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PUA_TOPTOOLS.GB

June 30, 2017
 Modified by: Michael Jay Villanueva
 ALIASES:

Riskware/Hao123 (Fortinet)

 PLATFORM:

Windows

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

  • 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. It may be manually installed by a user.

  TECHNICAL DETAILS

File Size:

1,114,160 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

26 Jun 2017

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:

  • %User Profile%\Documents\Baidu
  • %User Profile%\Baidu\Common
  • %User Profile%\Common\I18N
  • %User Profile%\Application Data\baidu
  • %User Profile%\baidu\hao123
  • %User Profile%\hao123\res
  • %Start Menu%\Programs\日本hao123

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu 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 Potentially Unwanted Application adds the following registry keys:

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
hao123desk-jp

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
IEHomePage = "http://jp.{BLOCKED}3.com/?tn=cdit_pay_hp_03_{BLOCKED}3_jp"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
chrome.exe = "0"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
firefox.exe = "0"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
Desktop = "1"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
StartMenu = "1"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
QuickLaunch = "1"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
UseInstaller = "0"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
ToyPath = "%User Profile%\hao123\hao123.1.0.0.1113.exe"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
BaiduTn = "tn=cdit_pay_hp_03_hao123_jp"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
PackageType = "SilenceTn"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
hao123desk-jp
DisplayIcon = "%User Profile%\hao123\hao123.1.0.0.1113.exe "

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
hao123desk-jp
DisplayName = "日本hao123ショートカット"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
hao123desk-jp
DisplayVersion = "1.0.0.1113"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
hao123desk-jp
HelpLink = "http://www.{BLOCKED}3.com/desk.html"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
hao123desk-jp
Publisher = "hao123"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
hao123desk-jp
UninstallString = "%User Profile%\hao123\hao123.1.0.0.1113.exe -uninstall "

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
LaunchCount = "0"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
GUID = "{349A5CB5-D4DD-4897-84BA-CFE070602643}"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
NewBaiduTn = "tn=cdit_pay_hp_03_hao123_jp"

HKEY_CURRENT_USER\Software\Baidu\
Hao123-jp\hao123desk
InstallTime = "1498529278"

Dropping Routine

This Potentially Unwanted Application drops the following files:

  • %User Temp%\hao123Config.xml
  • %User Temp%\Toylocalize.ini
  • %User Temp%\bdg7.tmp
  • %User Profile%\hao123\Toylocalize.ini
  • %User Profile%\res\normal.png
  • %User Profile%\res\hover.png
  • %User Profile%\res\active.png
  • %User Profile%\res\mask.png
  • %User Temp%\bdg13.exe
  • %User Profile%\hao123\hao123.1.0.0.1113.exe
  • %Desktop%\Hao123.lnk
  • %Start Menu%\Programs\日本hao123\Hao123.lnk
  • %Start Menu%\Programs\日本hao123\hao123のアンインストール.lnk
  • %User Profile%\Quick Launch\Hao123.lnk

(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.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in 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.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu 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 Details

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

  • http://dl.{BLOCKED}t.baidu.com/hao123/desk/jp/update-jp?{random characters}
  • http://stat.{BLOCKED}t.ghk.hao123.com/img/gut.gif?{random characters}
  • {BLOCKED}.197.176
  • {BLOCKED}142.249
  • {BLOCKED}45.163
  • {BLOCKED}8.23.135
  • {BLOCKED}5.46.64

  SOLUTION

Minimum Scan Engine:

9.850

SSAPI PATTERN File:

1.851.00

SSAPI PATTERN Date:

29 Jun 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

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.

  • HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\hao123desk-jp

Step 3

Delete this registry value

[ 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_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • IEHomePage = "http://jp.{BLOCKED}3.com/?tn=cdit_pay_hp_03_{BLOCKED}3_jp"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • chrome.exe = "0"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • firefox.exe = "0"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • Desktop = "1"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • StartMenu = "1"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • QuickLaunch = "1"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • UseInstaller = "0"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • ToyPath = "%User Profile%\hao123\hao123.1.0.0.1113.exe"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • BaiduTn = "tn=cdit_pay_hp_03_hao123_jp"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • PackageType = "SilenceTn"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\hao123desk-jp
    • DisplayIcon = "%User Profile%\hao123\hao123.1.0.0.1113.exe "
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\hao123desk-jp
    • DisplayName = "日本hao123ショートカット"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\hao123desk-jp
    • DisplayVersion = "1.0.0.1113"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\hao123desk-jp
    • HelpLink = "http://www.{BLOCKED}3.com/desk.html"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\hao123desk-jp
    • Publisher = "hao123"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\hao123desk-jp
    • UninstallString = "%User Profile%\hao123\hao123.1.0.0.1113.exe -uninstall "
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • LaunchCount = "0"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • GUID = "{349A5CB5-D4DD-4897-84BA-CFE070602643}"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • NewBaiduTn = "tn=cdit_pay_hp_03_hao123_jp"
  • In HKEY_CURRENT_USER\Software\Baidu\Hao123-jp\hao123desk
    • InstallTime = "1498529278"

Step 4

Search and delete these folders

[ 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 Profile%\Documents\Baidu
  • %User Profile%\Baidu\Common
  • %User Profile%\Common\I18N
  • %User Profile%\Application Data\baidu
  • %User Profile%\baidu\hao123
  • %User Profile%\hao123\res
  • %Start Menu%\Programs\日本hao123

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.
  • %User Temp%\hao123Config.xml
  • %User Temp%\Toylocalize.ini
  • %User Temp%\bdg7.tmp
  • %User Profile%\hao123\Toylocalize.ini
  • %User Profile%\res\normal.png
  • %User Profile%\res\hover.png
  • %User Profile%\res\active.png
  • %User Profile%\res\mask.png
  • %User Temp%\bdg13.exe
  • %User Profile%\hao123\hao123.1.0.0.1113.exe
  • %User Profile%\Quick Launch\Hao123.lnk
  • %Desktop%\Hao123.lnk
  • %Start Menu%\Programs\日本hao123\Hao123.lnk
  • %Start Menu%\Programs\日本hao123\hao123のアンインストール.lnk

Step 6

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