Analysis by: Roland Marco Dela Paz
ALIASES:

W32.Duqu (Symantec)

 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 may be dropped by other malware.

  TECHNICAL DETAILS

File Size: 24,320 bytes
File Type: SYS
Memory Resident: Yes
Initial Samples Received Date: 21 Mar 2012

Arrival Details

This Trojan may be dropped by other malware.

NOTES:

This malware is a driver component of the TROJ_DUQU malware. It serves as a loader of its main malware during startup by decrypting an encrypted DLL component. It injects the decrypted DLL to a process, thereby triggering the execution of the host malware.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: *under processing

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 and note files detected as RTKT_DUQU.C

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete the file detected as RTKT_DUQU.C

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files in the search result.

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as RTKT_DUQU.C. 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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