TSPY_CARBERP.FPU
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
7,339,391 bytes
EXE
Yes
21 Feb 2014
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:
- %User Profile%\Application Data\video.exe
(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 spyware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
CWS08D101 = "%User Profile%\Application Data\video.exe"
Other System Modifications
This spyware adds the following registry keys:
HKEY_CURRENT_USER\SOFTWARE\vTask
HKEY_CURRENT_USER\SOFTWARE\vTask\
Accelerators
HKEY_CURRENT_USER\SOFTWARE\vTask\
UserVariables
It adds the following registry entries:
HKEY_CURRENT_USER\Software\vTask
RunTrackingShow = "0"
HKEY_CURRENT_USER\Software\vTask
LogLevel = "0"
HKEY_CURRENT_USER\Software\vTask
HiliteRunningStep = "0"
HKEY_CURRENT_USER\Software\vTask\
Accelerators
Stop = "00"
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter1 = "{malware path and file name}"
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter2 = "%User Startup%\Wilbert.exe"
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter3 = "0 "
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter4 = [REG_EXPAND_SZ, value: ]
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter5 = [REG_EXPAND_SZ, value: ]
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter6 = [REG_EXPAND_SZ, value: ]
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter7 = [REG_EXPAND_SZ, value: ]
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter8 = [REG_EXPAND_SZ, value: ]
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter9 = [REG_EXPAND_SZ, value: ]
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter10 = [REG_EXPAND_SZ, value: ]
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter11 = [REG_EXPAND_SZ, value: ]
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter12 = [REG_EXPAND_SZ, value: ]
HKEY_CURRENT_USER\Software\vTask\
UserVariables
parameter2 = "%User Profile%\Application Data\video.exe"
HKEY_CURRENT_USER\Software\vTask
FailStep = "12b"
HKEY_CURRENT_USER\Software\vTask
FailStep = "12c"
Dropping Routine
This spyware drops the following files:
- %User Startup%\Wilbert.exe
(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.)
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_CURRENT_USER\SOFTWARE
- vTask
- In HKEY_CURRENT_USER\SOFTWARE\vTask
- Accelerators
- In HKEY_CURRENT_USER\SOFTWARE\vTask
- UserVariables
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
- CWS08D101 = "%User Profile%\Application Data\video.exe"
- In HKEY_CURRENT_USER\Software\vTask
- RunTrackingShow = "0"
- In HKEY_CURRENT_USER\Software\vTask
- LogLevel = "0"
- In HKEY_CURRENT_USER\Software\vTask
- HiliteRunningStep = "0"
- In HKEY_CURRENT_USER\Software\vTask\Accelerators
- Stop = "00"
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter1 = "{malware path and file name}"
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter2 = "%User Startup%\Wilbert.exe"
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter3 = "0 "
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter4 = [REG_EXPAND_SZ, value: ]
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter5 = [REG_EXPAND_SZ, value: ]
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter6 = [REG_EXPAND_SZ, value: ]
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter7 = [REG_EXPAND_SZ, value: ]
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter8 = [REG_EXPAND_SZ, value: ]
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter9 = [REG_EXPAND_SZ, value: ]
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter10 = [REG_EXPAND_SZ, value: ]
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter11 = [REG_EXPAND_SZ, value: ]
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter12 = [REG_EXPAND_SZ, value: ]
- In HKEY_CURRENT_USER\Software\vTask\UserVariables
- parameter2 = "%User Profile%\Application Data\video.exe"
- In HKEY_CURRENT_USER\Software\vTask
- FailStep = "12b"
- In HKEY_CURRENT_USER\Software\vTask
- FailStep = "12c"
Step 5
Search and delete this file
- %User Startup%\Wilbert.exe
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_CARBERP.FPU. 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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