Sigma rule: Potential Compromised 3CXDesktopApp Beaconing Activity - Proxy

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-9cd8b9efea02, updated 2023-05-18T00:00:00.000Z.

Rule

Title
Potential Compromised 3CXDesktopApp Beaconing Activity - Proxy
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-03-29
Modified
2023-05-18
File
rules-emerging-threats/2023/TA/3CX-Supply-Chain/proxy_malware_3cx_compromise_c2_beacon_activity.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects potential beaconing activity to domains related to 3CX 3CXDesktopApp compromise

Log source

category
proxy

Detection

selection:
    cs-host|contains:
        - 'akamaicontainer.com'
        - 'akamaitechcloudservices.com'
        - 'azuredeploystore.com'
        - 'azureonlinecloud.com'
        - 'azureonlinestorage.com'
        - 'dunamistrd.com'
        - 'glcloudservice.com'
        - 'journalide.org'
        - 'msedgepackageinfo.com'
        - 'msstorageazure.com'
        - 'msstorageboxes.com'
        - 'officeaddons.com'
        - 'officestoragebox.com'
        - 'pbxcloudeservices.com'
        - 'pbxphonenetwork.com'
        - 'pbxsources.com'
        - 'qwepoi123098.com'
        - 'sbmsa.wiki'
        - 'sourceslabs.com'
        - 'visualstudiofactory.com'
        - 'zacharryblogs.com'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.command-and-control
  • detection.emerging-threats

Related rules

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/TA/3CX-Supply-Chain/proxy_malware_3cx_compromise_c2_beacon_activity.yml

Sources and licences

  • SigmaHQ

    "Potential Compromised 3CXDesktopApp Beaconing Activity - Proxy" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/TA/3CX-Supply-Chain/proxy_malware_3cx_compromise_c2_beacon_activity.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Potential Compromised 3CXDesktopApp Beaconing Activity - Proxy",
entity page, dataset version ref-9cd8b9efea02, updated 2023-05-18T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/3c4b3bbf-36b4-470c-b6cf-f07e8b1c7e26 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 3c4b3bbf-36b4-470c-b6cf-f07e8b1c7e26, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.