JS_AGENT.APS

November 19, 2014
 Analysis by: RonJay Kristoffer Caragay
 ALIASES:

Trojan.Script.Agent (Ikarus); JS/Crypted.QT!Eldorado (generic, not disinfectable) (FProtect)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan may arrive bundled with malware packages as a malware component. It 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 hosted on a website and run when a user accesses the said website.

It requires its main component to successfully perform its intended routine. It presents itself as a plugin/add-on/extension for certain applications.

  TECHNICAL DETAILS

File Size:

33,918 bytes

File Type:

Script

Initial Samples Received Date:

11 Aug 2014

Arrival Details

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

It 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 hosted on a website and run when a user accesses the said website.

Other Details

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

It presents itself as a plugin/add-on/extension for the following applications:

  • Internet Explorer
  • Gecko
  • Google Chrome
  • Opera
  • Safari

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

10.978.06

FIRST VSAPI PATTERN DATE:

11 Aug 2014

VSAPI OPR PATTERN File:

10.979.00

VSAPI OPR PATTERN Date:

11 Aug 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

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

Close all opened browser windows

Step 4

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