ADW_ADSHOW
DownloadAdmin (fs) (Sunbelt); Download Admin (Sophos); Win32/DownloadAdmin.G (ESET-NOD32)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Adware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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.
It connects to certain websites to send and receive information.
TECHNICAL DETAILS
833,448 bytes
EXE
No
22 May 2014
Connects to URLs/IPs
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 adds the following folders:
- %User Temp%\ns{random}.tmp
- %User Temp%\ns{random}.tmp\apps
- %User Temp%\ns{random}.tmp\LuaSocket
- %User Temp%\ns{random}.tmp\skin
- %User Temp%\ns{random}.tmp\wininet
(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 drops the following files:
- %User Temp%\ns{random}.tmp\__web.xml
- %User Temp%\ns{random}.tmp\ButtonEvent.dll
- %User Temp%\ns{random}.tmp\customNsWeb.dll
- %User Temp%\ns{random}.tmp\AdvancedTests.lua
- %User Temp%\ns{random}.tmp\api_substitution.lua
- %User Temp%\ns{random}.tmp\async_tracking.lua
- %User Temp%\ns{random}.tmp\bit.dll
- %User Temp%\ns{random}.tmp\BrowserControl.lua
- %User Temp%\ns{random}.tmp\browserutils.dll
- %User Temp%\ns{random}.tmp\bundleinstall.lua
- %User Temp%\ns{random}.tmp\callbackproxy.lua
- %User Temp%\ns{random}.tmp\data_injection.lua
- %User Temp%\ns{random}.tmp\definitions.lua
- %User Temp%\ns{random}.tmp\DownloadList.lua
- %User Temp%\ns{random}.tmp\downloads.lua
- %User Temp%\ns{random}.tmp\DownloadThread.lua
- %User Temp%\ns{random}.tmp\eagerinstall.lua
- %User Temp%\ns{random}.tmp\env.lua
- %User Temp%\ns{random}.tmp\Events.lua
- %User Temp%\ns{random}.tmp\extension.tlb
- %User Temp%\ns{random}.tmp\ffi.dll
- %User Temp%\ns{random}.tmp\FloatingProgress.dll
- %User Temp%\ns{random}.tmp\GuiInit.lua
- %User Temp%\ns{random}.tmp\IntegratedOffer.lua
- %User Temp%\ns{random}.tmp\json.lua
- %User Temp%\ns{random}.tmp\lua51.dll
- %User Temp%\ns{random}.tmp\LuaBridge.dll
- %User Temp%\ns{random}.tmp\luacom.dll
- %User Temp%\ns{random}.tmp\LuaSocket\lua\ltn12.lua
- %User Temp%\ns{random}.tmp\LuaSocket\lua\mime.lua
- %User Temp%\ns{random}.tmp\LuaSocket\lua\socket.lua
- %User Temp%\ns{random}.tmp\LuaSocket\lua\socket\ftp.lua
- %User Temp%\ns{random}.tmp\LuaSocket\lua\socket\http.lua
- %User Temp%\ns{random}.tmp\LuaSocket\lua\socket\smtp.lua
- %User Temp%\ns{random}.tmp\LuaSocket\lua\socket\tp.lua
- %User Temp%\ns{random}.tmp\LuaSocket\lua\socket\url.lua
- %User Temp%\ns{random}.tmp\LuaSocket\mime\core.dll
- %User Temp%\ns{random}.tmp\LuaSocket\socket\core.dll
- %User Temp%\ns{random}.tmp\luaxml.lua
