Sigma rule: TeamViewer Domain Query By Non-TeamViewer Application

Rule

Title

TeamViewer Domain Query By Non-TeamViewer Application

Status

test

Level

medium

Author

Florian Roth (Nextron Systems)

Date

2022-01-30

Modified

2023-09-18

File

rules/windows/dns_query/dns_query_win_teamviewer_domain_query_by_uncommon_app.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects DNS queries to a TeamViewer domain only resolved by a TeamViewer client by an image that isn't named TeamViewer (sometimes used by threat actors for obfuscation)

Log source

product

windows

category

dns_query

Detection

selection:
    QueryName:
        - 'taf.teamviewer.com'
        - 'udp.ping.teamviewer.com'
filter_main_teamviewer:
    # Note: To avoid evasion based on similar names. Best add full install location of TeamViewer
    Image|contains: 'TeamViewer'
condition: selection and not 1 of filter_main_*

False positives (as the rule lists them)

• Unknown binary names of TeamViewer
• Depending on the environment the rule might require some initial tuning before usage to avoid FP with third party applications

Tags

• attack.command-and-control
• attack.t1219.002

MITRE ATT&CK ids this rule names

• T1219.002

References

• https://www.teamviewer.com/en-us/

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/dns_query/dns_query_win_teamviewer_domain_query_by_uncommon_app.yml