Threat Encyclopedia

TSPY_CHEPRO.JTJ

Publish date: February 18, 2015

ANALYSIS BY

Cris Nowell Pantanilla


PLATFORM:

Windows

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. It arrives as a component bundled with malware/grayware packages.

It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

TECHNICAL DETAILS

File Size:

266,240 bytes

File Type:

DLL

Memory Resident:

No

Initial Samples Received Date:

16 Feb 2015

Payload:

Drops files

Arrival Details

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

It arrives as a component bundled with malware/grayware packages.

Installation

This Trojan drops the following files:

  • %System Root%\dlls.dll
  • %System Root%\dll.dll
  • %System Root%\sv.exe

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Dropping Routine

This Trojan executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

SOLUTION

Minimum Scan Engine:

9.700

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

Search and delete this file

[ Learn More ]
There may be some 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.
 %System Root%\dlls.dll
%System Root%\dll.dll
%System Root%\sv.exe

Step 3

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