TSPY_BANKER.WUUZ
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/vinfo/imgFiles/legend.jpg)
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
6,069,248 bytes
EXE
Yes
14 Jun 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.
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
{malware file name} = "{malware path and file name}"
Other System Modifications
This spyware modifies the following file(s):
- %System%\WBEM\AutoRecover\88744D2A29102FC88ECF505DD2E984FC.mof
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Wbem\WMIC
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Wbem\WMIC
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\WMIC
mofcompstatus = "0"
HKEY_CURRENT_USER\Software\Microsoft\
Wbem\WMIC
WMICLC = "0"
HKEY_CURRENT_USER\Software\Microsoft\
Wbem\WMIC
mofcompMUIStatus = "0"
HKEY_CURRENT_USER\Software\Microsoft\
Wbem\WMIC
mofcompMUIStatus = "ffffffff"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\WMIC
Cli.mof = "127360152460000000"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\WMIC
CliEgAliases.mof = "127360152460000000"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\WMIC
CliEgAliases.mfl = "127360152460000000"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\WMIC
mofcompstatus = "1"
HKEY_CURRENT_USER\Software\Microsoft\
Wbem\WMIC
WMICLC = "49"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\CIMOM
Autorecover MOFs timestamp = "130464539270625000"
(Note: The default value data of the said registry entry is 129689362348742500.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\CIMOM
Autorecover MOFs = "{random characters}"
(Note: The default value data of the said registry entry is {random values}.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\CIMOM
Autorecover MOFs timestamp = "130464539656093750"
(Note: The default value data of the said registry entry is 129689362348742500.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\CIMOM
Autorecover MOFs timestamp = "130464539664843750"
(Note: The default value data of the said registry entry is 129689362348742500.)
Dropping Routine
This spyware drops the following files:
- %User Temp%\tmp1.tmp
- %User Temp%\tmp5.tmp
- %System%\WBEM\AutoRecover\C8463ECBE33BC240263A0B094E46D510.mof
- %User Temp%\tmp9.tmp
- %System%\WBEM\AutoRecover\23BDE61F1F4FACE17E9B0C01F2A1FD9B.mof
- TempWmicBatchFile.bat
(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.. %System% is the Windows system folder, which is usually C:\Windows\System32.)
This report is generated via an automated analysis system.
SOLUTION
9.700
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\Microsoft\Wbem\
- WMIC
- In HKEY_CURRENT_USER\SOFTWARE\Microsoft\Wbem\
- WMIC
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
- {malware file name} = "{malware path and file name}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\WMIC
- mofcompstatus = "0"
- In HKEY_CURRENT_USER\Software\Microsoft\Wbem\WMIC
- WMICLC = "0"
- In HKEY_CURRENT_USER\Software\Microsoft\Wbem\WMIC
- mofcompMUIStatus = "0"
- In HKEY_CURRENT_USER\Software\Microsoft\Wbem\WMIC
- mofcompMUIStatus = "ffffffff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\WMIC
- Cli.mof = "127360152460000000"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\WMIC
- CliEgAliases.mof = "127360152460000000"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\WMIC
- CliEgAliases.mfl = "127360152460000000"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\WMIC
- mofcompstatus = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Wbem\WMIC
- WMICLC = "49"
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\Microsoft\WBEM\CIMOM
- From: Autorecover MOFs timestamp = "130464539270625000"
To: Autorecover MOFs timestamp = ""129689362348742500""
- From: Autorecover MOFs timestamp = "130464539270625000"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\CIMOM
- From: Autorecover MOFs = "{random characters}"
To: Autorecover MOFs = ""{random values}""
- From: Autorecover MOFs = "{random characters}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\CIMOM
- From: Autorecover MOFs timestamp = "130464539656093750"
To: Autorecover MOFs timestamp = ""129689362348742500""
- From: Autorecover MOFs timestamp = "130464539656093750"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\CIMOM
- From: Autorecover MOFs timestamp = "130464539664843750"
To: Autorecover MOFs timestamp = ""129689362348742500""
- From: Autorecover MOFs timestamp = "130464539664843750"
Step 6
Search and delete these components
- %User Temp%\tmp1.tmp
- %User Temp%\tmp5.tmp
- %System%\WBEM\AutoRecover\C8463ECBE33BC240263A0B094E46D510.mof
- %User Temp%\tmp9.tmp
- %System%\WBEM\AutoRecover\23BDE61F1F4FACE17E9B0C01F2A1FD9B.mof
- TempWmicBatchFile.bat
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_BANKER.WUUZ. 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 8
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%\WBEM\AutoRecover\88744D2A29102FC88ECF505DD2E984FC.mof
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