SWF_TOOBERR.A

October 08, 2012
 Analysis by: JasperM
 PLATFORM:

Windows 2000, XP, 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. However, as of this writing, the said sites are inaccessible.

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

It takes advantage of certain vulnerabilities.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

SWF

Memory Resident:

No

Initial Samples Received Date:

14 Sep 2010

Arrival Details

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

However, as of this writing, the said sites are inaccessible.

Download Routine

This Trojan accesses the following websites to download files:

  • http://www.{BLOCKED}st.com/cnlcnlcnl.cnl
  • http://www.{BLOCKED}st.com/cnlcnlcnl.cnl?s=y
  • http://www.{BLOCKED}st.com/cnlembf.jpg

It saves the files it downloads using the following names:

  • c:\msvs7.exe

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

Other Details

This Trojan does the following:

  • Its malware code displays the following messages:

    Icebreaker.hx:43: h0pe all y0u AV c0mp4n13z r34lly 3nj0y wr171ng fl45h pl4y3r emul470rz!@# c0z wh3n y0u d0 g3n3r1c d3cryp710n f0r AVM2 th3r3 4r3 s3v3r4l m0r3 wh3r3 it c4m3 fr0m... :D
    Icebreaker.hx:40: new kid on the block

It takes advantage of the following vulnerabilities:

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI OPR PATTERN File:

7.462.14

VSAPI OPR PATTERN Date:

14 Sep 2010

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

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