HKTL_PORTSCAN

 Analysis by: Sabrina Lei Sioting

 ALIASES:

not-a-virus:NetTool.Win32.Portscan.be (Kaspersky)

 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


This hacking tool arrives as a component bundled with malware/grayware packages. It may be manually installed by a user.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

16 Jan 2012

Arrival Details

This hacking tool arrives as a component bundled with malware/grayware packages.

It may be manually installed by a user.

Other Details

This hacking tool does the following:

  • It is a command line tool that scans an IP range for NETBIOS devices on a local or remote TCP/IP network.
  • It requires the following input in the command line:

    {grayware file path and name} {options} {range}

    where {options} can be any of the following:

    • -h hex display
    • -M Maximum concurrent IPs being scanned
    • -m Maximum retry count per IP
    • -w Controls autowait time
    • -i Minimum interval time between two queries
    • -t Timeout in milliseconds
    • -p Source port to use
    • -s Separator for output report
    • -H Human representation of service instead of code
    • -V See version


    where {range} is the target IP range.

  SOLUTION

Minimum Scan Engine:

9.200

SSAPI PATTERN File:

1.254.31

SSAPI PATTERN Date:

16 Jan 2012

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 HKTL_PORTSCAN. 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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