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GoToAssist Temporary Installation Artefact — Sigma Rule

Sigma rule 5d756aee-ad3e-4306-ad95-cb1abec48de2. GoToAssist Temporary Installation Artefact — Sigma Rule. 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)

Rule metadata and linked tags

testmediumfile_eventwindowsattack.command-and-controlattack.t1219.002

Author: frack113. Source status: test; severity: medium. Source dates: 2022-02-13 / not supplied.

{
  "category": "file_event",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 2ca16551d600e7ff659a58e6eff6de67be74770a9f6b729f55e0d05e0d5a6ad0

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: GoToAssist Temporary Installation Artefact
id: 5d756aee-ad3e-4306-ad95-cb1abec48de2
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#atomic-test-4---gotoassist-files-detected-test-on-windows
author: frack113
date: 2022-02-13
tags:
    - attack.command-and-control
    - attack.t1219.002
logsource:
    category: file_event
    product: windows
detection:
    selection:
        TargetFilename|contains: '\AppData\Local\Temp\LogMeInInc\GoToAssist Remote Support Expert\'
    condition: selection
falsepositives:
    - Legitimate use
level: medium

Original YAML and metadata in JSON

False positives

  • Legitimate use

Source references

Connected ecosystem references

Exact source-tagged techniques

Telemetry review

Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.

Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.