Analysis by: Rika Joi Gregorio
 ALIASES:

Trojan.Win32.Hider(Ikarus), Win32/Olmasco.O trojan(Eset), Rootkit.TDSS.1121(VBA32)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Canal de infecção: Bundled with malware packages as component

This Trojan may arrive bundled with malware packages as a malware component.

Its rootkit functionalities are used by other malware/grayware. It hides files, processes, and/or registry entries.

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

  TECHNICAL DETAILS

Tipo de compactação: Varies
Tipo de arquivo: SYS
Residente na memória: Yes
Data de recebimento das amostras iniciais: 07 Apr 2012

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

Rootkit Capabilities

This Trojan s rootkit functionalities are used by other malware/grayware.

It hides files, processes, and/or registry entries.

Other Details

This Trojan requires its main component to successfully perform its intended routine.

  SOLUTION

Mecanismo de varredura mínima: 9.300
Primeiro arquivo padrão VSAPI: 8.890.09
Data do lançamento do primeiro padrão VSAPI: 01 Dec 2011
VSAPI OPR Pattern Version: 8.891.00
VSAPI OPR Pattern veröffentlicht am: 02 Dec 2011

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

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

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete the files detected as RTKT_TDSS.APR

*Note: Some component files may be 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.

To stop the malware/grayware from running when certain files are opened:

For Windows 2000, Windows XP, and Windows Server 2003:

  1. Right-click Start then click Search....
  2. In the Named input box, type the name of the file that was detected earlier.
  3. In the Look In drop-down list, select My Computer then press Enter.
  4. Once located, select the file then press SHIFT+DELETE to delete it.

For Windows Vista and Windows 7:

  1. Click Start>Computer.
  2. In the Search Computer input box, type the name of the file detected earlier, and press Enter.
  3. Once located, select the file then press SHIFT+DELETE to delete it.
    *Note: Read the following Microsoft page if these steps do not work on Windows 7.

Step 5

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