Modified by: Adrian Cofreros
ALIASES:

Trojan:Win32/Itsproc(Microsoft),HEUR:Trojan.Win32.Generic(Kaspersky),a variant of Win32/Kryptik.BTGG trojan(NOD32)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size: 20,999 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 30 Jan 2014

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan drops the following copies of itself into the affected system:

  • %User Startup%\jremmm.exe

(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.)

Download Routine

This Trojan saves the files it downloads using the following names:

  • %User Temp%\{number}.tmp

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

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}k.com/script/jms/includes/load.php?module=grabbers
  • http://{BLOCKED}k.com/script/jms/includes/load.php?module=avclean
  • http://{BLOCKED}k.com/script/jms/includes/load.php?module=sniffers
  • http://{BLOCKED}8.su/xmlrpc/includes/indelss/cuda.ltc.coinotr.exe
  • http://{BLOCKED}8.su/xmlrpc/includes/indelss/2cg-ltc-coinotr.exe
  • http://{BLOCKED}8.su/xmlrpc/includes/indelss/coinot-LTC.exe
  • http://{BLOCKED}8.su/xmlrpc/includes/indelss/FTC-cpu-coinotron.exe
  • http://{BLOCKED}f.ca/members/fs/bot.exe
  • http://{BLOCKED}d.ru/themes/ndp/js/steps/task.php?{random characters}
  • http://{BLOCKED}e.in/includes/images/js/task.php?{random characters}
  • http://redsfs.{BLOCKED}t.ua/includes/images/js/task.php?{random characters}

It deletes itself after execution.

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine: 9.300
FIRST VSAPI PATTERN FILE: 10.576.06
FIRST VSAPI PATTERN DATE: 31 Jan 2014
VSAPI OPR PATTERN File: 10.577.00
VSAPI OPR PATTERN Date: 01 Feb 2014

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

Restart in Safe Mode

[ Learn More ]

Step 3

Search and delete these files

[ 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.
  • %User Startup%\jremmm.exe
  • %User Temp%\{number}.tmp

Step 4

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


Did this description help? Tell us how we did.