ADW_BETTERSURF.UNP

December 10, 2019
 PLATFORM:

Windows

 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.

  TECHNICAL DETAILS

File Size:

87,040 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

28 Nov 2019

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.

Other System Modifications

This Adware adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
explorer\Browser Helper Objects\{{GUID}}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
Version

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}\
ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}\
TypeLib

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
explorer\Browser Helper Objects\{{GUID}}
(Default) = "MediaWatchV1home8821"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
explorer\Browser Helper Objects\{{GUID}}
NoExplorer = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}
(Default) = "MediaWatchV1home8821"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
InprocServer32
(Default) = "%User Temp%\{malware file name}.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
TypeLib
(Default) = "{{GUID}}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{{GUID}}\
Version
(Default) = "1.1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}
(Default) = "IMediaWatchV1home8821BHO"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}\
ProxyStubClsid32
(Default) = "{00020424-0000-0000-C000-000000000046}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}\
TypeLib
(Default) = "{3D51CFBD-6254-4D3A-B459-8811B192F47F}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}\
TypeLib
Version = "1.1"

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.850

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

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\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects
    • {{GUID}}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID
    • {{GUID}}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
    • Version
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface
    • {C227421C-55AA-4D8D-BDC9-B235145AD0A1}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}
    • TypeLib

Step 3

Delete this registry value

[ 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\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{{GUID}}
    • (Default) = "MediaWatchV1home8821"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{{GUID}}
    • NoExplorer = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}
    • (Default) = "MediaWatchV1home8821"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}\InprocServer32
    • (Default) = "%User Temp%\{malware file name}.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}\TypeLib
    • (Default) = "{{GUID}}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{{GUID}}\Version
    • (Default) = "1.1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}
    • (Default) = "IMediaWatchV1home8821BHO"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}\ProxyStubClsid32
    • (Default) = "{00020424-0000-0000-C000-000000000046}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}\TypeLib
    • (Default) = "{3D51CFBD-6254-4D3A-B459-8811B192F47F}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C227421C-55AA-4D8D-BDC9-B235145AD0A1}\TypeLib
    • Version = "1.1"

Step 4

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