arrow_back
search
close

INF_OTORUN.VBFV

September 26, 2014
 Analysis by: Adrian Cofreros
 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan may be dropped by other malware.

It automatically executes files when a user opens a drive.

  TECHNICAL DETAILS

File Size:

5,393 bytes

File Type:

INF

Memory Resident:

No

Initial Samples Received Date:

19 Sep 2014

Arrival Details

This Trojan may be dropped by other malware.

Propagation

The said .INF file contains the following strings:

;{garbage}
[autorun]
open=.\RECYCLER\S-1-5-21-3441485041-918478196-174860263-1004\run.exe
icon=%SystemRoot%\system32\SHELL32.dll,4
action={byte string}
shell\open={byte string}(O)
shell\open\command=.\RECYCLER\S-1-5-21-3441485041-918478196-174860263-1004\run.exe
shell\open\default=1;
;{garbage}

Other Details

This Trojan automatically executes the following files when a user opens a drive:

  • {drive letter}:\RECYCLER\S-1-5-21-3441485041-918478196-174860263-1004\run.exe

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

11.164.05

FIRST VSAPI PATTERN DATE:

22 Sep 2014

VSAPI OPR PATTERN File:

11.165.00

VSAPI OPR PATTERN Date:

23 Sep 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

Scan your computer with your Trend Micro product to delete files detected as INF_OTORUN.VBFV. 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.