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PUA_TOPTOOLS.GA

May 09, 2017
 Analysis by: Byron Jon Gelera
 ALIASES:

Riskware/Toptools (Fortinet); PUA.Toptools (Ikarus)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Potenitally Unwanted Application

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Potenitally 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.

  TECHNICAL DETAILS

File Size:

855,336 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

12 Jan 2017

Arrival Details

This Potenitally 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 Potenitally Unwanted Application adds the following folders:

  • %User Temp%\ns{random}.tmp
  • %Program Files%\WeatherTool\2.0.1.5000005
  • %Program Files%\Baidu\update
  • %All Users Profile%\Application Data\baidu\update

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %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.. %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It drops the following files:

  • %User Temp%\82697b28412b908f21d5413e81060bed\3033250.exe
  • %User Temp%\ns{random}.tmp\System.dll
  • %User Temp%\ns{random}.tmp.exe
  • %Program Files%\WeatherTool\2.0.1.5000005\res\BR\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\BR\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\CN\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\CN\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\DE\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\DE\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\EN\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\EN\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\FR\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\FR\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\JP\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\JP\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\JP\skin3.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\TH\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\TH\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\BR\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\BR\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\CN\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\CN\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\DE\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\DE\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\EN\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\EN\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\FR\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\FR\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\JP\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\JP\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\JP\skin3.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\TH\skin.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\XP\TH\skin2.xml
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\Humidity.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\Icon24_layout.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\Icon48_layout.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\Refresh.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\accuweather_logo.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\bg_main.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\bg_menu.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\bg_search.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\bg_user_guide.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\btn_cancel.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\btn_delete.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\btn_menu.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\btn_radio.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\clear.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\cloudy.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\cloudy_fg.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\fog.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\icn_add.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\icn_fail.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\icn_info_grey.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\icn_location_gray.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\icn_precipitation.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\icn_success.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\icn_thermo.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\icn_units.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_degree.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_dot_normal.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_dot_selected.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_minus.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_num_0.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_num_1.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_num_2.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_num_3.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_num_4.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_num_5.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_num_6.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_num_7.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_num_8.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\img_num_9.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\overcast.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\rain.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\scrollbar.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\sequence.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\snow.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\sunny.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\tstorm.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\windy.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\bg.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\btn.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\button.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\buttondown.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\checkbox.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\click.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\close.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\hover.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\normal.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\page1.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\page2.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\page3.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\page4.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\progress_back.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\progress_fore.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\uninstall.png
  • %Program Files%\WeatherTool\2.0.1.5000005\res\picture\uninstall\uninstalldown.png
  • %Program Files%\WeatherTool\2.0.1.5000005\WeatherEntryDll.dll
  • %Program Files%\WeatherTool\2.0.1.5000005\weather.exe
  • %Program Files%\WeatherTool\2.0.1.5000005\InstallHelper.exe
  • %Program Files%\WeatherTool\2.0.1.5000005\CrashReport.exe
  • %Program Files%\WeatherTool\2.0.1.5000005\CrashUL.exe
  • %Program Files%\WeatherTool\2.0.1.5000005\CrashReportModuleConf.ini
  • %Program Files%\WeatherTool\2.0.1.5000005\Updata.dll
  • %Program Files%\WeatherTool\2.0.1.5000005\updata.ini
  • %Program Files%\WeatherTool\2.0.1.5000005\UpdatePlatformJP.exe
  • %Program Files%\WeatherTool\2.0.1.5000005\Report.exe
  • %Program Files%\WeatherTool\2.0.1.5000005\WeatherService.exe
  • %Application Data%\WeatherTool\dump\BugReportConfig.ini
  • %Program Files%\Baidu\update\UpdatePlatform.exe
  • %Program Files%\Baidu\update\CrashReport.exe
  • %Program Files%\Baidu\update\CrashReport64.exe
  • %Program Files%\Baidu\update\CrashUL.exe
  • %Program Files%\Baidu\update\CrashReportModuleConf.ini
  • %Program Files%\Baidu\update\CrashReportConfig.ini
  • %Program Files%\Baidu\update\baidujp_update.exe
  • %Windows%\Tasks\BaiduJP_Update_{8099779F-A13B-403e-B39A-65133857586B}.job
  • %All Users Profile%\Documents\Baidu\Common\I18N\conf.db
  • %User Temp%\ns{random}.tmp\System.dll
  • %All Users Profile%\Application Data\baidu\update\download\baidujp_update.xml
  • %All Users Profile%\Application Data\baidu\update\baidujp_update.ini

