Analysis by: Don Ovid Ladores

 PLATFORM:

Windows

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

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This adware may be downloaded by other malware/grayware/spyware from remote sites. It may be downloaded from app stores/third party app stores.

  TECHNICAL DETAILS

File Size: 415232 bytes
File Type: EXE
Memory Resident: Yes

Arrival Details

This adware may be downloaded by other malware/grayware/spyware from remote sites.

It may be downloaded from app stores/third party app stores.

Installation

This adware drops the following files:

  • %Temp%\nseF.tmp\IEKill.dll
  • %Temp%\nseF.tmp\KillProcDLL.dll
  • %Temp%\nseF.tmp\UnProtectMode.dll
  • %Temp%\nseF.tmp\DLLWebCount.dll
  • %Temp%\nseF.tmp\SelfDelete.dll
  • C:\DelUS.bat
  • C:\Program Files\SRankingPopView\srankingp.exe (detected as ADW_KRADDARE.GA)
  • C:\Program Files\SRankingPopView\sranking.dll (detected as ADW_KRADDARE.GA)
  • C:\Program Files\SRankingPopView\srankingdc.exe (detected as ADW_KRADDARE.GA)
  • C:\Program Files\SRankingPopView\uninstall.exe

(Note: %Temp% is the Windows temporary folder, where it usually is C:\Windows\Temp on all Windows operating system versions.)

It stays resident in memory by creating the following process(es):

  • srankingp.exe

Autostart Technique

This adware adds the following registry entries to enable its automatic execution at every system startup:

HKCU\Software\Microsoft\
Windows\CurrentVersion\Run
SRankingPopView = %Program Files%\SRankingPopView\srankingp.exe

HKCU\Software\Microsoft\
Windows\CurrentVersion\Run
SRankingPopViewupdate = %Program Files%\SRankingPopView\srankingdc.exe

It registers itself as a BHO to ensure its automatic execution every time Internet Explorer is used by adding the following registry entries:

HKLM\SOFTWARE\Classes\
CLSID\{4486A2C8-DAE1-4862-9265-2F4948F9F980}\InprocServer32
ThreadingModel = Apartment

HKLM\SOFTWARE\Classes\
CLSID\{4486A2C8-DAE1-4862-9265-2F4948F9F980}
AppID = {889F12BD-FA8E-4D33-ACE0-EBB68BC44AA3}

HKLM\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{4486A2C8-DAE1-4862-9265-2F4948F9F980}
NoExplorer = 1

HKLM\SOFTWARE\Classes\
Interface\{D28445FF-A45D-486F-B682-2FE8196555F7}\TypeLib
Version = 1

HKCU\Software\Microsoft\
Windows\CurrentVersion\Explorer\
MountPoints2\{50acfe2a-c8f0-11df-9e33-000c296817cc}
BaseClass = Drive

HKCU\Software\Microsoft\
Windows\CurrentVersion\Explorer\
MountPoints2\{e2d01591-c92b-11df-94c2-806d6172696f}
BaseClass = Drive

HKLM\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{F973817F-8D70-4b6b-BB7E-AAB4DB45463C}
Appname = srankingp.exe

HKLM\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{F973817F-8D70-4b6b-BB7E-AAB4DB45463C}
AppPath = %Program Files%\SRankingPopView\

HKLM\SOFTWARE\Classes\
AppID\scattertap.DLL
AppID = {889F12BD-FA8E-4D33-ACE0-EBB68BC44AA3}

Information Theft

This adware gathers the following data:

  • visited pages
  • search engine queries

Stolen Information

This adware sends the gathered information via HTTP POST to the following URL:

  • http://www.{BLOCKED}ck.co.kr/adver_partner/CallKeyword.php?addr={Host IP Address}&q={Site & Search Query}&uCode=popview

  SOLUTION

Minimum Scan Engine: 9.800
SSAPI PATTERN File: 1.691.00
SSAPI PATTERN Date: 04 Jan 2016

Step 1

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

Step 2

Remove ADW_KRADDARE.GA by using its own Uninstall option

[ Learn More ]
To uninstall the grayware process

Step 3

Terminate this process

[ Learn More ]

  1. For Windows 98 and ME users, the 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 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.

Step 5

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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.

Step 6

Search and delete this file

[ 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.


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