ADW_NADDYAL

This adware 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 adware 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 adware drops the following copies of itself into the affected system:

• %User Temp%\~nsu.tmp\Au_.exe

(Note: %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:

• %User Temp%\~nsu.tmp

(Note: %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.)

Other System Modifications

This adware deletes the following files:

• %User Temp%\nsv4.tmp
• %User Temp%\~nsu.tmp\Au_.exe
• %User Temp%\~nsu.tmp\Bu_.exe
• %User Temp%\~nsu.tmp\Cu_.exe
• %User Temp%\~nsu.tmp\Du_.exe
• %User Temp%\~nsu.tmp\Eu_.exe
• %User Temp%\~nsu.tmp\Fu_.exe
• %User Temp%\~nsu.tmp\Gu_.exe
• %User Temp%\~nsu.tmp\Hu_.exe
• %User Temp%\~nsu.tmp\Iu_.exe
• %User Temp%\~nsu.tmp\Ju_.exe
• %User Temp%\~nsu.tmp\Ku_.exe
• %User Temp%\~nsu.tmp\Lu_.exe
• %User Temp%\~nsu.tmp\Mu_.exe
• %User Temp%\~nsu.tmp\Nu_.exe
• %User Temp%\~nsu.tmp\Ou_.exe
• %User Temp%\~nsu.tmp\Pu_.exe
• %User Temp%\~nsu.tmp\Qu_.exe
• %User Temp%\~nsu.tmp\Ru_.exe
• %User Temp%\~nsu.tmp\Su_.exe
• %User Temp%\~nsu.tmp\Tu_.exe
• %User Temp%\~nsu.tmp\Uu_.exe
• %User Temp%\~nsu.tmp\Vu_.exe
• %User Temp%\~nsu.tmp\Wu_.exe
• %User Temp%\~nsu.tmp\Xu_.exe
• %User Temp%\~nsu.tmp\Yu_.exe
• %User Temp%\~nsu.tmp\Zu_.exe
• %User Temp%\nscB.tmp

(Note: %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.)

Dropping Routine

This adware drops the following files:

• %User Temp%\nsv6.tmp
• %User Temp%\nscD.tmp

(Note: %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.)

This report is generated via an automated analysis system.