- %User Temp%\ns{random}.tmp\LuaXml_lib.dll
- %User Temp%\ns{random}.tmp\net_utils.lua
- %User Temp%\ns{random}.tmp\notifyicon.lua
- %User Temp%\ns{random}.tmp\nsis7z.dll
- %User Temp%\ns{random}.tmp\nsisunz.dll
- %User Temp%\ns{random}.tmp\packaged_app.lua
- %User Temp%\ns{random}.tmp\processfreefile.lua
- %User Temp%\ns{random}.tmp\sandbox.lua
- %User Temp%\ns{random}.tmp\scheduler.lua
- %User Temp%\ns{random}.tmp\service_registry.lua
- %User Temp%\ns{random}.tmp\skin.zip
- %User Temp%\ns{random}.tmp\skin\assets\.DS_Store
- %User Temp%\ns{random}.tmp\skin\assets\accept.png
- %User Temp%\ns{random}.tmp\skin\assets\accept-lg.png
- %User Temp%\ns{random}.tmp\skin\assets\back.png
- %User Temp%\ns{random}.tmp\skin\assets\cancel.png
- %User Temp%\ns{random}.tmp\skin\assets\close.png
- %User Temp%\ns{random}.tmp\skin\assets\decline.png
- %User Temp%\ns{random}.tmp\skin\assets\default_logo.png
- %User Temp%\ns{random}.tmp\skin\assets\main.css
- %User Temp%\ns{random}.tmp\skin\assets\next.png
- %User Temp%\ns{random}.tmp\skin\assets\progress.gif
- %User Temp%\ns{random}.tmp\skin\assets\progress-bar.gif
- %User Temp%\ns{random}.tmp\skin\assets\progressPause.gif
- %User Temp%\ns{random}.tmp\skin\assets\skin.png
- %User Temp%\ns{random}.tmp\skin\assets\step_bg.png
- %User Temp%\ns{random}.tmp\skin\assets\step_off.png
- %User Temp%\ns{random}.tmp\skin\assets\step_on.png
- %User Temp%\ns{random}.tmp\skin\index.html
- %User Temp%\ns{random}.tmp\skin\options.json
- %User Temp%\ns{random}.tmp\skin\res\common.css
- %User Temp%\ns{random}.tmp\skin\res\common.js
- %User Temp%\ns{random}.tmp\skin\res\jquery.js
- %User Temp%\ns{random}.tmp\skin\res\knockout.js
- %User Temp%\ns{random}.tmp\survey_environment.lua
- %User Temp%\ns{random}.tmp\System.dll
- %User Temp%\ns{random}.tmp\UACInfo.dll
- %User Temp%\ns{random}.tmp\uistate.lua
- %User Temp%\ns{random}.tmp\un.package.exe
- %User Temp%\ns{random}.tmp\utils.lua
- %User Temp%\ns{random}.tmp\version.dll
- %User Temp%\ns{random}.tmp\vm_details.lua
- %User Temp%\ns{random}.tmp\win32_constants.lua
- %User Temp%\ns{random}.tmp\wininet\compat.lua
- %User Temp%\ns{random}.tmp\wininet\core.lua
- %User Temp%\ns{random}.tmp\wininet\defs.lua
- %User Temp%\ns{random}.tmp\wininet\ftp.lua
- %User Temp%\ns{random}.tmp\wininet\http.lua
- %User Temp%\ns{random}.tmp\wininet\ltn12.lua
- %User Temp%\ns{random}.tmp\wininet\url.lua
- %User Temp%\ns{random}.tmp\wininet\wininet_h.lua
- %User Temp%\ns{random}.tmp\wininet\wintypes.lua
(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.)
