TROJ_BANKER.VDX
RDN/Qhost-Gen!c (McAfee); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse Dropper.Generic7.BANQ (AVG)
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
856,198 bytes
EXE
No
20 Jul 2013
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 modifies the following file(s):
- %System%\drivers\etc\hosts
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
It deletes the following files:
- %System%\drivers\etc\hosts
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Internet Explorer\Security
HKEY_CURRENT_USER\SoftWare\ahnlab
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Internet Explorer\Security
DisableSecuritySettingsCheck = "1"
HKEY_CURRENT_USER\Software\ahnlab
RunPach = "%Temp%"
It modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
1201 = "0"
(Note: The default value data of the said registry entry is 3.)
Dropping Routine
This Trojan drops the following files:
- %Temp%\ahnlab.ini
- %Temp%\ahnlab.exe
(Note: %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.)
This report is generated via an automated analysis system.
SOLUTION
9.300
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
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\Policies\Microsoft\Internet Explorer
- Security
- In HKEY_CURRENT_USER\SoftWare
- ahnlab
Step 3
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_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\Security
- DisableSecuritySettingsCheck = "1"
- In HKEY_CURRENT_USER\Software\ahnlab
- RunPach = "%Temp%"
Step 4
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
- From: 1201 = "0"
To: 1201 = ""3""
- From: 1201 = "0"
Step 5
Search and delete these components
- %Temp%\ahnlab.ini
- %Temp%\ahnlab.exe
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_BANKER.VDX. 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 7
Restore deleted/modified files and/or registry entries from backup
*Note: Only Microsoft-related files/keys/values will be restored. If this malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- %System%\drivers\etc\hosts
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.
- %System%\drivers\etc\hosts
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