TSPY_URSNIF.TIBAIAR

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 other malware/grayware from remote sites.

It does not have any propagation routine.

It does not have any backdoor routine.

It connects to certain websites to send and receive information. It deletes the initially executed copy of itself.

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:

• TSPY_BEBLOH.YMNOV

It may be downloaded from the following remote sites:

• http://{BLOCKED}t.cz/olex.exe

Installation

This Trojan Spy drops the following copies of itself into the affected system and executes them:

• %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

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

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 user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It creates the following folders:

• %Application Data%\{string1}{string2}
  where:
  {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 Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It injects codes into the following process(es):

• explorer.exe

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}\
Run

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} = "{hex value}"
where {Value Name} may be any of the following:

• Main
• Block
• Temp
• Client
• Ini
• Keys
• Scr
• LastTask
• LastConfig
• CrHook
• OpHook
• Exec
• TorCrc
• TorClient

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
EnableSPDY3_0 = "0"

Propagation

This Trojan Spy does not have any propagation routine.

Backdoor Routine

This Trojan Spy does not have any backdoor routine.

Rootkit Capabilities

This Trojan Spy does not have rootkit capabilities.

Dropping Routine

This Trojan Spy drops the following files wherein it saves the information it gathers:

• %User Temp%\{random filename}.bin
• %User Temp%\{random filename}.bin1 - contains the list of computer or network resources

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

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)
• List of computer and network resources

Stolen Information

This Trojan Spy sends the gathered information via HTTP POST to the following URL:

• https://{BLOCKED}ska.com/images/{random path}.bmp

Other Details

This Trojan Spy connects to the following website to send and receive information:

• https://{BLOCKED}ska.com/images/{random path}.gif

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
• 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}.bin1"
• Uninstalls itself
• Terminates itself if it runs under a virtual machine or sandbox by checking the following strings against Plug and Play devices:
  • vbox
  • qemu
  • vmware
  • virtual hd

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It deletes the initially executed copy of itself

NOTES:
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)