Remote Access Tool - NetSupport Execution

Status: test
Severity: medium
Log source: category process_creation, product windows
Author: frack113
Source: github.com/SigmaHQ/sigma

An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks. These services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment. Remote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)

Known false positives

Legitimate use

MITRE ATT&CK coverage

Tactic	Techniques
Command & Control	`T1219.002` Remote Access Tools: Remote Desktop Software

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 1: Process creation

Rule body

title: Remote Access Tool - NetSupport Execution
id: 758ff488-18d5-4cbe-8ec4-02b6285a434f
status: test
description: |
    An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.
    These services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.
    Remote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md
author: frack113
date: 2022-09-25
modified: 2023-03-06
tags:
    - attack.command-and-control
    - attack.t1219.002
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Description: NetSupport Client Configurator
        - Product: NetSupport Remote Control
        - Company: NetSupport Ltd
        - OriginalFileName: PCICFGUI.EXE
    condition: selection
falsepositives:
    - Legitimate use
level: medium

Stages and Predicates

Stage 0: `condition`

selection

Stage 1: `selection`

selection:
    - Description: NetSupport Client Configurator
    - Product: NetSupport Remote Control
    - Company: NetSupport Ltd
    - OriginalFileName: PCICFGUI.EXE

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`Company`	eq	`NetSupport Ltd`	`field:"Company" kind:eq value:"NetSupport Ltd"`
`Description`	eq	`NetSupport Client Configurator`	`field:"Description" kind:eq value:"NetSupport Client Configurator"`
`OriginalFileName`	eq	`PCICFGUI.EXE`	`field:"OriginalFileName" kind:eq value:"PCICFGUI.EXE"`
`Product`	eq	`NetSupport Remote Control`	`field:"Product" kind:eq value:"NetSupport Remote Control"`