PUA_CORNERSUNSHINE.GA
Adware.CornerSunshine (Symantec)
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. It may be manually installed by a user.
It connects to certain websites to send and receive information.
TECHNICAL DETAILS
1,755,896 bytes
EXE
No
01 Nov 2016
Connects to URLs/IPs, Displays graphics/image
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.
It may be manually installed by a user.
Installation
This potentially unwanted application creates the following folders:
- %Program Files%\Corner Sunshine\res
- %Program Files%\Corner Sunshine\res\picture
- %Program Files%\Corner Sunshine\res\picture\uninstall
- %Program Files%\Corner Sunshine\res\CN
- %Program Files%\Corner Sunshine\res\DE
- %Program Files%\Corner Sunshine\res\EN
- %Program Files%\Corner Sunshine\res\FR
(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)
Autostart Technique
This potentially unwanted application adds and runs the following services:
- CornerSunshineSvc
Other System Modifications
This potentially unwanted application adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
Corner Sunshine
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Corner Sunshine
HKEY_LOCAL_MACHINE\SOFTWARE\Corner Sunshine
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\CornerSunshineSvc
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Corner Sunshine
DisplayName = "Corner Sunshine"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Corner Sunshine
DisplayIcon = "%Program Files%\Corner Sunshine\CornerSunshineInst.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Corner Sunshine
UninstallString = "%Program Files%\Corner Sunshine\CornerSunshineInst.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Corner Sunshine
ProductVersion = "1.0.2"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Corner Sunshine
InstallLocation = "%Program Files%\Corner Sunshine"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Corner Sunshine
DisplayVersion = "1.0.2"
HKEY_LOCAL_MACHINE\SOFTWARE\Corner Sunshine
path = "%Program Files%\Corner Sunshine\"
HKEY_LOCAL_MACHINE\SOFTWARE\Corner Sunshine
channel = "official"
HKEY_LOCAL_MACHINE\SOFTWARE\Corner Sunshine
guid = "{GUID}"
HKEY_LOCAL_MACHINE\SOFTWARE\Corner Sunshine
wheref = "from-self"
HKEY_LOCAL_MACHINE\SOFTWARE\Corner Sunshine
InstTime = "{install time}"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\CornerSunshineSvc
Description = "The CornerSunshine service that aims to offer weather forcast "
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\CornerSunshineSvc
DisplayName = "CornerSunshineSvc"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\CornerSunshineSvc
ErrorControl = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\CornerSunshineSvc
FailureActions = "{hex values}"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\CornerSunshineSvc
ImagePath = ""%Program Files%\Corner Sunshine\CornerSunshineSvc.exe" {UID}"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\CornerSunshineSvc
ObjectName = "LocalSystem"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\CornerSunshineSvc
Start = "2" (SERVICE_AUTO_START)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\CornerSunshineSvc
Type = "272"
Dropping Routine
This potentially unwanted application drops the following files:
- %Program Files%\Corner Sunshine\CornerSunshine.exe
- %Program Files%\Corner Sunshine\CornerSunshineDll.dll
- %Program Files%\Corner Sunshine\CornerSunshineInst.exe
- %Program Files%\Corner Sunshine\CornerSunshineSvc.exe
- %Program Files%\Corner Sunshine\main
- %Program Files%\Corner Sunshine\res\CN\city_list_item.xml
- %Program Files%\Corner Sunshine\res\CN\UISkin1.xml
- %Program Files%\Corner Sunshine\res\CN\UISkin2.xml
- %Program Files%\Corner Sunshine\res\DE\city_list_item.xml
- %Program Files%\Corner Sunshine\res\DE\UISkin1.xml
- %Program Files%\Corner Sunshine\res\DE\UISkin2.xml
- %Program Files%\Corner Sunshine\res\EN\city_list_item.xml
- %Program Files%\Corner Sunshine\res\EN\UISkin1.xml
- %Program Files%\Corner Sunshine\res\EN\UISkin2.xml
- %Program Files%\Corner Sunshine\res\FR\city_list_item.xml
- %Program Files%\Corner Sunshine\res\FR\UISkin1.xml
- %Program Files%\Corner Sunshine\res\FR\UISkin2.xml
- %Program Files%\Corner Sunshine\res\picture\bg_main.png
- %Program Files%\Corner Sunshine\res\picture\bg_menu.png
- %Program Files%\Corner Sunshine\res\picture\bg_search.png
- %Program Files%\Corner Sunshine\res\picture\bg_user_guide.png
- %Program Files%\Corner Sunshine\res\picture\btn_cancel.png
- %Program Files%\Corner Sunshine\res\picture\btn_delete.png
- %Program Files%\Corner Sunshine\res\picture\btn_menu.png
- %Program Files%\Corner Sunchine\res\picture\btn_radio.png
- %Program Files%\Corner Sunchine\res\picture\clear.png
- %Program Files%\Corner Sunchine\res\picture\cloudy.png
- %Program Files%\Corner Sunchine\res\picture\cloudy_fg.png
- %Program Files%\Corner Sunchine\res\picture\fog.png
