Analysis by: Rika Joi Gregorio
 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:

  • 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.

  TECHNICAL DETAILS

File Size: 508,928 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 20 Nov 2013

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 files:

  • {malware path}\imp.dat - will be deleted afterwards
  • {malware path}\System.Data.SQLite.dll - will be deleted afterwards

It drops and executes the following files:

  • {malware path}\Impressioner.exe - will be deleted afterwards

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://check.d2m.{BLOCKED}ile.com/impression/precheck?event=precheck_def_browser&user_id={User ID}&user_class={Date Today}&tracking_id={Tracking ID}&source=&subid=&subid2=ie&subid3=precheck_33