X97M_LAROUX.BH
PLATFORM:
Windows 98, ME, NT, 2000, XP, Server 2003
OVERALL RISK RATING:
DAMAGE POTENTIAL:
DISTRIBUTION POTENTIAL:
REPORTED INFECTION:
Threat Type: File infector
Destructiveness: No
Encrypted:
In the wild: Yes
TECHNICAL DETAILS
File Size:
Varies
File Type:
XLS
Memory Resident:
No
Initial Samples Received Date:
05 Jul 2009
Other Details
Based on analysis of the codes, it has the following capabilities:
- Hooks the macro Auto_Open
- Checks for the file BOOK1.XLS under XLSTART directory
- Saves the active workbook as BOOK1.XLS under XLSTART directory if it does not exist
- Infects an active workbook by creating a module named LAROUX that contains its maliicous code
- Clears the section TITLE, SUBJECT, AUTHOR, KEYWORDS and COMMENTS in an infected file's properties
- Checks for the module "laroux" in target documents so that it avoids reinfecting previous infections
SOLUTION
Minimum Scan Engine:
8.900
VSAPI OPR PATTERN File:
6.253.00
VSAPI OPR PATTERN Date:
06 Jul 2009
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
Scan your computer with your Trend Micro product to delete files detected as X97M_LAROUX.BH. 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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