- %Program Files%\Corner Sunchine\res\picture\Humidity.png
- %Program Files%\Corner Sunchine\res\picture\icn_add.png
- %Program Files%\Corner Sunchine\res\picture\icn_fail.png
- %Program Files%\Corner Sunchine\res\picture\icn_info_grey.png
- %Program Files%\Corner Sunchine\res\picture\icn_location_gray.png
- %Program Files%\Corner Sunchine\res\picture\icn_precipitation.png
- %Program Files%\Corner Sunchine\res\picture\icn_success.png
- %Program Files%\Corner Sunchine\res\picture\icn_thermo.png
- %Program Files%\Corner Sunchine\res\picture\icn_units.png
- %Program Files%\Corner Sunchine\res\picture\Icon24_layout.png
- %Program Files%\Corner Sunchine\res\picture\Icon48_layout.png
- %Program Files%\Corner Sunchine\res\picture\img_degree.png
- %Program Files%\Corner Sunchine\res\picture\img_dot_normal.png
- %Program Files%\Corner Sunchine\res\picture\img_dot_selected.png
- %Program Files%\Corner Sunchine\res\picture\img_minus.png
- %Program Files%\Corner Sunchine\res\picture\img_num_0.png
- %Program Files%\Corner Sunchine\res\picture\img_num_1.png
- %Program Files%\Corner Sunchine\res\picture\img_num_2.png
- %Program Files%\Corner Sunchine\res\picture\img_num_3.png
- %Program Files%\Corner Sunchine\res\picture\img_num_4.png
- %Program Files%\Corner Sunchine\res\picture\img_num_5.png
- %Program Files%\Corner Sunchine\res\picture\img_num_6.png
- %Program Files%\Corner Sunchine\res\picture\img_num_7.png
- %Program Files%\Corner Sunchine\res\picture\img_num_8.png
- %Program Files%\Corner Sunchine\res\picture\img_num_9.png
- %Program Files%\Corner Sunchine\res\picture\overcast.png
- %Program Files%\Corner Sunchine\res\picture\rain.png
- %Program Files%\Corner Sunchine\res\picture\Refresh.png
- %Program Files%\Corner Sunchine\res\picture\scrollbar.png
- %Program Files%\Corner Sunchine\res\picture\sequence.png
- %Program Files%\Corner Sunchine\res\picture\snow.png
- %Program Files%\Corner Sunchine\res\picture\sunny.png
- %Program Files%\Corner Sunchine\res\picture\tstorm.png
- %Program Files%\Corner Sunchine\res\picture\windy.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\bg.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\btn.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\button.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\buttondown.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\checkbox.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\click.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\close.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\hover.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\normal.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\page1.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\page2.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\page3.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\page4.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\progress_back.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\progress_fore.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\uninstall.png
- %Program Files%\Corner Sunshine\res\picture\uninstall\uninstalldown.png
(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)
Other Details
This potentially unwanted application connects to the following website to send and receive information:
- http://deo74dnlruyj.{BLOCKED}ront.net/plg/up?qd=CornerSunshine&day=&qv=1.0.2&pd=official&lan=&qu={GUID}&os={OS version}&pi=&it={install time}
- http://d1x98kyej8b0kj.{BLOCKED}ront.net/v4/sunshine/{GUID}?action=cornersunshine.upgrade.checkstart
- http://api.{BLOCKED}sunshine.com/?key=autoip&lang={language}
- http://api.{BLOCKED}sunshine.com/?q=&lang=EN
- http://download.{BLOCKED}ch100.net/weather_animate/cloudy_E17E6047CF929E7EA4C815F67132B949.zip
- http://d1x98kyej8b0kj.{BLOCKED}ront.net/v4/sunshine/{GUID}?action=uninstall.cornersunshine.start
- http://d1x98kyej8b0kj.{BLOCKED}ront.net/v4/sunshine/{GUID}?action=install.cornersunshine.start
NOTES:
This PUA uninstalls itself on Windows XP and below.
It displays an icon on the corner of the taskbar.
It displays the following GUI when icon was clicked:
SOLUTION
9.800
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
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
Disable this malware service
-
- CornerSunshineSvc
Step 4
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\Clients
- Corner Sunshine
- Corner Sunshine
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
- Corner Sunshine
- Corner Sunshine
- In HKEY_LOCAL_MACHINE\SOFTWARE
- Corner Sunshine
- Corner Sunshine
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services
- CornerSunshineSvc
- CornerSunshineSvc
Step 5
Search and delete these folders
- %Program Files%\Corner Sunshine
Step 6
Scan your computer with your Trend Micro product to delete files detected as PUA_CORNERSUNSHINE.GA. 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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