Operator Bloopers Cobalt Strike Commands

Severity: high
Author: _pete_0, TheDFIRReport
Source: upstream

Detects use of Cobalt Strike commands accidentally entered in the CMD shell

MITRE ATT&CK coverage

Tactic	Techniques
Execution	`T1059.003` Command and Scripting Interpreter: Windows Command Shell

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `all of selection_img`

or:
Image|endswith: '\cmd.exe'
OriginalFileName: Cmd.Exe

Stage 2: `all of selection_cli`

or:
CommandLine|contains: dcsync
CommandLine|contains: execute-assembly
CommandLine|contains: getsystem
CommandLine|contains: logonpasswords
CommandLine|contains: make_token
CommandLine|contains: psinject
CommandLine|contains: remote-exec
CommandLine|contains: rev2self
CommandLine|contains: spawnas
or:
CommandLine|startswith: 'c:\windows\system32\cmd.exe'
CommandLine|startswith: 'cmd '
CommandLine|startswith: cmd.exe

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

Field	Kind	Values
`CommandLine`	match	`dcsync` `execute-assembly` `getsystem` `logonpasswords` `make_token` `psinject` `remote-exec` `rev2self` `spawnas`
`CommandLine`	starts_with	`c:\windows\system32\cmd.exe` `cmd` `cmd.exe`
`Image`	ends_with	`\cmd.exe` corpus 92 (sigma 92)
`OriginalFileName`	eq	`Cmd.Exe` corpus 32 (sigma 30, splunk 2)