Analysis by: Paul Steven Nadera
 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Potentially Unwanted Application

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet

This Potentially Unwanted Application 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 does not have any propagation routine.

It does not have any backdoor routine.

It does not have any downloading capability.

It does not have any proxy server routine.

It does not have any information-stealing capability.

  TECHNICAL DETAILS

File Size: 1,022,047 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 07 Apr 2020
Payload: Displays windows

Arrival Details

This Potentially Unwanted Application 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 Potentially Unwanted Application adds the following processes:

  • "%Program Files%\webrec\WEB30\WebPlugin\WebActiveEXE.exe" /regserver
  • "%Program Files%\webrec\WEB30\WebPlugin\TimeGridEXE.exe" /regserver
  • regsvr32 /s "atl.dll"

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other System Modifications

This Potentially Unwanted Application adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\
@DVR/npmedia,version=3.1.0.4
Path = "%Program Files%\webrec\WEB30\WebPlugin\npmedia.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\
@DVR/npTimeGrid,version=3.1.0.4
Path = "%Program Files%\webrec\WEB30\WebPlugin\npTimeGrid.dll"

Propagation

This Potentially Unwanted Application does not have any propagation routine.

Backdoor Routine

This Potentially Unwanted Application does not have any backdoor routine.

Rootkit Capabilities

This Potentially Unwanted Application does not have rootkit capabilities.

Dropping Routine

This Potentially Unwanted Application drops the following files:

  • %Program Files%\webrec\WEB30\WebPlugin\dhnetsdk.dll
  • %Program Files%\webrec\WEB30\WebPlugin\dhplay.dll
  • %Program Files%\webrec\WEB30\WebPlugin\DHSurveillanceDll.dll
  • %Program Files%\webrec\WEB30\WebPlugin\h264dec.dll
  • %Program Files%\webrec\WEB30\WebPlugin\mjpegdec.dll
  • %Program Files%\webrec\WEB30\WebPlugin\npmedia.dll
  • %Program Files%\webrec\WEB30\WebPlugin\npTimeGrid.dll
  • %Program Files%\webrec\WEB30\WebPlugin\postproc.dll
  • %Program Files%\webrec\WEB30\WebPlugin\timeAxesDll.dll
  • %Program Files%\webrec\WEB30\WebPlugin\TimeGridEXE.exe
  • %Program Files%\webrec\WEB30\WebPlugin\VideoWindow.dll
  • %Program Files%\webrec\WEB30\WebPlugin\WebActiveEXE.exe
  • %Program Files%\webrec\WEB30\WebPlugin\Version.ini
  • %Start Menu%\Programs\WebPlugin\Uninstall.lnk
  • %Program Files%\webrec\WEB30\WebPlugin\uninst.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Download Routine

This Potentially Unwanted Application does not have any downloading capability.

Proxy Server Routine

This Potentially Unwanted Application does not have any proxy server routine.

Information Theft

This Potentially Unwanted Application does not have any information-stealing capability.

Other Details

This Potentially Unwanted Application adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\
@DVR/npmedia,version=3.1.0.4

HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\
@DVR/npTimeGrid,version=3.1.0.4

NOTES:

It does the following:

  • It shows the following progress bar once executed:


It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine: 9.850
SSAPI PATTERN File: 2.278.00
SSAPI PATTERN Date: 09 Apr 2020

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 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

[ Learn More ]

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\MozillaPlugins
    • @DVR/npmedia,version = 3.1.0.4
  • In HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins
    • @DVR/npTimeGrid,version = 3.1.0.4

Step 4

Search and delete these files

[ Learn More ]
There may be some 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.
  • %Program Files%\webrec\WEB30\WebPlugin\dhnetsdk.dll
  • %Program Files%\webrec\WEB30\WebPlugin\dhplay.dll
  • %Program Files%\webrec\WEB30\WebPlugin\DHSurveillanceDll.dll
  • %Program Files%\webrec\WEB30\WebPlugin\h264dec.dll
  • %Program Files%\webrec\WEB30\WebPlugin\mjpegdec.dll
  • %Program Files%\webrec\WEB30\WebPlugin\npmedia.dll
  • %Program Files%\webrec\WEB30\WebPlugin\npTimeGrid.dll
  • %Program Files%\webrec\WEB30\WebPlugin\postproc.dll
  • %Program Files%\webrec\WEB30\WebPlugin\timeAxesDll.dll
  • %Program Files%\webrec\WEB30\WebPlugin\TimeGridEXE.exe
  • %Program Files%\webrec\WEB30\WebPlugin\VideoWindow.dll
  • %Program Files%\webrec\WEB30\WebPlugin\WebActiveEXE.exe
  • %Program Files%\webrec\WEB30\WebPlugin\Version.ini
  • %Start Menu%\Programs\WebPlugin\Uninstall.lnk
  • %Program Files%\webrec\WEB30\WebPlugin\uninst.exe

Step 5

Scan your computer with your Trend Micro product to delete files detected as PUA.Win32.WebPlugin.GA. 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 the following Trend Micro Support pages for more information:


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