TROJ_DLOADR.BVC
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
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.
It deletes itself after execution.
TECHNICAL DETAILS
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.
Other System Modifications
This Trojan deletes the following files:
- %Windows%\tasks\sa01.dat
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
Dropping Routine
This Trojan drops the following files:
- %Windows%\setupball.bmp
- %System%\drivers\ahnurla.sys
- %Windows%\svchost.exe
- %Windows%\image.jpg
(Note: %Windows% is the Windows folder, which is usually C:\Windows.. %System% is the Windows system folder, which is usually C:\Windows\System32.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://www.{BLOCKED}m.net/001.jpg
- http://www.{BLOCKED}u.com/001.jpg
- http://www.{BLOCKED}orea.com/bbs2/001.jpg
- http://www.{BLOCKED}r.co.kr/bbs2/data/001.jpg
- http://www.{BLOCKED}5.co.kr/nbbs/001.jpg
- http://adw.{BLOCKED}4.co.kr/001.jpg
It deletes itself after execution.
This report is generated via an automated analysis system.
SOLUTION
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Search and delete these components
- %Windows%\setupball.bmp
- %System%\drivers\ahnurla.sys
- %Windows%\svchost.exe
- %Windows%\image.jpg
Step 3
Scan your computer with your Trend Micro product to delete files detected as TROJ_DLOADR.BVC. 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.
Step 4
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %Windows%\tasks\sa01.dat
Did this description help? Tell us how we did.