HackTool - RedMimicry Winnti Playbook Execution

Severity: high
Author: Alexander Rausch
Source: upstream

Detects actions caused by the RedMimicry Winnti playbook a automated breach emulations utility

MITRE ATT&CK coverage

Tactic	Techniques
Execution	`T1059.003` Command and Scripting Interpreter: Windows Command Shell, `T1106` Native API
Defense Evasion	`T1218.011` System Binary Proxy Execution: Rundll32

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation
Security-Auditing	4688	A new process has been created.

Stages and Predicates

Stage 1: `selection`

or:
CommandLine|contains: '\Windows\Temp\tmp.bat'
CommandLine|contains: gthread-3.6.dll
CommandLine|contains: sigcmm-2.4.dll
or:
Image|endswith: '\cmd.exe'
Image|endswith: '\rundll32.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.