TrojanSpy.Win32.URSNIF.TIABOEBS

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 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.

Installation

This Trojan Spy drops the following files:

• %User Temp%\{random filename}.bin
• %User Temp%\{random filename}.bin1
• %User Temp%\{random filename}.bi1 - contains the list of computer or network resources
• %Application Data%\Microsoft\{string1}{string2}\{string1}{string2}.lnk
  where:
  {string1} = first four letters of a dll file under System directory
  {string2} = last four letters of a dll file under System directory

(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(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

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

• %Application Data%\Microsoft\{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 current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

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%\Microsoft\{string1}{string2}\{string1}{string2}.exe"

It adds the following lines or registry entries as part of its routine:

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

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}\
Vr

HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}\
Sfi

HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}\
Run

HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}\
Config

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
• Credentials from the following:
  
  • Outlook
  • Thunderbird
  • Internet Explorer
• Credentials related to cryptocurrency:
  • electrum-
  • bitcoin
  • multibit-hd
  • bither
  • msigna.
  • Jaxx.
  • JEdudus.
  • armory-
  • veracrypt
  • truecrypt

Stolen Information

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

• https://{BLOCKED}rsob.com/images/{random path}/{random characters}.{bmp/png}

Other Details

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

• https://{BLOCKED}rsob.com/images/{random path}/{random characters}.{gif/jpeg}

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:
  • vbox
  • qemu
  • vmware
  • virtual hd
• Executes commands to gather information:
  • cmd /C "nslookup myip.opendns.com resolver1.opendns.com > %User Temp%\{random filename}.bin"
  • cmd /C "systeminfo.exe > %User Temp%\{random filename}.bin"
  • cmd /C "net view >> %User Temp%\{random filename}.bin"
  • cmd /C "nslookup 127.0.0.1 >> %User Temp%\{random filename}.bin"
  • cmd /C "tasklist.exe /SVC >> %User Temp%\{random filename}.bin"
  • cmd /C "driverquery.exe >> %User Temp%\{random filename}.bin"
  • cmd /C "reg.exe query "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" /s >> %User Temp%\{random filename}.bin"
  • cmd /U /C "type %User Temp%\{random filename}.bin1 > %User Temp%\{random filename}.bin & del %User Temp%\{random filename}.bin"
• 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 deletes the initially executed copy of itself