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HackTool.Win32.Netcat.SM

July 14, 2021
 Analysis by: Mc Justine De Guzman
 ALIASES:

HEUR:NetTool.Win32.NetCat.gen (KASPERSKY)

 PLATFORM:

Windows

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


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.

  TECHNICAL DETAILS

File Size:

61,440 bytes

File Type:

EXE

Initial Samples Received Date:

13 Jul 2021

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 accepts the following parameters:
    • nc [-options] hostname port[s] [ports] -> connect to somewhere
    • nc -l -p port [options] [hostname] [port] -> listen for inbound
  • It accepts the following options:
    • -d -> detach from console, background mode
    • -e prog -> inbound program to execute
    • -g gateway -> source-routing hop point[s], up to 8
    • -G num -> source-routing pointer: 4, 8, 12, ...
    • -h -> help
    • -i secs -> delay interval for lines sent, ports scan
    • -l -> listen mode, for inbound connects
    • -L -> listen harder, re-listen on socket close
    • -n -> numeric-only IP addresses, no DNS
    • -o file -> hex dump of traffic
    • -p port -> local port number
    • -r -> randomize local and remote ports
    • -s addr -> local source address
    • -t -> answer TELNET negotiation
    • -u -> UDP mode
    • -v -> verbose [use twice to be more verbose]
    • -w secs -> timeout for connects and final net reads
    • -z -> zero-I/O mode [used for scanning]

  SOLUTION

Minimum Scan Engine:

9.800

SSAPI PATTERN File:

2.425.00

SSAPI PATTERN Date:

08 Jul 2021

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Scan your computer with your Trend Micro product to delete files detected as HackTool.Win32.Netcat.SM. 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:


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