Arrival Details
This Trojan Spy arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It may be downloaded by the following malware/grayware from remote sites:
Installation
This Trojan Spy drops the following copies of itself into the affected system and executes them:
- %Application Data%\{string1}{string2}\{string1}{string2}.exe
- {string1} = first four letters of a dll file under System directory
- {string2} = last four letters of a dll file under System directory
(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, 7, and 8.)
It drops and executes the following files:
- %User Temp%\{random folder name}\{random filename}.bat ← used to delete itself; deleted afterwards
(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, 7, and 8.)
It injects codes into the following process(es):
Autostart Technique
This Trojan Spy adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{string1}{string2} = "%Application Data%\{string1}{string2}\{string1}{string2}.exe"
Other System Modifications
This Trojan Spy adds the following registry keys:
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}
Vars =
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}
Files =
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}
Config =
It adds the following registry entries:
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}
{UID} = "{hex value}"
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}
{Value Name} = "{data}"
where {Value Name} may be any of the following:- Main
- Block
- Temp
- Client
- Ini
- Keys
- Scr
- LastTask
- LastConfig
- CrHook
- OpHook
- Exec
- TorClient
- TorCrc
- Install
Dropping Routine
This Trojan Spy drops the following files wherein it saves the information it gathers:
- %User Temp%\{random filename}.bin
(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, 7, and 8.)
Information Theft
This Trojan Spy gathers the following data:
- Computer Name
- Digital Certificates
- Cookies
- Keyboard Logs
- Clipboard Logs
- Captured Screenshot
- Email Credentials
- Running processes and services
- Installed device drivers
- Installed Programs
- System Information (Please see notes for more details)
- IP Address
Other Details
This Trojan Spy connects to the following website to send and receive information:
- http://si{BLOCKED}is.com:443
- http://b{BLOCKED}o.com:443
It does the following:
- Saves stolen information in a file and then uploads it.
- Monitors Internet browsing activities.
- Hooks APIs of target process.
- Disables SPDY protocol in Mozilla Firefox.
- It terminates itself if it runs under a virtual machine or sandbox by checking the following strings against Plug and Play devices:
- It executes the following commands:
- cmd.exe /C "%Application Data%\{string1}{string2}\{string1}{string2}.exe" "{Executed Malware Directory}"
- Executes commands to gather information:
- systeminfo.exe
- tasklist.exe /SVC
- driverquery.exe
- reg.exe query
- "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall"
- cmd /C "net view >> "%User Temp%\{random filename}.bin"
- cmd /C nslookup 127.0.0.1 >>"%User Temp%\{random filename}.bin" %User Temp%\{random filename}.bin & del %User Temp%\{random filename}.bin"
(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, 7, and 8.. %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, 7, and 8.)
NOTES:
This trojan spy displays the following message box if it runs on a virtual machine or sandbox:
The file systeminfo.exe returns the following system information:
- Host Name
- OS Name, Version, Manufacturer
- Configuration and Build Type
- Registered Owner and Organization
- Product ID
- Original Install Date
- System Up Time
- System Manufacturer, Model and type
- Processor(s)
- BIOS version
- Windows and System directory
- Boot Device
- System and Input Locale
- Time Zone
- Total and Available Memory
- Virtual Memory information (Max, Available, In Use)
- Page file locations
- Domain
- Logon server
- Hotfix(es)
- Network card(s)
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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Restart in Safe Mode
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To restart in Safe Mode:
• For Windows 2000 users
- Restart your computer.
- Press F8 when you see the Starting Windows bar at the bottom of the screen.
- Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.
• For Windows XP users
- Restart your computer.
- Press F8 after the Power-On Self Test (POST) routine is done. If the Windows Advanced Options menu does not appear, try restarting then pressing F8 several times when the POST screen appears.
- Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.
• For Windows Server 2003 users
- Restart your computer.
- Press F8 after Windows starts up. If the Windows Advanced Options menu does not appear, try restarting again and pressing F8 several times afterward.
