1type: trigger
2name: sigmahq/proc_creation_win_hktl_cobaltstrike_process_patterns
3description: |
4  Detects potential process patterns related to Cobalt Strike beacon activity
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && (evt.Parsed.CommandLine endsWith 'cmd.exe /C whoami' && evt.Parsed.ParentImage startsWith 'C:\\Temp\\' || (evt.Parsed.ParentImage endsWith '\\runonce.exe' || evt.Parsed.ParentImage endsWith '\\dllhost.exe') && evt.Parsed.CommandLine contains 'cmd.exe /c echo' && evt.Parsed.CommandLine contains '> \\\\.\\pipe' || evt.Parsed.ParentCommandLine contains 'cmd.exe /C echo' && evt.Parsed.ParentCommandLine contains ' > \\\\.\\pipe' && evt.Parsed.CommandLine endsWith 'conhost.exe 0xffffffff -ForceV1' || evt.Parsed.ParentCommandLine endsWith '/C whoami' && evt.Parsed.CommandLine endsWith 'conhost.exe 0xffffffff -ForceV1')
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1059
15
16  label: "Potential CobaltStrike Process Patterns"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24