TROJ_BADUR.NIR

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.

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 file(s)/component(s):

• %Application Data%\Flash\Launch.bat
• %Application Data%\Flash\libgmp-3.dll
• %Application Data%\Flash\msvcp120.dll
• %Application Data%\Flash\msvcr120.dll
• %Application Data%\Flash\RapidPrime.exe
• %User Temp%\CNB_0275.exe
• %User Temp%\setup.dat

(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.. %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, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

It creates the following folders:

• %Application Data%\Flash

(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

Autostart Technique

This Trojan drops the following file(s) in the Windows User Startup folder to enable its automatic execution at every system startup:

• %User Startup%\flashsec.lnk
• %User Startup%\flashupdate.lnk

(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, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.)

Download Routine

This Trojan connects to the following URL(s) to download its component file(s):

• http://{BLOCKED}.{BLOCKED}.248.85/sgminer.exe
• http://{BLOCKED}.{BLOCKED}.248.85/firstsg.vbs
• http://{BLOCKED}.{BLOCKED}.248.85/updatesg.vbs
• http://{BLOCKED}.{BLOCKED}.248.85/flashsec.exe
• http://{BLOCKED}.{BLOCKED}.248.85/startsec.vbs
• http://{BLOCKED}.{BLOCKED}.248.85/updatesec.vbs
• http://{BLOCKED}.{BLOCKED}.248.85/alien_clicker.exe
• http://{BLOCKED}.{BLOCKED}.248.85/startcl.vbs
• http://{BLOCKED}.{BLOCKED}.248.85/updatecl.vbs
• http://{BLOCKED}.{BLOCKED}.248.85/info.txt
• http://{BLOCKED}54hhdf.com/report.log

It saves the files it downloads using the following names:

• %Application Data%\Flash\firstsg.vbs
• %Application Data%\Flash\flashcl.exe
• %Application Data%\Flash\flashsec.exe
• %Application Data%\Flash\info.txt
• %Application Data%\Flash\sgminer.exe
• %Application Data%\Flash\startcl.vbs
• %Application Data%\Flash\startsec.vbs
• %Application Data%\Flash\updatecl.vbs
• %Application Data%\Flash\updatesec.vbs
• %Application Data%\Flash\updatesg.vbs

(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)