BKDR_FLODER.SMP

May 20, 2013
 Analysis by: Erika Bianca Mendoza
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This backdoor may be unknowingly downloaded by a user while visiting malicious websites.

It drops copies of itself into all the removable drives connected to an affected system.

  TECHNICAL DETAILS

File Size:

122,880 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

30 Sep 2011

Arrival Details

This backdoor may be unknowingly downloaded by a user while visiting malicious websites.

Installation

This backdoor drops the following files:

  • [removable drive]\RECYCLER.lnk

Propagation

This backdoor creates the following folders in all removable drives:

  • RECYCLER

It drops copies of itself into all the removable drives connected to an affected system.

Backdoor Routine

This backdoor connects to the following URL(s) to send and receive commands from a remote malicious user:

  • ng.{BLOCKED}hopperz11.com
  • ng.{BLOCKED}etallone.com
  • ng.{BLOCKED}loan.com

Other Details

This backdoor connects to the following URL(s) to get the affected system's IP address:

  • http://api.wipmania.com

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

8.464.15

FIRST VSAPI PATTERN DATE:

30 Sep 2011

VSAPI OPR PATTERN File:

8.465.00

VSAPI OPR PATTERN Date:

01 Oct 2011

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 BKDR_FLODER.SMP

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • [removable drive]\RECYCLER.lnk

Step 5

Search and delete the file detected as BKDR_FLODER.SMP

[ Learn More ]

Step 6

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.  
  • RECYCLER

Step 7

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


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