MITRE ATT&CK - Técnica

T1055.008: Ptrace System Calls

Ptrace System Calls (T1055.008) é uma técnica catalogada no MITRE ATT&CK Enterprise usada como referência para mapear comportamento adversário em auditorias de segurança.

Técnica T1055.008 Enterprise ATT&CK

Contexto para AppSec

Em uma auditoria de AppSec, Ptrace System Calls 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 e Privilege Escalation. As plataformas mapeadas pela MITRE incluem Linux. No Vigly, esse contexto ajuda a conectar evidências do repositório com priorização e remediação.

Tática/fase Stealth, Privilege Escalation
Plataformas MITRE Linux

Descrição oficial original do MITRE ATT&CK

Adversaries may inject malicious code into processes via ptrace (process trace) system calls in order to evade process-based defenses as well as possibly elevate privileges. Ptrace system call injection is a method of executing arbitrary code in the address space of a separate live process. Ptrace system call injection involves attaching to and modifying a running process. The ptrace system call enables a debugging process to observe and control another process (and each individual thread), including changing memory and register values. Ptrace system call injection is commonly performed by writing arbitrary code into a running process (ex: malloc) then invoking that memory with PTRACE_SETREGS to set the register containing the next instruction to execute. Ptrace system call injection can also be done with PTRACE_POKETEXT/PTRACE_POKEDATA, which copy data to a specific address in the target processes’ memory (ex: the current address of the next instruction). Ptrace system call injection may not be possible targeting processes that are non-child processes and/or have higher-privileges. Running code in the context of another process may allow access to the process's memory, system/network resources, and possibly elevated privileges. Execution via ptrace system call injection may also evade detection from security products since the execution is masked under a legitimate process.

Ver fonte oficial no MITRE ATT&CK

Como o Vigly audita a técnica Ptrace System Calls 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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