W97M/Downloader.aeo (McAfee), Troj/DocDl-EU (Sophos),
Windows
This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
Arrival Details
This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
NOTES:
Once the malicous document is opened, the macro which contains the malware code executes and drops the following files:
The file adobeacd-updatexp.vbs and adobeacd-update.ps1 accesses the following links to download files:
The malware saves the file using the following filename:
For OS Version XP and below, the file adobeacd-update.bat executes adobeacd-updatexp.vbs and the downloaded file %Temp\444.exe%. It also deletes itself after execution.
For OS Version Vista and above, the file adobeacd-update.bat executes adobeacd-update.vbs which ,in turn, executes adobeacd-update.ps1. The file adobeacd-update.ps1 ensures that the downloaded file is executed and deletes all dropped files after execution.
Step 1
Remove the malware/grayware file that dropped/downloaded W2KM_BARTALEX.CE. (Note: Please skip this step if the threat(s) listed below have already been removed.)
Step 2
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 3
Search and delete these components
Step 4
Scan your computer with your Trend Micro product to delete files detected as W2KM_BARTALEX.CE. 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.