Download Routine
This adware connects to the following URL(s) to download its configuration file:
- http://mirror.{BLOCKED}files.com/binstallers/BM2/filehelp/ipage/FreeFileOpener.mht
- http://mirror.{BLOCKED}files.com/products/BM2/combos/tidy_commondicitonary_optimizerpro_triple_628.mht
- http://mirror.{BLOCKED}files.com/products/BM2/combos/tidy_stormwatch_optimizerpro_triple_628_3.mht
- http://mirror.{BLOCKED}files.com/products/BM2/combos/tidy_stormwatch_systemoptimizerpro_628_3.mht
- http://mirror.{BLOCKED}files.com/products/BM2/combos/tidy_stormwatch_pcoptpro_628_3.mht
- http://mirror.{BLOCKED}files.com/products/BM2/combos/tidy_stormalerts_optimizerpro_triple_628_2.mht
- http://mirror.{BLOCKED}files.com/products/BM2/combos/searchsnacks_stormwatch_optimizerpro_triple_628_2.mht
- http://mirror.{BLOCKED}files.com/products/BM2/628/uniform/optimizerpro_tidy_double628.mht
- http://mirror.{BLOCKED}files.com/products/BM2/combos/stormwatch_tidy_double_628_3.mht
- http://mirror.{BLOCKED}files.com/products/BM2/combos/stormalerts_tidy_double628.mht
- http://mirror.{BLOCKED}files.com/products/BM2/combos/optimizerpro_stormwatch_combo_628_3.mht
- http://mirror.{BLOCKED}files.com/products/BM2/combos/optimizerpro_stormalerts_combo_628.mht
- http://mirror.{BLOCKED}files.com/products/BM2/TNT/ipage/findwide_icy628.mht
It saves the files it downloads using the following names:
- %User Temp%\ns{random}.tmp\1\FreeFileOpener.mht
- %User Temp%\ns{random}.tmp\19\tidy_commondicitonary_optimizerpro_triple_628.mht
- %User Temp%\ns{random}.tmp\22\tidy_stormwatch_optimizerpro_triple_628_3.mht
- %User Temp%\ns{random}.tmp\25\tidy_stormwatch_systemoptimizerpro_628_3.mht
- %User Temp%\ns{random}.tmp\28\tidy_stormwatch_pcoptpro_628_3.mht
- %User Temp%\ns{random}.tmp\31\tidy_stormalerts_optimizerpro_triple_628_2.mht
- %User Temp%\ns{random}.tmp\34\searchsnacks_stormwatch_optimizerpro_triple_628_2.mht
- %User Temp%\ns{random}.tmp\37\optimizerpro_tidy_double628.mht
- %User Temp%\ns{random}.tmp\39\stormwatch_tidy_double_628_3.mht
- %User Temp%\ns{random}.tmp\41\stormalerts_tidy_double628.mht
- %User Temp%\ns{random}.tmp\43\optimizerpro_stormwatch_combo_628_3.mht
- %User Temp%\ns{random}.tmp\45\optimizerpro_stormalerts_combo_628.mht
- %User Temp%\ns{random}.tmp\145\findwide_icy628.mht
(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 website to send and receive information:
- http://service.{BLOCKED}admin.com/install?s=FFO&brand=filehelp.com&pid=filehelp&bc={value}&country={region}
- http://service.{BLOCKED}admin.com/install?s=FFO&brand=filehelp.com&pid=filehelp&bc={value}&country={region}
- http://mirror.{BLOCKED}files.com/skins/da/06032014/megazord_skin_cancel.zip
- http://service.{BLOCKED}admin.com/env?s=FFO&brand=filehelp.com&pid=filehelp&bc={value}&country={region}
- http://service.{BLOCKED}admin.com/start?s=FFO&brand=filehelp.com&pid=filehelp&bc={value}&country={region}
NOTES:
This adware is an installer software which downloads other free software. it checks if the version of Internet Explorer browser installed on the affected computer is 7 or higher. If it is not, it displays the following message:
It connects to the following URLs to download and execute other software:
- http://cdn1.{BLOCKED}opener.com/FreeFileOpenerSetup.exe
- http://mirror.{BLOCKED}files.com/tnt2/freshy/FreshyToolbar.exe
- http://dl.{BLOCKED}vers.net/111001042/OptimizerPro.exe
- http://mirror.{BLOCKED}files.com/products/BM2/searchsnacks/exe/searchsnacks_932014.exe
- http://mirror.{BLOCKED}files.com/tn/TidyNetwork.exe
If the server where it gets its configurations and other data is unavailable, it displays the following message:
If all the conditions are met, this adware display its user interface containing offered software and its EULA:
It then starts the downloads and installation:
SOLUTION
9.700
1.550.35
22 Sep 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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Identify and terminate files detected as ADW_ADSHOW
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- 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.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 4
Search and delete these folders
- %User Temp%\ns{random}.tmp
Step 5
Scan your computer with your Trend Micro product to delete files detected as ADW_ADSHOW. 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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