WORM_AUTORUN.EPA

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

Arrival Details

This Worm 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 Worm adds the following folders:

• {Removable Drive}:\Folder
• {Removable Drive}:\Folder\SubFolder

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

• %Application Data%\afd.exe
• {Removable Drive}:\Folder\SubFolder\file.exe

(Note: %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 drops the following files:

• {Removable Drive}:\Folder\SubFolder\Desktop.ini
• {Removable Drive}:\autorun.inf

It adds the following processes:

• netsh firewall add allowedprogram 1.exe 1 ENABLE

Autostart Technique

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

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Ctfmon32 = %Application Data%\afd.exe

HKEY_CURRENT_USER\Software\Microsoft\
Windows NT\CurrentVersion\Terminal Server\
Install\Software\Microsoft\
Windows\CurrentVersion\Run
Ctfmon32 = %Application Data%\afd.exe

Other System Modifications

This Worm adds the following registry entries as part of its installation routine:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplicataions\
List\%User Temp%
{malware file name}.exe = {malware directory}\{malware file name}.exe:*:Enabled:Ctfmon32

Other Details

This Worm connects to the following possibly malicious URL:

• one.{BLOCKED}t.com