Analysis by: Jimelle Monteser
ALIASES:

AdWare.Win32.AddLyrics (Ikarus), Adware:Win32/AddLyrics (Microsoft)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This adware may arrive bundled with malware packages as a malware component. It 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: 149,504 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 28 Feb 2014

Arrival Details

This adware may arrive bundled with malware packages as a malware component.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Autostart Technique

This adware adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
InprocServer32
Default = "{malware path}\{filename}.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\InprocServer32
Default = "{malware path}\{filename}.dll"

It adds the following registry keys to install itself as a Browser Helper Object (BHO):

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}

It adds the following registry entries to install itself as a Browser Helper Object (BHO):

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}
Default = "PassShow"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}
NoExplorer = "1"

Other System Modifications

This adware adds the following registry keys:

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
Implemented Categories

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
Implemented Categories\{59fb2056-d625-48d0-a944-1a85b5ab2640}

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
InprocServer32

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
Programmable

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
TypeLib

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
Version

HKEY_CLASSES_ROOT\Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}

HKEY_CLASSES_ROOT\Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\
ProxyStubClsid

HKEY_CLASSES_ROOT\Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\
ProxyStubClsid32

HKEY_CLASSES_ROOT\Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\
TypeLib

HKEY_CLASSES_ROOT\TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}

HKEY_CLASSES_ROOT\TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\
1.0

HKEY_CLASSES_ROOT\TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\
1.0\0

HKEY_CLASSES_ROOT\TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\
1.0\0\win32

HKEY_CLASSES_ROOT\TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\
1.0\FLAGS

HKEY_CLASSES_ROOT\TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\
1.0\HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\Implemented Categories

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\Implemented Categories\
{59fb2056-d625-48d0-a944-1a85b5ab2640}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\Version

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\1.0\
HELPDIR

It adds the following registry entries:

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}
Default = "PassShow"

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
Implemented Categories
Default = ""

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
Implemented Categories\{59fb2056-d625-48d0-a944-1a85b5ab2640}
Default = ""

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
InprocServer32
ThreadingModel = "Apartment"

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
TypeLib
Default = "{04e2b965-08d5-45ff-8f70-8c4cf5fbe3c3}"

HKEY_CLASSES_ROOT\CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\
Version
Default = "1.0"

HKEY_CLASSES_ROOT\Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}
Default = "IInjectObject"

HKEY_CLASSES_ROOT\Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\
ProxyStubClsid
Default = "{00020424-0000-0000-C000-000000000046}"

HKEY_CLASSES_ROOT\Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\
ProxyStubClsid32
Default = "{00020424-0000-0000-C000-000000000046}"

HKEY_CLASSES_ROOT\Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\
TypeLib
Default = "{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}"

HKEY_CLASSES_ROOT\Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\
TypeLib
Version = "1.0"

HKEY_CLASSES_ROOT\TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\
1.0
Default = "IEInjectLib"

HKEY_CLASSES_ROOT\TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\
1.0\0\win32
Default = "{malware path}\{filename}.dll"

HKEY_CLASSES_ROOT\TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\
1.0\FLAGS
Default = "0"

HKEY_CLASSES_ROOT\TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\
1.0\HELPDIR
Default = "{malware path}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}
Default = "PassShow"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\Implemented Categories
Default = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\Implemented Categories\
{59fb2056-d625-48d0-a944-1a85b5ab2640}
Default = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\TypeLib
Default = "{04e2b965-08d5-45ff-8f70-8c4cf5fbe3c3}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0d97db6b-c9b0-4c07-98b7-818628ab37e2}\Version
Default = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}
Default = "IInjectObject"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\ProxyStubClsid
Default = "{00020424-0000-0000-C000-000000000046}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\ProxyStubClsid32
Default = "{00020424-0000-0000-C000-000000000046}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\TypeLib
Default = "{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\1.0
Default = "IEInjectLib"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\1.0\
0\win32
Default = "{malware path}\{filename}.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\1.0\
FLAGS
Default = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}\1.0\
HELPDIR
Default = "{malware path}"

  SOLUTION

Minimum Scan Engine: 9.700
FIRST VSAPI PATTERN FILE: 10.634.06
FIRST VSAPI PATTERN DATE: 01 Mar 2014
VSAPI OPR PATTERN File: 10.635.00
VSAPI OPR PATTERN Date: 01 Mar 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

Restart in Safe Mode

[ Learn More ]

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_CLASSES_ROOT\CLSID
    • {0d97db6b-c9b0-4c07-98b7-818628ab37e2}
  • In HKEY_CLASSES_ROOT\Interface
    • {1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}
  • In HKEY_CLASSES_ROOT\TypeLib
    • {04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {0d97db6b-c9b0-4c07-98b7-818628ab37e2}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {1E4D92E5-C11F-4CDC-9FEB-A5016CF8805E}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
    • {04E2B965-08D5-45FF-8F70-8C4CF5FBE3C3}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
    • {0d97db6b-c9b0-4c07-98b7-818628ab37e2}

Step 4

Restart in normal mode and scan your computer with your Trend Micro product for files detected as BREX_ADDLYRICS.A. 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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