RTKT_STUXNET.A

October 08, 2012
 Analysis by: Christopher Daniel So
 PLATFORM:

Windows 98, ME, NT, 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 is Trend Micro's detection for the SYS files dropped by WORM_STUXNET.A. These files are responsible for hiding the processes, modules and files that their main component has created.

This Trojan may be dropped by other malware.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

03 Jun 2010

Payload:

Hides files and processes

Arrival Details

This Trojan may be dropped by the following malware:

  • WORM_STUXNET.A

Rootkit Capabilities

This Trojan is used by other malware for its rootkit functionalities.

Other Details

Based on analysis of the codes, it has the following capabilities:

  • This is Trend Micro's detection for the SYS files dropped by WORM_STUXNET.A. These files are responsible for hiding the processes, modules and files that their main component has created.

It requires its main component to successfully perform its intended routine.

  SOLUTION

Minimum Scan Engine:

8.900

FIRST VSAPI PATTERN FILE:

7.308.03

FIRST VSAPI PATTERN DATE:

03 Jun 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

Remove malware files dropped/downloaded by RTKT_STUXNET.A

Step 3

Scan your computer with your Trend Micro product and note files detected as RTKT_STUXNET.A

Step 4

Restart in Safe Mode

[ Learn More ]

Step 5

Search and delete these files

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result. Files noted earlier

Note: To identify STUXNET-infected systems within a network, administrators can use Trend Micro's special STUXNET Scanner Tool. For more details, download and extract the package and refer to the tool's incorporated text file.


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