PUA.Win32.Softcnapp.MPDXP
Riskware/Sogou (FORTINET)
Windows
Threat Type: Potentially Unwanted Application
Destructiveness: No
Encrypted:
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.
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:
- %User Temp%\nsvEF0F.tmp
- %User Temp%\nsoF169.tmp
- %User Temp%\nsiF174.tmp
- %User Temp%\nsiF174.tmp\HWSignature.dll
- %User Temp%\nsiF174.tmp\SetupUi.cupf
- %User Temp%\nsiF174.tmp\SetupLib.dll
- %User Temp%\nsiF174.tmp\System.dll
- %User Temp%\nsiF174.tmp\install0.bmp
- %User Temp%\nsiF174.tmp\install1.bmp
- %User Temp%\nsiF174.tmp\install2.bmp
- %User Temp%\nsiF174.tmp\install3.bmp
- %User Temp%\nsiF174.tmp\seversion.txt
- %User Temp%\nsiF174.tmp\sepush.gif
- %User Temp%\nsiF174.tmp\validate.ini
- %User Temp%\nsiF174.tmp\ioSpecial.ini
- %User Temp%\nsiF174.tmp\modern-wizard.bmp
- %User Temp%\nsiF174.tmp\modern-header.bmp
- %User Temp%\nsiF174.tmp\InstallOptions.dll
(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).)
It creates the following folders:
- %User Temp%\nsiF174.tmp
(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).)
Other System Modifications
This Potentially Unwanted Application deletes the following files:
- %User Temp%\nsvEF0F.tmp
- %User Temp%\nsiF174.tmp
(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).)
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
RFC1156Agent\CurrentVersion\Parameters
TrapPollTimeMilliSecs = 15000
HKEY_CURRENT_USER\Software\SogouInput
StartMenu = 1
HKEY_LOCAL_MACHINE\SOFTWARE\SogouInput
ImeHint = 0
HKEY_LOCAL_MACHINE\SOFTWARE\SogouInput.user
ImeHint = 0
HKEY_LOCAL_MACHINE\SOFTWARE\SogouInput.user.bak
ImeHint = 0
HKEY_LOCAL_MACHINE\SOFTWARE\SogouComponents
(Default) = C:\Program Files\SogouInput\Components
Download Routine
This Potentially Unwanted Application connects to the following URL(s) to download its component file(s):
- http://config.ie.{BLOCKED}u.com/seversion.txt?v=6.7.0.0163&h=FA1DEBBFF8563717DF421600D9C3E45A&r=0000_sogou_pinyin_67&a=checknet&tid=0
- http://ping.ie.{BLOCKED}u.com/imepush.png?v=6.7.0.0163&h=FA1DEBBFF8563717DF421600D9C3E45A&r=0000_sogou_pinyin_67&type=arrive&tid=0
- http://pinyin.{BLOCKED}u.com/client/validateinstall.php?v=6.7.0.0163&h=FA1DEBBFF8563717DF421600D9C3E45A&r=0000_sogou_pinyin_67&pp=&mode=0
Other Details
This Potentially Unwanted Application adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\Microsoft\
RFC1156Agent
HKEY_LOCAL_MACHINE\Software\Microsoft\
RFC1156Agent\CurrentVersion\Parameters
HKEY_CURRENT_USER\Software\SogouInput
HKEY_LOCAL_MACHINE\SOFTWARE\SogouInput
HKEY_LOCAL_MACHINE\SOFTWARE\SogouInput.user
HKEY_LOCAL_MACHINE\SOFTWARE\SogouInput.user.bak
HKEY_LOCAL_MACHINE\SOFTWARE\SogouComponents
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{4D6DE936-912B-4aa1-A167-38A29A691337}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{C7F9CD7C-5AC6-470b-A50F-F7CC28D0771B}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{7AF645B2-3F1F-4639-81A1-39D794DC8A7D}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{C7F9CD7C-5AC6-470b-A50F-F7CC28D0771C}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.ssf
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SogouSkinFile
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CC43AF26-60C3-4612-B58D-27A07A40E90B}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
CTF\TIP\{CC43AF26-60C3-4612-B58D-27A07A40E90B}
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 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.
- In HKEY_LOCAL_MACHINE\Software\Microsoft\
- RFC1156Agent
- RFC1156Agent
- In HKEY_LOCAL_MACHINE\Software\Microsoft\RFC1156Agent\CurrentVersion\
- Parameters
- Parameters
- In HKEY_CURRENT_USER\Software\
- SogouInput
- SogouInput
- In HKEY_LOCAL_MACHINE\SOFTWARE\
- SogouInput
- SogouInput
- In HKEY_LOCAL_MACHINE\SOFTWARE\
- SogouInput.user
- SogouInput.user
- In HKEY_LOCAL_MACHINE\SOFTWARE\
- SogouInput.user.bak
- SogouInput.user.bak
- In HKEY_LOCAL_MACHINE\SOFTWARE\
- SogouComponents
- SogouComponents
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\
- {4D6DE936-912B-4aa1-A167-38A29A691337}
- {4D6DE936-912B-4aa1-A167-38A29A691337}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\
- {C7F9CD7C-5AC6-470b-A50F-F7CC28D0771B}
- {C7F9CD7C-5AC6-470b-A50F-F7CC28D0771B}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\
- {7AF645B2-3F1F-4639-81A1-39D794DC8A7D}
- {7AF645B2-3F1F-4639-81A1-39D794DC8A7D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\
- {C7F9CD7C-5AC6-470b-A50F-F7CC28D0771C}
- {C7F9CD7C-5AC6-470b-A50F-F7CC28D0771C}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
- .ssf
- .ssf
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
- SogouSkinFile
- SogouSkinFile
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\
- {CC43AF26-60C3-4612-B58D-27A07A40E90B}
- {CC43AF26-60C3-4612-B58D-27A07A40E90B}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\CTF\TIP\
- {CC43AF26-60C3-4612-B58D-27A07A40E90B}
- {CC43AF26-60C3-4612-B58D-27A07A40E90B}
Step 4
Search and delete this file
- %User Temp%\nsvEF0F.tmp
- %User Temp%\nsoF169.tmp
- %User Temp%\nsiF174.tmp
- %User Temp%\nsiF174.tmp\HWSignature.dll
- %User Temp%\nsiF174.tmp\SetupUi.cupf
- %User Temp%\nsiF174.tmp\SetupLib.dll
- %User Temp%\nsiF174.tmp\System.dll
- %User Temp%\nsiF174.tmp\install0.bmp
- %User Temp%\nsiF174.tmp\install1.bmp
- %User Temp%\nsiF174.tmp\install2.bmp
- %User Temp%\nsiF174.tmp\install3.bmp
- %User Temp%\nsiF174.tmp\seversion.txt
- %User Temp%\nsiF174.tmp\sepush.gif
- %User Temp%\nsiF174.tmp\validate.ini
- %User Temp%\nsiF174.tmp\ioSpecial.ini
- %User Temp%\nsiF174.tmp\modern-wizard.bmp
- %User Temp%\nsiF174.tmp\modern-header.bmp
- %User Temp%\nsiF174.tmp\InstallOptions.dll
Step 5
Search and delete these folders
Step 6
Scan your computer with your Trend Micro product to delete files detected as PUA.Win32.Softcnapp.MPDXP. 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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