Analysis by: Christopher Daniel So
 PLATFORM:

Windows 2000, XP, 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 may be dropped by other malware.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size: 349,184 bytes
File Type: PE
Memory Resident: No
Initial Samples Received Date: 28 Dec 2010
Payload: Drops files

Arrival Details

This Trojan may be dropped by other malware.

Installation

This Trojan drops the following files:

  • %Current Folder%\{malware file name}

Other Details

This Trojan deletes itself after execution.

  SOLUTION

Minimum Scan Engine: 8.900
FIRST VSAPI PATTERN FILE: 7.732.04
FIRST VSAPI PATTERN DATE: 28 Dec 2010

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Search and delete this file

[ Learn More ]
There may be some component 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. %Current Folder%\{malware file name}

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_KRYPTIK.AAZ. 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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