TSPY_BANCOS.JDM
TrojanSpy:Win32/Bancos.gen!B (Microsoft); Trojan.Gen.2 (Symantec); PAK:UPX (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Generic.Banker.Delf.AD4ADD29 (FSecure)
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
2,258,944 bytes
EXE
Yes
12 May 2012
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:
- %System Root%\window\ctfmon.exe
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
It creates the following folders:
- %System Root%\window
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
Autostart Technique
This spyware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Microsoftctfmon = "%System Root%\window\ctfmon.exe"
It modifies the following registry entries to ensure it automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
Shell = "explorer.exe , %System Root%\window\ctfmon.exe"
(Note: The default value data of the said registry entry is Explorer.exe.)
Other System Modifications
This spyware adds the following registry keys:
HKEY_CURRENT_USER\ctfmon
HKEY_LOCAL_MACHINE\SOFTWARE\winsxss
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\winsxss
VER = "2.3"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
system
EnableLUA = "0"
This report is generated via an automated analysis system.
SOLUTION
9.200
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
Identify and delete files detected as TSPY_BANCOS.JDM using either the Startup Disk or Recovery Console
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_CURRENT_USER
- ctfmon
- In HKEY_LOCAL_MACHINE\SOFTWARE
- winsxss
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
- Microsoftctfmon = "%System Root%\window\ctfmon.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\winsxss
- VER = "2.3"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system
- EnableLUA = "0"
Step 5
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.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
- From: Shell = "explorer.exe , %System Root%\window\ctfmon.exe"
To: Shell = ""Explorer.exe""
- From: Shell = "explorer.exe , %System Root%\window\ctfmon.exe"
Step 6
Search and delete this folder
- %System Root%\window
Step 7
Scan your computer with your Trend Micro product to delete files detected as TSPY_BANCOS.JDM. 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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