Analysis by: Mark Joseph Manahan
ALIASES:

a variant of Win32/InstallCore.AG application (Eset)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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. It may be manually installed by a user.

  TECHNICAL DETAILS

File Size: 1,113,680 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 01 Oct 2012

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.

It may be manually installed by a user.

Installation

This adware drops the following files:

  • %User Temp%\ISH1524703\css\ie6_main.css
  • %User Temp%\ISH1524703\css\main.css
  • %User Temp%\ISH1524703\css\sdk-ui\browse.css
  • %User Temp%\ISH1524703\css\sdk-ui\button.css
  • %User Temp%\ISH1524703\css\sdk-ui\checkbox.css
  • %User Temp%\ISH1524703\css\sdk-ui\images\BUTTON-BG.PNG
  • %User Temp%\ISH1524703\css\sdk-ui\images\PROGRESS-BG-CORNER.PNG
  • %User Temp%\ISH1524703\css\sdk-ui\images\PROGRESS-BG.PNG
  • %User Temp%\ISH1524703\css\sdk-ui\images\PROGRESS-BG2.PNG
  • %User Temp%\ISH1524703\css\sdk-ui\PROGRESS-BAR.CSS
  • %User Temp%\ISH1524703\CSSHOVER3.HTC
  • %User Temp%\ISH1524703\images\BACK-OVER.PNG
  • %User Temp%\ISH1524703\images\close.png
  • %User Temp%\ISH1524703\images\loader.gif
  • %User Temp%\ISH1524703\BOOTSTRAP_6026.HTML
  • %User Temp%\IS908805873\moozy_us.exe
  • %User Temp%\IS908805873\707546328.CFG
  • %User Temp%\IS908805873\1355660006.CFG
  • %Desktop%\CONTINUE MOOZY INSTALLATION.LNK

(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.. %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.)

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

  • %User Temp%\ICREINSTALL_{Malware Name}

(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.)

It creates the following folders:

  • %User Temp%\IS908805873
  • %User Temp%\ISH1524703

(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.)

Other Details

This adware connects to the following possibly malicious URL:

  • {BLOCKED}.{BLOCKED}.27.53/app/GreatelSoft/moozy.cis
  • {BLOCKED}.{BLOCKED}.102.61/app/GreatelSoft/moozy.cis
  • {BLOCKED}.{BLOCKED}.185.13/GreatelSoft/?v=2.0&c=1310345752

  SOLUTION

Minimum Scan Engine: 9.200

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Identify and terminate files detected as ADW_MOOZY

[ Learn More ]
  1. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  2. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 3

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.  
  • %User Temp%\IS908805873
  • %User Temp%\ISH1524703

Step 4

Search and delete these files

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %Desktop%\CONTINUE MOOZY INSTALLATION.LNK

Step 5

Scan your computer with your Trend Micro product to delete files detected as ADW_MOOZY If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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