PUA.Win32.SaveNow.FNTBL
AdWare.Win32.SaveNow.bg (KASPERSKY)
Windows

Threat Type: Potentially Unwanted Application
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Dropped by other malware, 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.
TECHNICAL DETAILS
112,128 bytes
EXE
No
12 May 2020
Modifies system registry
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.
Installation
This Potentially Unwanted Application drops the following files:
- %Program Files%\SaveNow\ReadMe.txt
- %Program Files%\SaveNow\savenow.htm
- %Program Files%\SaveNow\Uninst.exe
- %User Temp%\SaveNow.cab
- %User Temp%\SaveNow.inf
- %Program Files%\SaveNow\SaveNow.exe (detected as Adware.Win32.SaveNow.VLC)
Autostart Technique
This Potentially Unwanted Application modifies the following registry entries to ensure it automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
SaveNow = %Program Files%\SaveNow\SaveNow.exe
Other System Modifications
This Potentially Unwanted Application adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SaveNow
DisplayName = SaveNow
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SaveNow
DisplayVersion = 1.4
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SaveNow
HelpLink = www.{BLOCKED}u.com
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SaveNow
Publisher = {BLOCKED}U.com, Inc.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SaveNow
UninstallString = %Program Files%\SaveNow\Uninst.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SaveNow
DisplayIcon = %Program Files%\SaveNow\SaveNow.exe,-0
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SaveNow
UrlInfoAbout = www.{BLOCKED}u.com
HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\
SaveNow
db_local_update = 0
HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\
SaveNow
db_script_update = {Random number}
HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\
SaveNow
InstallDir = %Program Files%\SaveNow
HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\
SaveNow
pats_url = http://a1964.g.{BLOCKED}i.net/f/1964/2730/1h/app.{BLOCKED}u.com/OffersData
HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\
SaveNow
script_url =
HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\
SaveNow
update_url = http://a1964.g.{BLOCKED}i.net/f/1964/2730/1d/web.{BLOCKED}u.com/savenowupdate.exe
HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\
SaveNow
update_url = http://a1964.g.{BLOCKED}i.net/f/1964/2730/1d/web.{BLOCKED}u.com/savenowupdate.exe
HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\
SaveNow
Version = 1.4
SOLUTION
9.850
2.287.00
14 May 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
Restart in Safe Mode
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.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- SaveNow = %Program Files%\SaveNow\SaveNow.exe
- SaveNow = %Program Files%\SaveNow\SaveNow.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SaveNow
- DisplayIcon = %Program Files%\SaveNow\SaveNow.exe,-0
- DisplayIcon = %Program Files%\SaveNow\SaveNow.exe,-0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SaveNow
- DisplayName = SaveNow
- DisplayName = SaveNow
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SaveNow
- DisplayVersion = 1.4
- DisplayVersion = 1.4
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SaveNow
- HelpLink = www.{BLOCKED}u.com
- HelpLink = www.{BLOCKED}u.com
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SaveNow
- Publisher = {BLOCKED}U.com, Inc.
- Publisher = {BLOCKED}U.com, Inc.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SaveNow
- UninstallString = %Program Files%\SaveNow\Uninst.exe
- UninstallString = %Program Files%\SaveNow\Uninst.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SaveNow
- UrlInfoAbout = www.{BLOCKED}u.com
- UrlInfoAbout = www.{BLOCKED}u.com
- In HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\SaveNow
- db_local_update = 0
- db_local_update = 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\SaveNow
- db_script_update = {Random number}
- db_script_update = {Random number}
- In HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\SaveNow
- InstallDir = %Program Files%\SaveNow
- InstallDir = %Program Files%\SaveNow
- In HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\SaveNow
- pats_url = http://a1964.g.{BLOCKED}i.net/f/1964/2730/1h/app.whenu.com/OffersData
- pats_url = http://a1964.g.{BLOCKED}i.net/f/1964/2730/1h/app.whenu.com/OffersData
- In HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\SaveNow
- script_url = http://a1964.g.{BLOCKED}i.net/f/1964/2730/1h/web.whenu.com/offscript2.html
- script_url = http://a1964.g.{BLOCKED}i.net/f/1964/2730/1h/web.whenu.com/offscript2.html
- In HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\SaveNow
- update_url = http://a1964.g.{BOCKED}i.net/f/1964/2730/1d/web.whenu.com/savenowupdate.exe
- update_url = http://a1964.g.{BOCKED}i.net/f/1964/2730/1d/web.whenu.com/savenowupdate.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\WhenU\SaveNow
- Version = 1.4
- Version = 1.4
Step 5
Search and delete this file
- %Program Files%\SaveNow\ReadMe.txt
- %Program Files%\SaveNow\SaveNow.exe
- %Program Files%\SaveNow\savenow.htm
- %Program Files%\SaveNow\Uninst.exe
- %User Temp%\SaveNow.cab
- %User Temp%\SaveNow.inf
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as PUA.Win32.SaveNow.FNTBL. 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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