PE_ENISSEC.JM

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

It deletes the initially executed copy of itself.

Arrival Details

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

Autostart Technique

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

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Explorer = "%System%\drivers\TXPlatform.exe"

Other System Modifications

This file infector deletes the following files:

• %System Root%\¡¡¡¡¡¡.exe

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It deletes the following folders:

• %System Root%\autorun.inf

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It modifies the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoDriveTypeAutoRun = 8

(Note: The default value data of the said registry entry is 91.)

Dropping Routine

This file infector drops the following files:

• Cool_GameSetup.exe.exe
• %System%\drivers\TXPlatform.exe
• %System Root%\QQ.sys
• %User Temp%\62$$.Ico
• %Program Files%\Desktop_1.ini
• %Program Files%\MSN Gaming Zone\Desktop_1.ini
• %Program Files%\Online Services\Desktop_1.ini
• %Program Files%\Uninstall Information\Desktop_1.ini
• %Program Files%\WinPcap\Desktop_1.ini
• %User Temp%\3$$.Ico
• %User Temp%\11$$.Ico
• %Program Files%\xerox\Desktop_1.ini
• %Program Files%\xerox\nwwia\Desktop_1.ini
• %System Root%\RECYCLER\Desktop_1.ini
• %System Root%\RECYCLER\S-1-5-21-436374069-362288127-839522115-1003\Desktop_1.ini
• %System Root%\RECYCLER\S-1-5-21-436374069-362288127-839522115-500\Desktop_1.ini
• %User Temp%\74$$.Ico
• %System Root%\autorun.inf
• %User Temp%\7$$.Ico
• %User Temp%\myUPdatetxt.txt
• %User Temp%\64$$.Ico
• %User Temp%\82$$.Ico
• %User Temp%\42$$.Ico
• %User Temp%\41$$.Ico
• %User Temp%\1$$.Ico
• %User Temp%\56$$.Ico
• %System Root%\Cool_GameSetup.exe.exe
• %Program Files%\WinPcap\Uninstall.exe
• %System Root%\vcredist_x86.exe
• %System Root%\¡¡¡¡¡¡.exe

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %Program Files% is the default Program Files folder, usually C:\Program Files.)

Other Details

This file infector connects to the following possibly malicious URL:

• http://www.{BLOCKED}S.COM/goto/down.txt

It deletes the initially executed copy of itself

This report is generated via an automated analysis system.