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HackTool.Win64.NETCAT.A

June 25, 2024
 Analysis by: Neljorn Nathaniel Aguas
 ALIASES:

RemoteAdmin.Win32.NetCat.bnr (KASPERSKY)

 PLATFORM:

Windows

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted: No

  • 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.

It does not have any propagation routine.

It does not have any backdoor routine.

It does not have any information-stealing capability.

  TECHNICAL DETAILS

File Size:

45,272 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

03 Jun 2024

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.

Propagation

This Hacking Tool does not have any propagation routine.

Backdoor Routine

This Hacking Tool does not have any backdoor routine.

Rootkit Capabilities

This Hacking Tool does not have rootkit capabilities.

Information Theft

This Hacking Tool does not have any information-stealing capability.

Other Details

This Hacking Tool does the following:

  • It can be used to do the following:
    • Connect to Remote Host
    • Listen for Inbound Connections
    • Scan Ports
    • Dump Traffic (Hex)
    • Enable Zero-I/O Mode
    • Execute Programs
    • Run in Background Mode
    • Set Delay Interval
    • Persist Listening
    • Randomize Ports
    • Specify Local Port
    • Specify Local Source Address
    • Configure Source-Routing
    • Switch to UDP Mode
    • Send CRLF
    • Enable Verbose Output
    • Handle TELNET Negotiation
    • Set Timeout
    • Use Numeric IP Addresses
  • Depending on the intentions of the malicious user, the effects of this hacking tool may vary. This hacking tool is a program that utilizes the following vulnerabilities:
  • It uses the following version of NetCat:
    • v1.12

It accepts the following parameters:

  • -d → detach from console, background mode.
  • -e prog → execute an inbound program.
  • -g gateway → source-routing hop point(s), up to 8.
  • -G num → source-routing pointer (4, 8, 12, ...).
  • -h → display help.
  • -i secs → delay interval for lines sent, ports scanned.
  • -l → listen mode for inbound connections.
  • -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.
  • -c → send CRLF instead of just LF.
  • -u → UDP mode.
  • -v → verbose mode (twice for 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:

2.633.00

SSAPI PATTERN Date:

21 Jun 2023

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.Win64.NETCAT.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 the following Trend Micro Support pages for more information:


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