Potential Suspicious Child Process Of 3CXDesktopApp

 1title: Potential Suspicious Child Process Of 3CXDesktopApp
 2id: 63f3605b-979f-48c2-b7cc-7f90523fed88
 3related:
 4    - id: 3c4b3bbf-36b4-470c-b6cf-f07e8b1c7e26 # Proxy C2
 5      type: similar
 6    - id: 76bc1601-9546-4b75-9419-06e0e8d10651 # Proxy GH
 7      type: similar
 8    - id: bd03a0dc-5d93-49eb-b2e8-2dfd268600f8 # DNS C2
 9      type: similar
10    - id: 51eecf75-d069-43c7-9ea2-63f75499edd4 # net_connection C2
11      type: similar
12    - id: 93bbde78-dc86-4e73-9ffc-ff8a384ca89c # ProcCreation Exec
13      type: similar
14    - id: e7581747-1e44-4d4b-85a6-0db0b4a00f2a # ProcCreation Update
15      type: similar
16    - id: d0b65ad3-e945-435e-a7a9-438e62dd48e9 # ImageLoad
17      type: similar
18status: test
19description: Detects potential suspicious child processes of "3CXDesktopApp.exe". Which could be related to the 3CXDesktopApp supply chain compromise
20references:
21    - https://www.reddit.com/r/crowdstrike/comments/125r3uu/20230329_situational_awareness_crowdstrike/
22    - https://www.crowdstrike.com/blog/crowdstrike-detects-and-prevents-active-intrusion-campaign-targeting-3cxdesktopapp-customers/
23author: Nasreddine Bencherchali (Nextron Systems)
24date: 2023/03/29
25tags:
26    - attack.command_and_control
27    - attack.execution
28    - attack.t1218
29    - detection.emerging_threats
30logsource:
31    category: process_creation
32    product: windows
33detection:
34    selection:
35        ParentImage|endswith: '\3CXDesktopApp.exe'
36        Image|endswith:
37            - '\cmd.exe'
38            - '\cscript.exe'
39            - '\mshta.exe'
40            - '\powershell.exe'
41            - '\pwsh.exe'
42            - '\regsvr32.exe'
43            - '\rundll32.exe'
44            - '\wscript.exe'
45    condition: selection
46falsepositives:
47    - Unknown
48level: high