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TROJ_DLOADE.CIT

October 09, 2012
 Analysis by: Erika Bianca Mendoza
 PLATFORM:

Windows 2000, Windows, XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan 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:

155,648 bytes

File Type:

EXE

File Compression:

UPX

Memory Resident:

Yes

Initial Samples Received Date:

07 Dec 2011

Payload:

Downloads files, Connects to URLs/IPs

Arrival Details

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

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • http://{BLOCKED}oad.barosearch.co.kr/bacon2/A61262411/barosearchinstall.exe - ADW_BAROSEA
  • http://up.{BLOCKED}lget.co.kr/part/fgetp9.exe - detected by Trend Micro as TROJ_FAKR.AF
  • http://{BLOCKED}oad.firstclick.co.kr/Download/ch5/1.0.2.6/FirstClickInstaller.exe - ADW_FIRSTCLCK
  • http://{BLOCKED}oad.addiplus.com/cs25/wiselook.exe - detected by Trend Micro as TROJ_DLOADR.ZTV

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:

9.200

FIRST VSAPI PATTERN FILE:

8.630.07

FIRST VSAPI PATTERN DATE:

07 Dec 2011

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/grayware files dropped/downloaded by TROJ_DLOADE.CIT

    TROJ_FAKR.AF
    TROJ_DLOADR.ZTV
    ADW_BAROSEA
    ADW_FIRSTCLCK

Step 3

Identify and terminate files detected as TROJ_DLOADE.CIT

[ Learn More ]
  1. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  2. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

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

NOTES:

RECOMMENDATIONS

This malware is detected and removed by the latest Trend Micro anti-malware engine and pattern. Always keep pattern files and engines up-to-date. To know more about updating your Trend Micro product's pattern, please refer to the following Trend Micro support page:


Note: The steps apply for specific products indicated in the page.

To actively detect and protect your machine, enable real-time scanning of your Trend Micro anti-malware product. Refer to the following Trend Micro support page to know more about enabling real-time scanning in your Trend Micro product:

To enable Firewall to protect against threats: How do I enable or disable the Personal Firewall of Trend Micro Internet Security?

  • Be aware of social engineering attacks.
  • Avoid accessing the listed malicious URLs to prevent possible re-infection.
  • Monitor network connections for any suspicious connection or connectivity.
  • Regularly update list of untrusted websites.
  • Block malware related websites.
  • Avoid visiting un-trusted sites that may redirect or download malware into the system.


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