PUA.Win32.2345Soft.JCH
a variant of Win32/2345.H potentially unwanted application (NOD32)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Potentially Unwanted Application
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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.
It connects to certain websites to send and receive information.
TECHNICAL DETAILS
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:
- %Application Data%\Helper_2345\temp\download\0\Helper_2345.NewVersion.data
- %Application Data%\Helper_2345\temp\Helper_2345.CheckVersion.data
- %Application Data%\Helper_2345\Statistics\helper_statistic.lock
- %Application Data%\Helper_2345\Statistics\helper_statistic
- %Application Data%\Helper_2345\Statistics\helper_statistic.time
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Other System Modifications
This Potentially Unwanted Application adds the following registry entries as part of its installation routine:
HKEY_CURRENT_USER\Software\2345.com
UUID = {Generated ID} {Random number}
HKEY_CURRENT_USER\Software\2345.com\
Helper_2345
LADValue = {Random number} {Random number}
HKEY_CURRENT_USER\Software\2345.com\
Helper_2345
ADValue = {Random number} {Random number}
Download Routine
This Potentially Unwanted Application saves the files it downloads using the following names:
- %Application Data%\Helper_2345\temp\download\0\HelperMain4.5.0.1589.dat
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Other Details
This Potentially Unwanted Application connects to the following website to send and receive information:
- http://update.helper.{BLOCKED}5.cc/ie/index.php
- http://t.helper.{BLOCKED}5.cc/helper/helper.php
It does the following:
- It connects to the following URL to download a file:
- http://helper.{BLOCKED}dn.net/2345helper/HelperMain4.5.0.1589.dat
SOLUTION
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
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_CURRENT_USER\Software\2345.com
- UUID = {Generated ID} {Random number}
- UUID = {Generated ID} {Random number}
- In HKEY_CURRENT_USER\Software\2345.com\Helper_2345
- LADValue = {Random number} {Random number}
- LADValue = {Random number} {Random number}
- In HKEY_CURRENT_USER\Software\2345.com\Helper_2345
- ADValue = {Random number} {Random number}
- ADValue = {Random number} {Random number}
Step 4
Search and delete this file
- %Application Data%\Helper_2345\temp\download\0\Helper_2345.NewVersion.data
- %Application Data%\Helper_2345\temp\Helper_2345.CheckVersion.data
- %Application Data%\Helper_2345\Statistics\helper_statistic.lock
- %Application Data%\Helper_2345\Statistics\helper_statistic
- %Application Data%\Helper_2345\Statistics\helper_statistic.time
- %Application Data%\Helper_2345\temp\download\0\HelperMain4.5.0.1589.dat
Step 5
Scan your computer with your Trend Micro product to delete files detected as PUA.Win32.2345Soft.JCH. 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:
Did this description help? Tell us how we did.