TSPY_EMOTET.XXTL

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

It modifies the Internet Explorer Zone Settings.

As of this writing, the said sites are inaccessible.

Arrival Details

This Trojan Spy 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 Spy drops the following copies of itself into the affected system:

• %AppDataLocal%\{random name}\{random name}.exe

(Note: %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local 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.)

Autostart Technique

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

• %User Startup%\{random name}.lnk

(Note: %User Startup% is the current user's Startup folder, which is usually C:\Documents and Settings\{user}\Start Menu\Programs\Startup on Windows 2000 and XP, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows Vista, 7, and 8.)

Web Browser Home Page and Search Page Modification

This Trojan Spy modifies the Internet Explorer Zone Settings.

Download Routine

This Trojan Spy accesses the following websites to download files:

• When running on a Virtual Environment, the malware connects to the following inaccessible/fake URLs:
  • http://{BLOCKED}.{BLOCKED}.24.211:443
  • http://{BLOCKED}.{BLOCKED}.22.63:443
  • http://{BLOCKED}.{BLOCKED}.5.69:443
  • http://{BLOCKED}.{BLOCKED}.82.254:443
  • http://{BLOCKED}.{BLOCKED}.81.35:8080
  • http://{BLOCKED}.{BLOCKED}.66.107:8080
  • http://{BLOCKED}.{BLOCKED}.119.91:8080
  • http://{BLOCKED}.{BLOCKED}.145.252:8080
  • http://{BLOCKED}.{BLOCKED}.172.45:8080
  • http://{BLOCKED}.{BLOCKED}.83.86:8080
  • http://{BLOCKED}.{BLOCKED}.231.207:8080
  • http://{BLOCKED}.{BLOCKED}.33.202:8080
  • http://{BLOCKED}.{BLOCKED}.215.16:8080
  • http://{BLOCKED}.{BLOCKED}.36.193:8080
• When the malware is not running on a Virtual Environment, it connects to the following URL:
  • http://{BLOCKED}.{BLOCKED}.75.19:8080

It saves the files it downloads using the following names:

• %User Temp%\{random filename}.tmp

(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.)

As of this writing, the said sites are inaccessible.

Information Theft

This Trojan Spy attempts to steal stored email credentials from the following:

• Installed mail clients