MITRE ATT&CK - Técnica

T1027.010: Command Obfuscation

Command Obfuscation (T1027.010) é uma técnica catalogada no MITRE ATT&CK Enterprise usada como referência para mapear comportamento adversário em auditorias de segurança.

Técnica T1027.010 Enterprise ATT&CK

Contexto para AppSec

Em uma auditoria de AppSec, Command Obfuscation deve ser usada para revisar caminhos em que código, configuração, dependências ou infraestrutura podem viabilizar o comportamento descrito pela MITRE. No ATT&CK, ela aparece em Stealth. As plataformas mapeadas pela MITRE incluem Linux, macOS e Windows. No Vigly, esse contexto ajuda a conectar evidências do repositório com priorização e remediação.

Tática/fase Stealth
Plataformas MITRE Linux, macOS, Windows

Descrição oficial original do MITRE ATT&CK

Adversaries may obfuscate content during command execution to impede detection. Command-line obfuscation is a method of making strings and patterns within commands and scripts more difficult to signature and analyze. This type of obfuscation can be included within commands executed by delivered payloads (e.g., Phishing and Drive-by Compromise) or interactively via Command and Scripting Interpreter. For example, adversaries may abuse syntax that utilizes various symbols and escape characters (such as spacing, ^, +. $, and %) to make commands difficult to analyze while maintaining the same intended functionality. Many languages support built-in obfuscation in the form of base64 or URL encoding. Adversaries may also manually implement command obfuscation via string splitting (“Wor”+“d.Application”), order and casing of characters (rev <<<'dwssap/cte/ tac'), globing (mkdir -p '/tmp/:&$NiA'), as well as various tricks involving passing strings through tokens/environment variables/input streams. Adversaries may also use tricks such as directory traversals to obfuscate references to the binary being invoked by a command (C:\voi\pcw\..\..\Windows\tei\qs\k\..\..\..\system32\erool\..\wbem\wg\je\..\..\wmic.exe shadowcopy delete). Tools such as Invoke-Obfuscation and Invoke-DOSfucation have also been used to obfuscate commands.

Ver fonte oficial no MITRE ATT&CK

Como o Vigly audita a técnica Command Obfuscation automaticamente na sua pipeline

O Vigly cruza sinais de SAST, modelagem de ameaças, regras de negócio e evidências do repositório para priorizar riscos reais antes que eles cheguem à produção.

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