Sigma rule: Potential Compromised 3CXDesktopApp Execution

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-d7f7296b2eb2, updated 2024-11-23T00:00:00.000Z.

Rule

Title
Potential Compromised 3CXDesktopApp Execution
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-03-29
Modified
2024-11-23
File
rules-emerging-threats/2023/TA/3CX-Supply-Chain/proc_creation_win_malware_3cx_compromise_execution.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects execution of known compromised version of 3CXDesktopApp

Log source

product
windows
category
process_creation

Detection

selection_hashes:
    Hashes|contains:
        # 3CX Desktop 18.12.407
        - 'SHA256=DDE03348075512796241389DFEA5560C20A3D2A2EAC95C894E7BBED5E85A0ACC'
        - 'SHA256=54004DFAA48CA5FA91E3304FB99559A2395301C570026450882D6AAD89132A02'
        - 'SHA256=D45674F941BE3CCA2FBC1AF42778043CC18CD86D95A2ECB9E6F0E212ED4C74AE'
        - 'SHA1=480DC408EF50BE69EBCF84B95750F7E93A8A1859'
        - 'SHA1=3B43A5D8B83C637D00D769660D01333E88F5A187'
        - 'SHA1=6285FFB5F98D35CD98E78D48B63A05AF6E4E4DEA'
        - 'MD5=BB915073385DD16A846DFA318AFA3C19'
        - 'MD5=08D79E1FFFA244CC0DC61F7D2036ACA9'
        - 'MD5=4965EDF659753E3C05D800C6C8A23A7A'
        # 3CX Desktop 18.12.416
        - 'SHA256=FAD482DED2E25CE9E1DD3D3ECC3227AF714BDFBBDE04347DBC1B21D6A3670405'
        - 'SHA256=5D99EFA36F34AA6B43CD81E77544961C5C8D692C96059FEF92C2DF2624550734'
        - 'SHA256=A60A61BF844BC181D4540C9FAC53203250A982E7C3AD6153869F01E19CC36203'
        - 'SHA1=E272715737B51C01DC2BED0F0AEE2BF6FEEF25F1'
        - 'SHA1=8433A94AEDB6380AC8D4610AF643FB0E5220C5CB'
        - 'SHA1=413D9CBFCBF8D1E8304EAB0AA5484F5EEC5185F5'
        - 'MD5=9833A4779B69B38E3E51F04E395674C6'
        - 'MD5=704DB9184700481A56E5100FB56496CE'
        - 'MD5=8EE6802F085F7A9DF7E0303E65722DC0'
        # 3CXDesktopApp MSI
        - 'SHA256=AA124A4B4DF12B34E74EE7F6C683B2EBEC4CE9A8EDCF9BE345823B4FDCF5D868'
        - 'SHA256=59E1EDF4D82FAE4978E97512B0331B7EB21DD4B838B850BA46794D9C7A2C0983'
        - 'SHA1=BEA77D1E59CF18DCE22AD9A2FAD52948FD7A9EFA'
        - 'SHA1=BFECB8CE89A312D2EF4AFC64A63847AE11C6F69E'
        - 'MD5=F3D4144860CA10BA60F7EF4D176CC736'
        - 'MD5=0EEB1C0133EB4D571178B2D9D14CE3E9'
selection_pe_1:
    - OriginalFileName: '3CXDesktopApp.exe'
    - Image|endswith: '\3CXDesktopApp.exe'
    - Product: '3CX Desktop App'
selection_pe_2:
    FileVersion|contains: '18.12.'
condition: all of selection_pe_* or selection_hashes

False positives (as the rule lists them)

  • Legitimate usage of 3CXDesktopApp

Tags

  • attack.stealth
  • attack.t1218
  • attack.execution
  • detection.emerging-threats

MITRE ATT&CK ids this rule names

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/proc_creation_win_malware_3cx_compromise_execution.yml

Sources and licences

  • SigmaHQ

    "Potential Compromised 3CXDesktopApp Execution" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/TA/3CX-Supply-Chain/proc_creation_win_malware_3cx_compromise_execution.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 Execution",
entity page, dataset version ref-d7f7296b2eb2, updated 2024-11-23T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/93bbde78-dc86-4e73-9ffc-ff8a384ca89c (accessed 2026-11-03).
Underlying source: SigmaHQ rule 93bbde78-dc86-4e73-9ffc-ff8a384ca89c, 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.