TrojanSpy.Win32.NUMANDO.MSIDLDT

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 executes then deletes itself afterward.

It retrieves specific information from the affected system.

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 files:

• {Malware file path}\music.mp3
• {Malware file path}\{Computer name}.pdf (contains the malware's latest path)

It drops the following copies of itself into the affected system:

• {Malware file path}\{Random 8 characters from A-Z}.exe

It adds the following processes:

• "{Default browser file path}" https://{BLOCKED}o.bo/2ULIS4F

It executes then deletes itself afterward.

Autostart Technique

This Trojan Spy adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{Malware name}.exe = {Malware file path and name}.exe

It drops the following files:

• %User Startup%\{Random 8 characters from A-Z}.vbs

(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, C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows 2003(32-bit), XP and 2000(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit), 10(64-bit).)

Other System Modifications

This Trojan Spy modifies the following file(s):

• %AppDataLocal%\Google\Chrome\User Data\Local State
• %Application Data%\Mozilla\Firefox\Profiles\{Default profile}\prefs.js

(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It deletes the following files:

• {Malware file path}\{Computer name}.pdf

Process Termination

This Trojan Spy terminates the following processes if found running in the affected system's memory:

• chrome.exe
• firefox.exe

Information Theft

This Trojan Spy retrieves the following information from the affected system:

• Operating system
• Credentials from the following internet banking sites:
  • Banco de Brasil
  • Auto Atendimento Banco de Brasil
  • Caixa Internet Banking
  • Itaú Banking
  • Any site with text "Internet banking"

Other Details

This Trojan Spy does the following:

• It receives data from the folliowing websites:
  • https://docs.google.com/document/d/e/{BLOCKED}1vS_sV6OefdyzXWtL0LwZcspJIf6HvJ12v1MKAZQU33-neFhz2sTa22nrgtKrkw9XSqj4gcjyb92kgif/pub