- On the Windows Advanced Option menu, use the arrow keys to select Safe Mode then press Enter.
• For Windows Vista, Windows 7, and Windows Server 2008 users
- Restart your computer.
- Press F8 after the Power-On Self Test (POST) routine is done. If the Advanced Boot Options menu does not appear, try restarting and then pressing F8 several times after the POST screen is displayed.
- On the Advanced Boot Options menu, use the arrow keys to select the Safe Mode option, and then press Enter.
• For Windows 8, Windows 8.1, and Windows Server 2012 users
- Access the Charms bar by moving your mouse pointer to the upper right corner of the screen.
- Move your mouse pointer down and click Settings>Change your PC Settings.
- In the left panel, click General.
- In the right panel, scroll down to the bottom to find the Advanced startup section, then click the Restart now button and wait for the system to restart.
- In the Advanced Startup menu, click Troubleshoot>Advanced Options>Startup Settings>Restart and wait for the system to restart.
- In the Startup Settings menu, press 4 to enable safe mode.
Step 4
Delete this registry value
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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\AppDataLow\Software\Microsoft\{GUID}
- In HKEY_CURRENT_USER\Software\AppDataLow\Software\Microsoft\{GUID}
To delete the registry value this malware created:
- Open Registry Editor. To do this:
» For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
» For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower left corner of the screen, click Run, type regedit in the text box provided, and then press Enter. - In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>AppDataLow>Software>Microsoft>{GUID} - In the right panel, locate and delete the entry:
{UID} = "{hex value}" - Again In the right panel, locate and delete the entry:
{Value Name} = "{data}" - Close Registry Editor.
Step 5
Delete this registry key
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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
- {string1}{string2} = "%Application Data%\{string1}{string2}\{string1}{string2}.exe"
- In HKEY_CURRENT_USER\Software\AppDataLow\Software\Microsoft
To delete registry keys this malware/grayware created:
- Open Registry Editor. To do this:
» For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
» For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower left corner of the screen, click Run, type regedit in the text box provided, and then press Enter. - In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Run - Still in the left panel, locate and delete the key:
{string1}{string2} = "%Application Data%\{string1}{string2}\{string1}{string2}.exe" - In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>AppDataLow>Software>Microsoft - Still in the left panel, locate and delete the key:
{GUID} - Close Registry Editor.
Step 6
Search and delete this file
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There may be some files that are hidden. Please make sure you check the
Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
- %Application Data%\{string1}{string2}\{string1}{string2}.exe
- where:
- {string1} = first four letters of a dll file under System directory
- {string2} = last four letters of a dll file under System directory
- %User Temp%\{random folder name}\{random filename}.bat
- %User Temp%\{random filename}.bin
To manually delete a malware/grayware file from an affected system:
• For Windows 2000, Windows XP, and Windows Server 2003:
- Right-click Start then click Search....
- In the File name* input box, type the following:
- %Application Data%\{string1}{string2}\{string1}{string2}.exe
- where:
- {string1} = first four letters of a dll file under System directory
- {string2} = last four letters of a dll file under System directory
- %User Temp%\{random folder name}\{random filename}.bat
- %User Temp%\{random filename}.bin
- In the Look In drop-down list, select My Computer then press Enter.
- Once located, select the file then press SHIFT+DELETE to delete it.
*Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).
• For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:
- Open a Windows Explorer window.
- For Windows Vista, 7, and Server 2008 users, click Start>Computer.
- For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen, then click File Explorer.
- In the Search Computer/This PC input box, type:
- %Application Data%\{string1}{string2}\{string1}{string2}.exe
- where:
- {string1} = first four letters of a dll file under System directory
- {string2} = last four letters of a dll file under System directory
- %User Temp%\{random folder name}\{random filename}.bat
- %User Temp%\{random filename}.bin
- Once located, select the file then press SHIFT+DELETE to delete it.
*Note: Read the following Microsoft page if these steps do not work on Windows 7.
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_URSNIF.TIBAIDO. 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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