PTCH_REDUS.A

August 09, 2013
 Analysis by: Rika Joi Gregorio
 ALIASES:

Trojan.Botime(Norton)

 PLATFORM:

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

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

This is the Trend Micro detection for files patched with malicious code by BKDR_BOTIME. It is used as an autostart malware component to execute the chunk of codes in the registry entry created by BKDR_BOTIME.

This Trojan may be dropped by other malware.

It does not have any propagation routine.

It does not have any backdoor routine.

It does not drop any other file.

It does not have any downloading capability.

It does not have any information-stealing capability.

  TECHNICAL DETAILS

File Size:

179,456 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

13 Jun 2013

Arrival Details

This Trojan may be dropped by the following malware:

  • BKDR_BOTIME

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Dropping Routine

This Trojan does not drop any other file.

Download Routine

This Trojan does not have any downloading capability.

Information Theft

This Trojan does not have any information-stealing capability.

NOTES:

This is the Trend Micro detection for files patched with malicious code by BKDR_BOTIME.

It is used as an autostart malware component to execute the chunk of codes in the following registry entry created by BKDR_BOTIME:

HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\Boot Runner1 = "{encrypted chunk of codes}"

This chunk of codes contains the encrypted malicious routines of BKDR_BOTIME.

It does not have rootkit capabilities.

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

9.980.02

FIRST VSAPI PATTERN DATE:

13 Jun 2013

VSAPI OPR PATTERN File:

9.981.00

VSAPI OPR PATTERN Date:

14 Jun 2013

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

Remove the malware/grayware file that dropped/downloaded PTCH_REDUS.A

  • BKDR_BOTIME

Step 3

Restore a file/s that has/have been corrupted/modified by this malware/grayware

To restore system files:

• For Windows 2000:

  1. Insert your Windows 2000 Installation CD in your CD-ROM drive.
  2. Click Start>Run.
  3. In the Open text box, type the following then click OK:
    expand D:\i386\{file to restore}.ex_ %windir%\system32\{file to restore}.exe

    4. (Note: In the example above, D: refers to the CD-ROM drive. If your CD-ROM drive is not D:, please change the letter accordingly. Also, the file to restore is C:\WINNT\System32\explorer.exe.)

• For Windows XP and Windows Server 2003:

  1. Click Start>Run.
  2. In the Open text box, type the following then click OK:
    MSCONFIG

  3. Make sure that the option Normal startup - load all device drivers and services option is selected.

  4. Click the Expand button.
  5. In the dialog box that appears, type the following:

    6. Wherein:
    • File to restore contains the path and file name of the file you wish to restore.
    • Restore from contains the path to the Windows CAB files. This path may vary from machine to machine. It may be in a local drive, in a network drive, or in a CD-ROM. In the local drive, it is usually in C:\WINDOWS\OPTIONS\INSTALL.
    • Save file in contains the path of the file you wish to restore (Do not include the file name).
  6. Click the Expand button.

Step 4

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