ADW_AIRADINSTALLER

May 27, 2014
 Analysis by: Jimelle Monteser
 ALIASES:

AirInstaller (fs) (Sunbelt), Adware/AirAdInstaller (Fortinet), AdWare.Win32 (Ikarus), AdWare.Win32.AirAdInstaller.aldw (Kaspersky), a variant of Win32/AirAdInstaller.A application (NOD32)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 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.

  TECHNICAL DETAILS

File Size:

827,304 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

11 May 2014

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%\setup.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%\{random folder name}
  • %User Temp%\{random folder name}\theme
  • %User Temp%\{random folder name}\theme\config
  • %User Temp%\{random folder name}\theme\css
  • %User Temp%\{random folder name}\theme\html
  • %User Temp%\{random folder name}\theme\images
  • %User Temp%\{random folder name}\theme\js
  • %User Temp%\{random folder name}\theme\software
  • %User Temp%\airinstaller

(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%\{random folder name}\cancel_page.html
  • %User Temp%\{random folder name}\download_page.html
  • %User Temp%\{random folder name}\installer.html
  • %User Temp%\{random folder name}\installer_temp.html
  • %User Temp%\{random folder name}\intro_page.html
  • %User Temp%\{random folder name}\language.map
  • %User Temp%\{random folder name}\session.xml
  • %User Temp%\{random folder name}\summary_page.html
  • %User Temp%\{random folder name}\theme\config\settings.xml
  • %User Temp%\{random folder name}\theme\css\modal-overlay.css
  • %User Temp%\{random folder name}\theme\css\style.css
  • %User Temp%\{random folder name}\theme\de.lang
  • %User Temp%\{random folder name}\theme\es.lang
  • %User Temp%\{random folder name}\theme\html\cancelfooter.html
  • %User Temp%\{random folder name}\theme\html\cancelheader.html
  • %User Temp%\{random folder name}\theme\html\downloadpage.html
  • %User Temp%\{random folder name}\theme\html\footer.html
  • %User Temp%\{random folder name}\theme\html\header.html
  • %User Temp%\{random folder name}\theme\html\header_.html
  • %User Temp%\{random folder name}\theme\html\installoptionspage.html
  • %User Temp%\{random folder name}\theme\html\intropage.html
  • %User Temp%\{random folder name}\theme\html\offerfooter.html
  • %User Temp%\{random folder name}\theme\html\offerheader.html
  • %User Temp%\{random folder name}\theme\html\summarypage.html
  • %User Temp%\{random folder name}\theme\html\uninstaller.html
  • %User Temp%\{random folder name}\theme\images\100free.png
  • %User Temp%\{random folder name}\theme\images\bg.png
  • %User Temp%\{random folder name}\theme\images\bg_full.png
  • %User Temp%\{random folder name}\theme\images\bg_old.png
  • %User Temp%\{random folder name}\theme\images\btn_accept.png
  • %User Temp%\{random folder name}\theme\images\btn_decline.png
  • %User Temp%\{random folder name}\theme\images\btn_next.png
  • %User Temp%\{random folder name}\theme\images\btn_next_disabled.png
  • %User Temp%\{random folder name}\theme\images\btn_skip_all.png
  • %User Temp%\{random folder name}\theme\images\cancel.png 3KB
  • %User Temp%\{random folder name}\theme\images\complete.png
  • %User Temp%\{random folder name}\theme\images\done.png
  • %User Temp%\{random folder name}\theme\images\girl.png
  • %User Temp%\{random folder name}\theme\images\green_shield.png
  • %User Temp%\{random folder name}\theme\images\modal-overlay.png
  • %User Temp%\{random folder name}\theme\images\sprite-top.png
  • %User Temp%\{random folder name}\theme\images\sprite.png
  • %User Temp%\{random folder name}\theme\images\thumb.png
  • %User Temp%\{random folder name}\theme\images\thumb_lock.png
  • %User Temp%\{random folder name}\theme\images\top-sprite.png
  • %User Temp%\{random folder name}\theme\images\topbar.png
  • %User Temp%\{random folder name}\theme\images\yontoo-layers.png
  • %User Temp%\{random folder name}\theme\images\yontoo.png
  • %User Temp%\{random folder name}\theme\js\modal-overlay.js
  • %User Temp%\{random folder name}\theme\software\compat-1.png
  • %User Temp%\{random folder name}\theme\software\de.lang
  • %User Temp%\{random folder name}\theme\software\es.lang
  • %User Temp%\{random folder name}\theme\software\logo.png
  • %User Temp%\{random folder name}\theme\software\software-girl.png
  • %User Temp%\{random folder name}\theme\software\software.html
  • %User Temp%\{random folder name}\theme\software\title.png
  • %User Temp%\{random folder name}\uninstaller.html

(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://{BLOCKED}.{BLOCKED}taller.com/get/event/?{random characters}
  • http://{BLOCKED}.{BLOCKED}taller.com/get/log/?{random characters}
  • http://{BLOCKED}.{BLOCKED}taller.com/get/launch/?{random characters}
  • http://{BLOCKED}.{BLOCKED}taller.com/get/session/?{random characters}
  • http://{BLOCKED}.{BLOCKED}taller.com/get/event/?{random characters}
  • http://{BLOCKED}.{BLOCKED}static.com/themes/theme_5/theme_5.zip
  • http://{BLOCKED}.{BLOCKED}taller.com/get/file_size/?{random characters}
  • http://cdn1.airdlrstatic.com/themes/theme_5/software_377.zip

  SOLUTION

Minimum Scan Engine:

9.700

SSAPI PATTERN File:

1.508.37

SSAPI PATTERN Date:

12 May 2014

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Search and delete these folders

[ 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%\{random folder name}
  • %User Temp%\airinstaller

Step 3

Scan your computer with your Trend Micro product to delete files detected as ADW_AIRADINSTALLER. 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.


Did this description help? Tell us how we did.