ALIASES:

Win32/InstallCore.CY application (ESET)

 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 manually installed by a user.

However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size: 678,968 bytes
File Type: EXE
Initial Samples Received Date: 17 Oct 2014
Payload: Connects to URLs/IPs

Arrival Details

This adware may be manually installed by a user.

Installation

This adware drops the following files:

  • %Desktop%\Continue Codec Pack Installation.lnk
  • %User Temp%\is{random number}\{random number}_stp.CIS
  • %User Temp%\is{random number}\{random number}_stp.CIS.part

(Note: %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.. %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.)

It drops the following copies of itself into the affected system:

  • %User Temp%\ICReinstall_ICReinstall_UltimateCodec.exe

(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.)

It creates the following folders:

  • %User Temp%\is{random number}

(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.)

Other System Modifications

This adware adds the following registry keys:

HKEY_CURRENT_USER\Software\InstallCore

Other Details

This adware connects to the following possibly malicious URL:

  • rp.{BLOCKED}codecpackapp.com/?pcrc={value}
  • www.{BLOCKED}tcodecpackapp.com/gb/welcome/?sr=gb&lp=sag&c=1
  • os2.{BLOCKED}codecpackapp.com/CM/?v={version}&c={value}
  • os-test.{BLOCKED}codecpackapp.com/CM/?v={version}&c={value}
  • cdnus.{BLOCKED}codecpackapp.com/ofr/DealPly/Dealply.cis
  • cdnus.{BLOCKED}codecpackapp.com/app/Cmp/codecpack.cis

However, as of this writing, the said sites are inaccessible.