Analysis by: Janus Agcaoili
 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 arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size: 304,161 bytes
File Type: EXE
File Compression: UPX
Memory Resident: No
Initial Samples Received Date: 09 Mar 2014

Arrival Details

This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Dropping Routine

This spyware drops the following files:

  • "{Malware Path}\realip.exe" - Used to get IP. Deleted after use
  • "{Malware Path}\curl.exe" - Used for ftp upload. Deleted after use
  • "{Malware Path}\filgra.bat" - Responsible for gathering and sending data to ftp server. Deleted after use

Information Theft

This spyware gathers the following data:

  • Contents of files named "good*.txt" from drives "C" to "J"
  • IP Address

Stolen Information

This spyware saves the stolen information in the following file:

  • "{Malware Path}\{DATE} {(TIME)}.SNDR" - Deleted after upload

Drop Points

This spyware uploads files to the following File Transfer Protocol (FTP) sites:

  • ftp://debrup:toperharley@debrup.{BLOCKED}s.biz:22

Other Details

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

  • http://www.{BLOCKED}earch.com

It deletes itself after execution.

  SOLUTION

Minimum Scan Engine: 9.750
FIRST VSAPI PATTERN FILE: 10.654.03
FIRST VSAPI PATTERN DATE: 10 Mar 2014
VSAPI OPR PATTERN File: 10.655.00
VSAPI OPR PATTERN Date: 11 Mar 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 TSPY_FILGRATS.A. 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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