TROJ_DOWNAD.MJV
W32.Downadup!autorun (Symantec); Win32.Worm.DownadupINF.Gen (BitDefender); Worm.Win32.AutoRun.gxk (Kaspersky)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan may be dropped by other malware.
It automatically executes files when a user opens a drive.
TECHNICAL DETAILS
Arrival Details
This Trojan may be dropped by the following malware:
Propagation
The said .INF file contains the following strings:
{multiple lines of garbage}
icon=%syStEmrOot%\sySTEM32\sHELL32.Dll ,4
{multiple lines of garbage}
shelLExECUte=RuNdLl32.EXE .\RECYCLER\S-5-3-42-2819952290-8240758988-879315005-3665\jwgkvsq.vmx,ahaezedrn
{multiple lines of garbage}
Other Details
This Trojan automatically executes the following files when a user opens a drive:
- .\RECYCLER\S-5-3-42-2819952290-8240758988-879315005-3665\jwgkvsq.vmx
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
Remove the malware/grayware file that dropped/downloaded TROJ_DOWNAD.MJV. (Note: Please skip this step if the threat(s) listed below have already been removed.)
- WORM_DOWNAD.MJV
Step 3
Search and delete AUTORUN.INF files created by TROJ_DOWNAD.MJV that contain these strings
- {multiple lines of garbage}
- icon=%syStEmrOot%\sySTEM32\sHELL32.Dll ,4
- {multiple lines of garbage}
- shelLExECUte=RuNdLl32.EXE .\RECYCLER\S-5-3-42-2819952290-8240758988-879315005-3665\jwgkvsq.vmx,ahaezedrn
- {multiple lines of garbage}
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_DOWNAD.MJV. 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 the following Trend Micro Support pages for more information:
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