PLATFORM:

Windows

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This spyware may be dropped by other malware.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size: 6,144 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 05 Dec 2014

Arrival Details

This spyware may be dropped by the following malware:

  • TSPY_URSNIF.SM2
  • TSPY_URSNIF.SM20

This malware arrives via the following means:

  • dropped as %User Temp%\~{random}.tmp

(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.)

Other Details

This spyware deletes itself after execution.

NOTES:

This malware is a component of the following malware:

  • TSPY_URSNIF.SM2
  • TSPY_URSNIF.SM20

It is responsible for injecting the embedded DLL of URSNIF to the following processes for memory residency and monitoring of network traffic:

  • explorer.exe
  • iexplore.exe
  • firefox.exe
  • chrome.exe
  • services.exe

  SOLUTION

Minimum Scan Engine: 9.700
VSAPI OPR PATTERN File: 11.323.00
VSAPI OPR PATTERN Date: 05 Dec 2014

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

Remove the malware/grayware file that dropped/downloaded TSPY_URSNIF.SM3 . (Note: Please skip this step if the threat(s) listed below have already been removed.)

     
    • TSPY_URSNIF.SM2
    • TSPY_URSNIF.SM20

Step 3

Scan your computer with your Trend Micro product to delete files detected as TSPY_URSNIF.SM3 . 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.