JS_SENSAVE.A

February 21, 2014
 Analysis by: Rika Joi Gregorio
 Modified by: Jimelle Monteser
 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: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware

This adware may arrive bundled with malware packages as a malware component. It may be dropped by other malware.

It does not have any propagation routine.

It does not have any backdoor routine.

As of this writing, the said sites are inaccessible.

It does not have any information-stealing capability.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size:

85,740 bytes

File Type:

JS

Memory Resident:

Yes

Initial Samples Received Date:

09 Feb 2014

Payload:

Connects to URLs/IPs, Downloads files

Arrival Details

This adware may arrive bundled with malware packages as a malware component.

It may be dropped by other malware.

Propagation

This adware does not have any propagation routine.

Backdoor Routine

This adware does not have any backdoor routine.

Download Routine

This adware accesses the following websites to download files:

  • http://ch.{BLOCKED}s.com/version.js?appTitle=SaveSense&variety=ssusr&sg={sampleGroup}&h={hardId}&partner={partner}&channel={channel}&cb={cb}

As of this writing, the said sites are inaccessible.

Information Theft

This adware does not have any information-stealing capability.

Other Details

This adware requires its main component to successfully perform its intended routine.

NOTES:

It does not have rootkit capabilities.

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

10.604.03

FIRST VSAPI PATTERN DATE:

13 Feb 2014

VSAPI OPR PATTERN File:

10.605.00

VSAPI OPR PATTERN Date:

14 Feb 2014

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

Close all opened browser windows

Step 3

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