ADW_RMARKIT

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
• %System Root%\DOCUME~1
• %System Root%\DOCUME~1\Wilbert
• %User Profile%\LOCALS~1
• %User Temp%\nskC.tmp
• %System%\GroupPolicy
• %System%\GroupPolicy\Machine
• %System%\GroupPolicy\User

(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.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %System% is the Windows system folder, which is usually C:\Windows\System32.)

Other System Modifications

This adware deletes the following files:

• %User Temp%\nsk1.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%\nsf8.tmp
• %User Temp%\nskC.tmp
• %Windows%\Tasks\Re-mark-it_wd.job
• %Program Files%\Re-mark-it\Re-markit155.exe
• %Windows%\Tasks\Re-mark-it Update.job

(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.. %Windows% is the Windows folder, which is usually C:\Windows.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

It adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Group Policy Objects\
{B8E81614-D04D-4B10-BD4E-BC19BCFB3ECA}User

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Group Policy Objects\
{B8E81614-D04D-4B10-BD4E-BC19BCFB3ECA}Machine

Dropping Routine

This adware drops the following files:

• %User Temp%\nsk3.tmp
• %User Temp%\nsuA.tmp
• %User Temp%\nskC.tmp\ioSpecial.ini
• %User Temp%\nskC.tmp\modern-wizard.bmp
• %User Temp%\nskC.tmp\InstallOptions.dll
• %User Temp%\nskC.tmp\nsru.dll
• %User Temp%\upr13.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 Details

This adware connects to the following possibly malicious URL:

• http://rep.{BLOCKED}opti.net/report/uninstalled/?{random characters}

This report is generated via an automated analysis system.