TROJ_SWISYN.MN

October 09, 2012
 Analysis by: Sabrina Lei Sioting
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It retrieves specific information from the affected system.

  TECHNICAL DETAILS

File Size:

45,568 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

12 Jun 2012

Payload:

Steals information

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Backdoor Routine

This Trojan opens the following port(s) where it listens for remote commands:

  • 188

Information Theft

This Trojan retrieves the following information from the affected system:

  • Computer name
  • Password
  • Username

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

9.188.07

FIRST VSAPI PATTERN DATE:

12 Jun 2012

VSAPI OPR PATTERN File:

9.189.00

VSAPI OPR PATTERN Date:

12 Jun 2012

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

Identify and terminate files detected as TROJ_SWISYN.MN

[ 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 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_SWISYN.MN. 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

  1. 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 Trend Micro support page:
    Note: The steps apply for specific products indicated in the page.
  2. 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:
  3. Block unused ports to disallow malware from using these ports to communicate and/or enforce commands.
  4. Monitor network connections for any suspicious connection or connectivity.
  5. Don’t save login credentials on the local computer.


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