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Adware.Win32.Burden.R002C0XB724

February 23, 2024
 Analysis by: Raymart Christian Yambot
 ALIASES:

HEUR:AdWare.Win32.Burden.gen (KASPERSKY)

 PLATFORM:

Windows

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

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

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.

  TECHNICAL DETAILS

File Size:

224,736 bytes

File Type:

DLL

Memory Resident:

No

Initial Samples Received Date:

16 Feb 2024

Payload:

Modifies system registry

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 entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{GUID}\InprocServer32
(Default) = {Malware file path}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{GUID}\1.0\
HELPDIR
(Default) = {Malware directory}

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

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{GUID}\1.0\
0\win32
(Default) = {Malware file path}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{GUID}\ProxyStubClsid
(Default) = {GUID}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{GUID}\ProxyStubClsid32
(Default) = {GUID}

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

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{GUID}\1.0
(Default) = OverlayIcon 1.0 Type Library

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{GUID}\1.0\
FLAGS
(Default) = 0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{GUID}\TypeLib
(Default) = {GUID}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{GUID}\TypeLib
Version = 1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\{GUID}
(Default) = OverlayIcon

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\OverlayIcon.DLL
AppID = {GUID}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{GUID}
AppID = {GUID}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{GUID}
AppID = {GUID}

Other Details

This Adware adds the following registry keys:

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

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{GUID}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{GUID}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{GUID}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\OverlayIcon.DLL

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{GUID}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{GUID}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{GUID}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{GUID}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{GUID}\1.0

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

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

2.704.06

FIRST VSAPI PATTERN DATE:

22 Feb 2024

VSAPI OPR PATTERN File:

2.705.00

VSAPI OPR PATTERN Date:

23 Feb 2024

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 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\Classes\CLSID\{GUID}\InprocServer32
    • (Default)= {Malware file path}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{GUID}\InprocServer32
    • ThreadingModel = Apartment
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{GUID}\1.0\HELPDIR
    • (Default)= {Malware directory}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{GUID}\1.0\0\win32
    • (Default) = {Malware file path}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{GUID}\ProxyStubClsid
    • (Default) = {GUID}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{GUID}\ProxyStubClsid32
    • (Default) = {GUID}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{GUID}\TypeLib
    • (Default) = {GUID}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{GUID}\1.0
    • (Default) = OverlayIcon 1.0 Type Library
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{GUID}\1.0\FLAGS
    • (Default) = 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{GUID}\TypeLib
    • (Default) = {GUID}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{GUID}\TypeLib
    • Version = 1.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\{GUID}
    • (Default) = OverlayIcon
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\OverlayIcon.DLL
    • AppID = {GUID}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{GUID}
    • AppID = {GUID}

Step 4

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\Classes\AppID\
    • OverlayIcon.DLL
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{GUID}\
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{GUID}\
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{GUID}\
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{GUID}\1.0\
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{GUID}\1.0\0\
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{GUID}\1.0\
    • FLAGS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{GUID}\
    • 1.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{GUID}\1.0\0\
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{GUID}\1.0\
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{GUID}\
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{GUID}\
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{GUID}\
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\
    • {GUID}

Step 5

Scan your computer with your Trend Micro product to delete files detected as Adware.Win32.Burden.R002C0XB724. 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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