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PUA.WIN32.CONDUIT.GB

January 11, 2019
 Analysis by: Kiyoshi Obuchi
 PLATFORM:

Windows

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

  • Threat Type: Potentially Unwanted Application

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

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:

367,973 bytes

File Type:

EXE

File Compression:

UPX

Memory Resident:

No

Initial Samples Received Date:

09 Jan 2019

Payload:

Modifies system registry, Acts as a proxy server, Displays graphics/image, Connects to URLs/IPs

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 drops the following files:

  • %Application Data%\GetRightToGo\1.data0
  • %Application Data%\GetRightToGo\1.data
  • %Application Data%\GetRightToGo\1.htm
  • %User Profile%\Documents\Downloads\CT2776682_BrotherSoft_Extreme.exe

(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, and 8.. %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, 7, and 8.)

It creates the following folders:

  • %Application Data%\GetRightToGo
  • %User Profile%\Documents\Downloads

(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, and 8.. %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, 7, and 8.)

It adds the following mutexes to ensure that only one of its copies runs at any one time:

  • {filename}r3tZSFCn

Other System Modifications

This Potentially Unwanted Application adds the following registry entries as part of its installation routine:

HKEY_CURRENT_USER\Software\Headlight\
GetRightToGo\CustomizedApps
1 = "1"

HKEY_CURRENT_USER\Software\Headlight\
GetRightToGo\SharedConfig
BusyPause = "15"

HKEY_CURRENT_USER\Software\Headlight\
GetRightToGo\SharedConfig
FileCache = "0"

HKEY_CURRENT_USER\Software\Headlight\
GetRightToGo\SharedConfig
FileCacheKB = "100"

HKEY_CURRENT_USER\Software\Headlight\
GetRightToGo\SharedConfig
Rollback = "0"

HKEY_CURRENT_USER\Software\Headlight\
GetRightToGo\SharedConfig
DotGetRight = "0"

Other Details

This Potentially Unwanted Application does the following:

  • Shows the following user interface
  • Shows the following when the Potentially unwanted application is out of date and connects to http://www.{BLOCKED}t.com/ to show the website:
  • Shows the following options:
  • The Potentially unwanted application has the capability to use proxies. It shows the following to modify the proxy settings:
  • Saves the file it downloads as: %Temporary Internet Files%\Content.IE5\{random}\20100826[1].jpg
  • Connects to the following URL to download an image for user interface of the Potentially unwanted application:
    • http://{BLOCKED}g.{BLOCKED}ft.com/softsale/img/20100826.jpg

  SOLUTION

Minimum Scan Engine:

9.850

SSAPI PATTERN File:

2.137.00

SSAPI PATTERN Date:

10 Jan 2019

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

Identify and terminate files detected as PUA.WIN32.CONDUIT.GB

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

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_CURRENT_USER\Software\Headlight
    • GetRightToGo

Step 5

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.
  • %Application Data%\GetRightToGo
  • %User Profile%\Documents\Downloads

Step 6

Close all opened browser windows

Step 7

Scan your computer with your Trend Micro product to delete files detected as PUA.WIN32.CONDUIT.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 the following Trend Micro Support pages for more information:


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