utt28A6.tmp- contains the executed malware path(will be overwrited once it downloads in which it will save a file)

(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.)

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Download Routine

This Trojan accesses the following websites to download files:

• http://{BLOCKED}-DRIVE-TRANSYND-TES295-ATF.COM/images/inf21.jpa
• http://{BLOCKED}tsyntheticmotoroil.com/images/inf21.jpa
• http://www.{BLOCKED}-drive-transynd-tes295-atf.com/images/inf21.jpa
• http://www.{BLOCKED}tsyntheticmotoroil.com/images/inf21.jpa

It saves the files it downloads using the following names:

• %User Temp%\EXE{value}.exe -it will be executed, detected as TSPY_DYRE.CBA
• %User Temp%\utt28A6.tmp -encrypted form of the downloaded file

(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.)

Other Details

This Trojan deletes itself after execution.

NOTES:

It connects to the following URL to report infection of the affected system:

• http://{BLOCKED}.{BLOCKED}.228.4:{random port}/0512uk21/{computer name of affected system}/0/{OS version}-{service pack}/0/
• http://{BLOCKED}.{BLOCKED}.228.4:{random port}/0512uk21/{computer name of affected system}/{value}/{value}/{value}

It reports the following information of the affected system:

• Computer Name
• OS version
• Service Pack

It does not have rootkit capabilities.

It does not exploit any vulnerability.