ADW_WEBPROTECTOR
Windows
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
158,720 bytes
EXE
No
07 May 2015
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 files:
- %User Temp%\gp.up
- %User Temp%\ns{random}.tmp
- %User Temp%\ns{random}.tmp\nsProcess.dll
- %User Temp%\ns{random}.tmp\safed.dll
- %User Temp%\ns{random}.tmp\System.dll
- %User Temp%\sim{random}.tmp
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
It creates the following folders:
- %User Temp%\ns{random}.tmp
- %User Temp%\ns{random}.tmp\ffex
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Other System Modifications
This adware adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\WebProtectorPlus
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\WebProtectorPlus
gid = "{GUID}"
HKEY_LOCAL_MACHINE\SOFTWARE\WebProtectorPlus
sid = "{value}"
Other Details
This adware connects to the following possibly malicious URL:
- http://stat.{BLOCKED}tectionfree.com/pin.gif?e=download&s=&i={GUID}&v={data}
- http://{BLOCKED}tectionfree.com/b/WebProtectPI.exe
- http://stat.{BLOCKED}tectionfree.com/pin.gif?e=downloadsuc&s=&i={GUID}&v={data}
- http://stat.{BLOCKED}tectionfree.com/pin.gif?e=start&s={data}&i={GUID}&adv=&v={data}
- http://{BLOCKED}tectionfree.com/node/?s={data}&br=1
- http://{BLOCKED}tectionfree.com/node/?s={data}&br=2
- http://{BLOCKED}tectionfree.com/node/?s={data}&br=3
- http://{BLOCKED}tectionfree.com/node/?s={data}&br=4
- http://{BLOCKED}tectionfree.com/node/?s={data}&br=5
- http://stat.{BLOCKED}tectionfree.com/pin.gif?e=installer&s={data}&i={GUID}&adv=&v={data}
- http://stat.{BLOCKED}tectionfree.com/pin.gif?e=downloadend&s=&i={GUID}&v={data}&ec0
SOLUTION
9.750
1.623.00
14 May 2015
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
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE
- WebProtectorPlus
- WebProtectorPlus
Step 4
Search and delete these folders
- %User Temp%\ns{random}.tmp
Step 5
Search and delete this file
- %User Temp%\gp.up
- %User Temp%\ns{random}.tmp
- %User Temp%\ns{random}.tmp\nsProcess.dll
- %User Temp%\ns{random}.tmp\safed.dll
- %User Temp%\ns{random}.tmp\System.dll
- %User Temp%\sim{random}.tmp
Step 6
Scan your computer with your Trend Micro product to delete files detected as ADW_WEBPROTECTOR. 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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