Analysis by: Mohammed Malubay
 Modified by: Clive Fuentebella
ALIASES:

Riskware/Nbtscan (FORTINET)

 PLATFORM:

Windows

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet

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

It requires being executed with a specific argument/parameter, an additional component, or in a specific environment in order to proceed with its intended routine.

  TECHNICAL DETAILS

File Size: 12,800 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 22 Oct 2020

Arrival Details

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

Other Details

This Hacking Tool does the following:

  • It scans for open NetBIOS nameservers on local or remote TCP/IP network.

It accepts the following parameters:

  • -V or --version - Shows version information
  • -f - Shows response from full NBT resource record
  • -H - Generates HTTP headers
  • -v - Toggles verbose debugging
  • -n - Toggles no looking up of inverse names of responding IP addresses
  • -p {Port} - Binds to UDP port
  • -m - Includes MAC address in response returned by -f
  • -T {Seconds} - Specifies timeout
  • -w {Milliseconds} - Waits for specified milliseconds after each write
  • -t {Number of tries} - Tries each address in specified number of tries
  • -1 - Uses Winsock 1
  • -P - Generates results in Perl hashref

It requires being executed with a specific argument/parameter, an additional component, or in a specific environment in order to proceed with its intended routine.

  SOLUTION

Minimum Scan Engine: 9.800
SSAPI PATTERN File: 2.347.00
SSAPI PATTERN Date: 29 Oct 2020

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 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 HackTool.Win32.Nbtscan.AI. 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 the following Trend Micro Support pages for more information:


Did this description help? Tell us how we did.