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %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.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other System Modifications

This Potenitally Unwanted Application adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
update

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool\
QUIT
QuitSession = {F9C18A54-613A-4878-A097-C8E108698E7D}-1

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool\
Settings
ProductType = ""

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool\
Settings
ReloadDataInterval = 3600

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool\
DUMPSETTING
SendVal = 1

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool
parentName = cmd.exe

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool
PartnerID = gretech03

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool
Version = 2.0.1.5000005

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool
UserID = {ID}

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool\
INSTALL_MARK
version = 2.0.1.5000005

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool\
2.0.1.5000005
INSTALL_PATH = %Program Files%\WeatherTool\2.0.1.5000005

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool
INSTALL_FIRST_TIME = {Installation date and time}

HKEY_LOCAL_MACHINE\SOFTWARE\WeatherTool
FrID = NEsW91wmTbYyuGA=

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
update
partner = weather

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
update
FrID = NEsW91wmTbYyuGA=,JFwS91EgV6owog==

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
update
Version = 4.0.0.15839

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
update
GUID = {GUID}

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
update
Version = 4.0.0.15839

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
update
soft_weather = {URL}

Other Details

This Potenitally Unwanted Application connects to the following possibly malicious URL:

  • http://mini.{BLOCKED}lesever.net/report?uid={value}&type={value}&partner=gretech03
  • http://download.{BLOCKED}heery.net/download/weather_bd.encrypt
  • http://www.{BLOCKED}heery.net/cgi-bin-py/weather_install.cgi
  • http://www.{BLOCKED}heery.net/download/WeatherTool_Setup_Jp_NoModiyTime_base%5B2017-04-01.14.01.42%5D.exe
  • http://www.{BLOCKED}oftware365.info/cgi-bin-py/weather_install.cgi
  • http://weather.{BLOCKED}oftware365.net/weather?key=autoip&lang=EN
  • http://www.{BLOCKED}oftware365.info/cgi-bin-py/weather_uu.cgi
  • http://businessplatform.ime.{BLOCKED}u.jp/pc_ime/getmsg?is_ime_exist=0&cisp=&cisp_hid=&csp=&csp_hid=&dfb=i&esp=&esp_hid=&fsp=&fsp_hid=&hao123=0022222&id={82697b28412b908f21d5413e81060bed}&isp=www.microsoft.com&isp_hid=&no_up_date=30&os=5.1.2600&osp=&osp_hid=&partner=weather&seconds=3104&user_type=1&ver=4.0.0.15839&wait_start_seconds=1007
  • http://ime.{BLOCKED}u.jp/type/img/pvi.gif?t=3&len=832&data={value}

  SOLUTION

Minimum Scan Engine:

9.850

SSAPI PATTERN File:

1.833.00

SSAPI PATTERN Date:

04 May 2017

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

Delete this registry key

[ Learn More ]

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
    • WeatherTool
  • In HKEY_LOCAL_MACHINE\SOFTWARE\baidu
    • update

Step 4

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %User Temp%\ns{random}.tmp
  • %Program Files%\WeatherTool\2.0.1.5000005
  • %Program Files%\Baidu\update
  • %All Users Profile%\Application Data\baidu\update

Step 5

Search and delete these files

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %Application Data%\WeatherTool\dump\BugReportConfig.ini
  • %User Temp%\82697b28412b908f21d5413e81060bed\3033250.exe
  • %Windows%\Tasks\BaiduJP_Update_{8099779F-A13B-403e-B39A-65133857586B}.job
  • %All Users Profile%\Documents\Baidu\Common\I18N\conf.db

Step 6

Scan your computer with your Trend Micro product to delete files detected as PUA_TOPTOOLS.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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