Analysis by: Cris Nowell Pantanilla
 Modified by: Anthony Joe Melgarejo
 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet, Dropped by other malware

This adware arrives as a component bundled with malware/grayware packages. It may be manually installed by a user.

It connects to certain websites to send and receive information.

  TECHNICAL DETAILS

File Size: 825,856 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 14 Nov 2013
Payload: Connects to URLs/IPs

Arrival Details

This adware arrives as a component bundled with malware/grayware packages.

It may be downloaded from the following remote sites:

  • http://{BLOCKED}3.co.kr/cust

It may be manually installed by a user.

Other System Modifications

This adware adds the following registry keys:

HKEY_CURRENT_USER\Software\QuickBae

It creates the following registry entry(ies) to bypass Windows Firewall:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAcess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
{Installation Directory}\QuickBae_call.exe = "{Installation Directory}\QuickBae_call.exe:*:Enabled:QuickBae"

Other Details

This adware connects to the following website to send and receive information:

  • {BLOCKED}.{BLOCKED}.32.185

NOTES:

This adware uses the information from the user input to send Korean advertisements.

The installation package consists of the following files:

  • AllatPayCS.dll
  • gdiplus.dll
  • QBCautorun_new.exe
  • QBreload.exe
  • QuickBae_Call.exe

It connects to the URL http://{BLOCKED}3.co.kr/cust to download the updated installation package.

  SOLUTION

Minimum Scan Engine: 9.300

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

Scan your computer with your Trend Micro product and note files detected as ADW_KRADARE

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_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAcess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
    • {Installation Directory}\QuickBae_call.exe = "{Installation Directory}\QuickBae_call.exe:*:Enabled:QuickBae"

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
    • QuickBae

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.
  • {Installation Directory}\AllatPayCS.dll
  • {Installation Directory}\gdiplus.dll
  • {Installation Directory}\QBCautorun_new.exe
  • {Installation Directory}\QBreload.exe
  • {Installation Directory}\QuickBae_Call.exe

Step 6

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