TROJ_PACKED.BDI
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan may arrive bundled with malware packages as a malware component. It may arrive as a file that exports functions used by other malware. It may be dropped by other malware. It may be dropped by other malware.
It modifies registry entries to hide files with System and Read-only attributes.
It requires its main component to successfully perform its intended routine.
TECHNICAL DETAILS
113,664 bytes
DLL
Yes
18 Dec 2008
Connects to URLs/Ips
Arrival Details
This Trojan may arrive bundled with malware packages as a malware component.
It may arrive as a file that exports functions used by other malware.
It may be dropped by other malware.
It may be dropped by the following malware:
- WORM_AUTORUN.ZZT
Installation
This Trojan stays memory-resident by injecting codes into the following processes:
- IExplore.exe
Other System Modifications
This Trojan modifies the following registry entries to hide files with System and Read-only attributes:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced
Hidden = 2
(Note: The default value data of the said registry entry is 1.)
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced
ShowSuperHidden = 0
(Note: The default value data of the said registry entry is 1.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced\Folder\Hidden\
SHOWALL
CheckedValue = 0
(Note: The default value data of the said registry entry is 1.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}5.com/hg2/ll.rar
It requires its main component to successfully perform its intended routine.
SOLUTION
8.900
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 TROJ_PACKED.BDI. 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 3
Restart in Safe Mode
Step 4
Restore this modified registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced
Hidden = 2
default value = 1
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced
ShowSuperHidden = 0
default value = 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL
CheckedValue = 0
default value = 1
Step 5
Search and delete these files
Note: To do a search for the following files, right-click Start then click Search... or Find..., depending on the version of Windows you are running. For each file to be deleted, type its file name in the Named input box. In the Look In drop-down list, select My Computer, then press Enter.
Step 6
Remove malware files dropped/downloaded by TROJ_PACKED.BDI
- WORM_AUTORUN.ZZT
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