TROJ_DLOADE.BAW
VirTool:Win32/DelfInject.gen!BB (Microsoft); BackDoor-DSG.gen.a (McAfee); Trojan.Gen (Symantec); Trojan.Win32.Crypt.vb (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan.Downloader.Agent.YFQ (FSecure)
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.
TECHNICAL DETAILS
56,187 bytes
EXE
Yes
23 Apr 2012
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.
Installation
This Trojan creates the following folders:
- %System%\Bandook Folder
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Bandook = "%System%\Bandook Folder\venezuelahoy.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{B6A807N6-42DF-4W02-93E5-B156B3FA8AL1}
StubPath = "%System%\Bandook Folder\venezuelahoy.exe"
Other System Modifications
This Trojan deletes the following files:
- L
- 3
It adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{B6A807N6-42DF-4W02-93E5-B156B3FA8AL1}
It adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion
inf = "%System%\Bandook Folder"
It deletes the following registry keys:
HKEY_CURRENT_USER
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Active Setup\Installed Components\{B6A807N6-42DF-4W02-93E5-B156B3FA8AL1}
Dropping Routine
This Trojan drops the following files:
- pÂ
- %System%\Bandook Folder\venezuelahoy.exe
- ð£¢
- ô£¢
- p_CHAR(0x06)_£
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
This report is generated via an automated analysis system.
SOLUTION
9.200
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
Restart in Safe Mode
Step 3
Delete this registry key
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.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components
- {B6A807N6-42DF-4W02-93E5-B156B3FA8AL1}
Step 4
Delete this 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.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- Bandook = "%System%\Bandook Folder\venezuelahoy.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{B6A807N6-42DF-4W02-93E5-B156B3FA8AL1}
- StubPath = "%System%\Bandook Folder\venezuelahoy.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion
- inf = "%System%\Bandook Folder"
Step 5
Search and delete these components
- pÂ
- %System%\Bandook Folder\venezuelahoy.exe
- ð£¢
- ô£¢
- p_CHAR(0x06)_£
Step 6
Search and delete this folder
- %System%\Bandook Folder
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_DLOADE.BAW. 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 8
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.
- L
- 3
Step 9
Restore these deleted registry keys/values from backup
*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- In
- HKEY_CURRENT_USER
- In HKEY_CURRENT_USER\SOFTWARE\Microsoft\Active Setup\Installed Components
- {B6A807N6-42DF-4W02-93E5-B156B3FA8AL1}
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