TSPY_URSNIF.AAACM

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.

It does not have any propagation routine.

It does not have any backdoor routine.

It connects to certain websites to send and receive information.

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 and executes the following files:

• %User Temp%\{random folder name}\{random filename}.bat ← used to execute copy and delete itself

(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 drops the following copies of itself into the affected system:

• %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: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

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: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

It adds the following mutexes to ensure that only one of its copies runs at any one time:

• Local\{GUID}

It injects codes into the following process(es):

• explorer.exe
• opera.exe
• chrome.exe
• iexplore.exe
• firefox.exe

It terminates the execution of the copy it initially executed and executes the copy it drops instead.

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
{string1}{string2} = %Application Data%\{string1}{string2}\{string1}{string2}.exe

Other System Modifications

This spyware 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_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%Windows%\explorer.exe = "%Windows%\explorer.exe:*:Enabled:Windows Explorer"

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
• Install
• LastTask
• LastConfig
• CrHook
• OpHook
• Exec
• NetCfg
• LastIni

Propagation

This spyware does not have any propagation routine.

Backdoor Routine

This spyware does not have any backdoor routine.

Dropping Routine

This spyware drops the following files wherein it saves the information it gathers:

• %User Temp%\{random filename}.bin

(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 spyware 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)

Other Details

This spyware connects to the following website to send and receive information:

• http://{domain}/images/{random path}.{gif/jpeg}
  where {domain} can be any of the following:
  • {BLOCKED}ruty.ru
  • {BLOCKED}rshteer.xyz
  • {BLOCKED}rrtron.club
  • {BLOCKED}raster.ru
  • {BLOCKED}on98.com

It does the following:

• It 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
  
  
• Save stolen information in a file and then upload it
• Monitor Internet browsing activities
• Hook APIs of target process
• Disable 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"
• Uninstall itself

Mobile Malware Routine

This spyware sends the gathered information via HTTP POST to the following URL(s):

• http://{domain}/images/{random path}.{bmp}
  where {domain} can be any of the following:
  • {BLOCKED}uty.ru
  • {BLOCKED}rshteer.xyz
  • {BLOCKED}rrtron.club
  • {BLOCKED}raster.ru
  • {BLOCKED}on98.com

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)

It does not have rootkit capabilities.

It does not exploit any vulnerability.