Antivirus Remote Access Tool Signature Matches Known RAT Names

Alerts on antivirus detections referencing multiple known RAT family signature names in the event signature field.

FreeReviewedSigma · Critical · v5

Category: antivirus
Author: Arnim Rupp (Nextron Systems) (SigmaHQ), DRL 1.1
Published: 2026-06-15
Updated: 2026-07-31

ATT&CK techniques

Execution → C2

Recon
Resource Dev
Initial Access
Execution
- T1203Exploitation for Client Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1219Remote Access Tools
Exfiltration
Impact

What it detects

This rule flags antivirus alerts where the signature text contains names of known remote access tools and RAT families. Such matches are important because RAT-related malware is commonly used for command-and-control and remote control of compromised systems, even when antivirus has blocked the payload. The detection relies on antivirus alert telemetry that includes a signature field containing the specified tool names.

Reporting behind it

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Possible AnyDesk RMM Silent MSI Installation via Windows Installer (via process_creation)

Suspicious Outbound Connection To MoonPeak C2 High Ports

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Antivirus Remote Access Tool Signature Matches Known RAT Names

Pivot detection · T1219 · 9 related

Changelog

v5
Candidate ingested via manual entry.2026-07-31
v4
Candidate ingested via manual entry.2026-07-31
v3
Candidate ingested via manual entry.2026-07-31
v2
Candidate ingested via manual entry.2026-07-31
v1
No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

antivirus-remote-access-tool-detections-by-malware-family-signatures-agentb-agen-97233998

title: Antivirus Remote Access Tool Signature Matches Known RAT Names
id: fb212791-338d-490d-adbf-5ed57922ab4f
status: experimental
description: This rule flags antivirus alerts where the signature text contains names of known remote access tools and RAT families. Such matches are important because RAT-related malware is commonly used for command-and-control and remote control of compromised systems, even when antivirus has blocked the payload. The detection relies on antivirus alert telemetry that includes a signature field containing the specified tool names.
references:
  - https://www.nextron-systems.com/?s=antivirus
  - https://www.virustotal.com/gui/file/d9669f7e3eb3a9cdf6a750eeb2ba303b5ae148a43e36546896f1d1801e912466
  - https://github.com/SigmaHQ/sigma/blob/master/rules/category/antivirus/av_remote_access_toolkit.yml
author: Arnim Rupp (Nextron Systems), Huntrule Team
date: 2026-06-15
tags:
  - attack.execution
  - attack.t1203
  - attack.command-and-control
  - attack.t1219.002
logsource:
  category: antivirus
detection:
  selection:
    Signature|contains:
      - AgentB
      - AgentTesla
      - AMRat
      - Ammyy
      - AsyncRAT
      - Bandook
      - Bitrat
      - Bladabindi
      - Connectwise
      - CyberGate
      - DarkComet
      - DCrat
      - Delf
      - DokStorm
      - Egairtigado
      - Gh0st
      - Gorat
      - GodRat
      - Jalapeno
      - LummaC2
      - Minirat
      - Netwire
      - NanoCore
      - NJRat
      - Paralax
      - PlugX
      - Pulsar
      - Quasar
      - Remcos
      - Ravartar
      - RemoteAdmin
      - RemoteTool
      - revengeRAT
      - rokRAT
      - salatstealer
      - Salgorea
      - SmokedHam
      - TigerRat
      - Tzeebot
      - WarZone
      - VenomRAT
      - Vidar
      - Wirenet
      - XWorm
      - Zapchast
      - Zegost
  condition: selection
falsepositives:
  - Unlikely
level: critical
license: DRL-1.1
related:
  - id: 97233998-3838-4581-88c6-f1d19d3993fb
    type: derived

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