TSPY_BANKER.RB
TrojanSpy:Win32/Banker.VV (Microsoft); Trojan.Gen (Symantec); Trojan-Spy.Win32.Banker.to (fs) (Sunbelt)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Spyware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This spyware 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
Arrival Details
This spyware 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 spyware drops the following copies of itself into the affected system:
- %Application Data%\ctfmom.exe
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
Autostart Technique
This spyware registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\6AE37AE3
Other System Modifications
This spyware adds the following registry keys:
HKEY_CURRENT_USER\ctfmom
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\novo
ImagePath = "system32\drivers\novo.sys"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\6AE37AE3
ImagePath = "system32\drivers\6AE37AE3.sys"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced
EnableBalloonTips = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
system
EnableLUA = "0"
Dropping Routine
This spyware drops the following files:
- %System%\drivers\novo.sys
- %System%\drivers\6AE37AE3.sys
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
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
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\SYSTEM\CurrentControlSet\Services
- 6AE37AE3
- In HKEY_CURRENT_USER
- ctfmom
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_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\novo
- ImagePath = "system32\drivers\novo.sys"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\6AE37AE3
- ImagePath = "system32\drivers\6AE37AE3.sys"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
- EnableBalloonTips = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system
- EnableLUA = "0"
Step 5
Search and delete these components
- %System%\drivers\novo.sys
- %System%\drivers\6AE37AE3.sys
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_BANKER.RB. 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.
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