- Threat Encyclopedia
- Malware
- Adware.Win32.NaviHelper.A
Windows
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.
377,928 bytes
EXE
No
18 Apr 2024
Drops files, 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.
Installation
This Adware drops the following files:
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %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).. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
It adds the following processes:
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %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 Adware adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch
download = %User Temp%\{Malware file name}
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update
Path = %Program Files%\Musicmatch\Musicmatch Update
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update
OEM = MMD
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update
Lang = DEU
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update
mmuid = {GUID}
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Subscriptions\DLM
UpdateStatus = 0
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Subscriptions\DLM
ChannelDir = %Program Files%\Musicmatch\Musicmatch Update\DLM
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Subscriptions\MMJB
UpdateStatus = 0
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Subscriptions\MMJB
ChannelDir = %Program Files%\Musicmatch\Musicmatch Update\MMJB
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Subscriptions\DLM
UpdateStatus = 2
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Subscriptions\MMJB
UpdateStatus = 2
It adds the following registry keys as part of its installation routine:
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
download
HKEY_LOCAL_MACHINE\software\Musicmatch\
Musicmatch Update
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Path
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\OEM
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Lang
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\mmuid
HKEY_LOCAL_MACHINE\software\Musicmatch\
Musicmatch Update\Subscriptions
HKEY_LOCAL_MACHINE\software\Musicmatch\
Musicmatch Update\Subscriptions\DLM
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Subscriptions\DLM\
UpdateStatus
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Subscriptions\DLM\
ChannelDir
HKEY_LOCAL_MACHINE\software\Musicmatch\
Musicmatch Update\Subscriptions\MMJB
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Subscriptions\MMJB\
UpdateStatus
HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\
Musicmatch Update\Subscriptions\MMJB\
ChannelDir
9.800
2.721.00
18 Apr 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 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.
Step 4
Delete this registry value
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.
Step 5
Search and delete these files
Step 6
Scan your computer with your Trend Micro product to delete files detected as Adware.Win32.NaviHelper.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 the following Trend Micro Support pages for more information: