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TROJ_CHEPRO.RTF

January 14, 2014
 Analysis by: Rhena Inocencio
 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:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Spammed via email


This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

  TECHNICAL DETAILS

File Size:

699,717 bytes

File Type:

RTF

Initial Samples Received Date:

18 Nov 2013

Payload:

Drops files

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

Installation

This Trojan drops the following files:

  • %Application Data%\C_Internet_Banking_TED.cpl - detected as TROJ_CHEPRO.CPL

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

NOTES:

Below is an example of a spammed email message containing the attached malware:

The document contains the attached TROJ_CHEPRO.CPL:

When users double click the attached image above, the copy of TROJ_CHEPRO.CPL will be dropped on the system.

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

10.470.03

FIRST VSAPI PATTERN DATE:

13 Dec 2013

VSAPI OPR PATTERN File:

10.471.00

VSAPI OPR PATTERN Date:

14 Dec 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 dropped/downloaded by TROJ_CHEPRO.RTF

Step 3

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