TROJ_BANKER.UBR
Windows 2000, Windows XP, Windows Server 2003
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
892,928 bytes
EXE
Yes
07 Sep 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.
Installation
This Trojan creates the following folders:
- %User Profile%\Common Files
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
openv = "%User Profile%\Common Files\openv.exe"
Other System Modifications
This Trojan adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\Programmable
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\Control
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\Insertable
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\InprocServer32
ThreadingModel = "Apartment"
(Note: The default value data of the said registry entry is Apartment.)
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{3F30C968-480A-4C6C-862D-EFC0897BB84B}\InprocServer32
ThreadingModel = "Apartment"
(Note: The default value data of the said registry entry is Apartment.)
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{9DBD2C50-62AD-11D0-B806-00C04FD706EC}\InprocServer32
ThreadingModel = "Apartment"
(Note: The default value data of the said registry entry is Apartment.)
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{EAB841A0-9550-11CF-8C16-00805F1408F3}\InprocServer32
ThreadingModel = "Apartment"
(Note: The default value data of the said registry entry is Apartment.)
It deletes the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\MiscStatus\
1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\MiscStatus
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\ProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\ToolboxBitmap32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\Version
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\VersionIndependentProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}
Dropping Routine
This Trojan drops the following files:
- %User Temp%\TMP4352$.TMP
- %User Temp%\RGI4.tmp
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
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
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\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}
- Programmable
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}
- Control
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}
- Insertable
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\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- openv = "%User Profile%\Common Files\openv.exe"
Step 5
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_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\InprocServer32
- From: ThreadingModel = "Apartment"
To: ThreadingModel = ""Apartment""
- From: ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{3F30C968-480A-4C6C-862D-EFC0897BB84B}\InprocServer32
- From: ThreadingModel = "Apartment"
To: ThreadingModel = ""Apartment""
- From: ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{9DBD2C50-62AD-11D0-B806-00C04FD706EC}\InprocServer32
- From: ThreadingModel = "Apartment"
To: ThreadingModel = ""Apartment""
- From: ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{EAB841A0-9550-11CF-8C16-00805F1408F3}\InprocServer32
- From: ThreadingModel = "Apartment"
To: ThreadingModel = ""Apartment""
- From: ThreadingModel = "Apartment"
Step 6
Search and delete these components
- %User Temp%\TMP4352$.TMP
- %User Temp%\RGI4.tmp
Step 7
Search and delete this folder
- %User Profile%\Common Files
Step 8
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_BANKER.UBR. 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 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_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}
- InprocServer32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}\MiscStatus
- 1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}
- MiscStatus
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}
- ProgID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}
- ToolboxBitmap32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}
- TypeLib
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}
- Version
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{50F16B26-467E-11D1-8271-00C04FC3183B}
- VersionIndependentProgID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {50F16B26-467E-11D1-8271-00C04FC3183B}
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