➔
search
✕

TSPY_URSNIF.USVP

February 18, 2016
 Analysis by: Rhena Inocencio
 ALIASES:

Win32/PSW.Papras.EH (ESET)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This spyware may be downloaded by other malware/grayware from remote sites.

It deletes the initially executed copy of itself.

  TECHNICAL DETAILS

File Size:

348,160 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

09 Feb 2016

Arrival Details

This spyware may be downloaded by the following malware/grayware from remote sites:

  • http://192.227.181.211/foru.exe

Installation

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

  • %Application Data%\{random folder name}\{random filename}.exe

(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 the following files:

  • %User Temp%\{random folder name}\{random characters}.bat - 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.)

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
{random name} = "%Application Data%\{random folder name}\{random filename}.exe"

Other Details

This spyware connects to the following possibly malicious URL:

  • hxxp://{BLOCKED}ool.at/y2xrmg/aw5maxjtzxi/c3rhda
  • hxxp://{BLOCKED}0.at/y2xrmg/aw5maxjtzxi/c3rhda
  • hxxp://{BLOCKED}ev.at/y2xrmg/aw5maxjtzxi/c3rhda
  • hxxp://{BLOCKED}ek.cn/y2xrmg/aw5maxjtzxi/c3rhda
  • hxxp://{BLOCKED}oop.su/y2xrmg/aw5maxjtzxi/c3rhda
  • hxxp://{BLOCKED}er.at/y2xrmg/aw5maxjtzxi/c3rhda
  • hxxp://{BLOCKED}ot.at/y2xrmg/aw5maxjtzxi/c3rhda
  • hxxp://{BLOCKED}rt.at/y2xrmg/aw5maxjtzxi/c3rhda
  • hxxp://{BLOCKED}x.at/y2xrmg/aw5maxjtzxi/c3rhda
  • hxxp://{BLOCKED}toy.at/y2xrmg/aw5maxjtzxi/c3rhda
  • hxxp://{BLOCKED}ex100.su/y2xrmg/aw5maxjtzxi/c3rhda
  • hxxp://{BLOCKED}te.cn/y2xrmg/aw5maxjtzxi/c3rhda

It deletes the initially executed copy of itself

  SOLUTION

Minimum Scan Engine:

9.800

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

Scan your computer with your Trend Micro product and note files detected as TSPY_URSNIF.USVP

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Delete this registry value

[ Learn More ]

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
    • {random name} = "%Application Data%\{random folder name}\{random filename}.exe"

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_URSNIF.USVP. 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.


Did this description help? Tell us how we did.