TROJ_SMALL.CQ

October 08, 2012
 Analysis by: JasperM
 PLATFORM:

Windows 98, ME, NT, 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

  TECHNICAL DETAILS

File Size:

91,920 bytes

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

03 May 2009

Arrival Details

This Trojan may be dropped by other malware.

It may be unknowingly downloaded by a user while visiting malicious websites.

Download Routine

This Trojan accesses the following websites to download files:

  • http://{BLOCKED}lp.co.kr/App/Ver_MainPro.txt - non malicious
  • http://{BLOCKED}lp.co.kr/app_count/install_count.php?mac= - non malicious
  • http://{BLOCKED}lp.co.kr/App/Ver_SHelp.txt - non malicious
  • http://{BLOCKED}lp.co.kr/App/1,0,0,1-uninstall.exe.zgz - also detected as TROJ_SMALL.CQ
  • http://{BLOCKED}lp.co.kr/App/1,0,0,3-shelp.dll.zgz - also detected as TROJ_SMALL.CQ
  • http://{BLOCKED}lp.co.kr/App/shelp.exe - detected as TROJ_Generic.DIT
  • http://{BLOCKED}lp.co.kr/App/Default.html - non malicious

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

  SOLUTION

Minimum Scan Engine:

8.900

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Remove malware files dropped/downloaded by TROJ_SMALL.CQ

Step 3

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