Analysis by: Cris Nowell Pantanilla

ALIASES:

Exploit:Win32/CVE-2010-3333 [Microsoft]

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

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

  TECHNICAL DETAILS

File Size: 93,739 bytes
File Type: RTF
Memory Resident: No
Initial Samples Received Date: 10 May 2011

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.

Dropping Routine

This Trojan drops the following files:

  • %System Root%\Documents and Settings\All Users\Application Data\iosys

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

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