From f961f1eb9b1eb41feee5cf559cb189ba391461b8 Mon Sep 17 00:00:00 2001 From: Adir Shitrit Date: Sat, 8 Nov 2025 11:47:27 +0200 Subject: [PATCH] add anti-analysis evasion detection capabilities --- ghost-core/src/evasion.rs | 1154 +++++++++++++++++++++++++++++++++++++ 1 file changed, 1154 insertions(+) create mode 100644 ghost-core/src/evasion.rs diff --git a/ghost-core/src/evasion.rs b/ghost-core/src/evasion.rs new file mode 100644 index 0000000..c096fd1 --- /dev/null +++ b/ghost-core/src/evasion.rs @@ -0,0 +1,1154 @@ +use std::collections::HashMap; +use std::time::{SystemTime, Duration}; +use crate::{ProcessInfo, MemoryRegion, ThreadInfo, MemoryProtection}; + +/// Advanced Evasion Detection Module +/// Detects sophisticated anti-analysis and evasion techniques +pub struct EvasionDetector { + timing_analyzer: TimingAnalyzer, + environment_checker: EnvironmentChecker, + behavior_analyzer: BehaviorAnalyzer, + obfuscation_detector: ObfuscationDetector, +} + +#[derive(Debug, Clone)] +pub struct EvasionResult { + pub evasion_techniques: Vec, + pub confidence: f32, + pub sophistication_score: f32, + pub anti_analysis_indicators: Vec, +} + +#[derive(Debug, Clone)] +pub struct EvasionTechnique { + pub technique_name: String, + pub mitre_id: String, + pub description: String, + pub confidence: f32, + pub indicators: Vec, + pub severity: EvasionSeverity, +} + +#[derive(Debug, Clone, PartialEq)] +pub enum EvasionSeverity { + Low, // Basic evasion attempts + Medium, // Moderate sophistication + High, // Advanced techniques + Critical, // Nation-state level evasion +} + +/// Timing-based evasion detection +pub struct TimingAnalyzer { + execution_timings: HashMap>, + sleep_patterns: HashMap>, +} + +#[derive(Debug, Clone)] +pub struct ExecutionTiming { + pub start_time: SystemTime, + pub duration: Duration, + pub operation_type: OperationType, +} + +#[derive(Debug, Clone)] +pub enum OperationType { + MemoryAllocation, + ProcessCreation, + FileAccess, + NetworkConnection, + RegistryAccess, +} + +#[derive(Debug, Clone)] +pub struct SleepPattern { + pub timestamp: SystemTime, + pub duration: Duration, + pub context: SleepContext, +} + +#[derive(Debug, Clone)] +pub enum SleepContext { + BeforeInjection, + AfterDetection, + BetweenOperations, + RandomDelay, +} + +/// Environment-based evasion detection +pub struct EnvironmentChecker { + vm_indicators: Vec, + debugger_checks: Vec, + sandbox_signatures: Vec, +} + +#[derive(Debug, Clone)] +pub struct VmIndicator { + pub indicator_type: VmIndicatorType, + pub detection_method: String, + pub confidence: f32, +} + +#[derive(Debug, Clone)] +pub enum VmIndicatorType { + ProcessName, // VM-related processes + RegistryKey, // VM registry artifacts + FilePath, // VM file system artifacts + HardwareId, // VM hardware identifiers + Timing, // VM timing anomalies +} + +#[derive(Debug, Clone)] +pub struct DebuggerCheck { + pub check_type: DebuggerCheckType, + pub detection_api: String, + pub bypass_difficulty: BypassDifficulty, +} + +#[derive(Debug, Clone)] +pub enum DebuggerCheckType { + IsDebuggerPresent, + CheckRemoteDebuggerPresent, + NtQueryInformationProcess, + OutputDebugString, + SetUnhandledExceptionFilter, + ThreadHideFromDebugger, +} + +#[derive(Debug, Clone)] +pub enum BypassDifficulty { + Trivial, // Easy to bypass + Moderate, // Requires knowledge + Difficult, // Advanced techniques needed + Expert, // Very sophisticated bypass required +} + +#[derive(Debug, Clone)] +pub struct SandboxSignature { + pub signature_name: String, + pub detection_pattern: String, + pub evasion_method: String, +} + +/// Behavioral analysis for evasion detection +pub struct BehaviorAnalyzer { + api_hooking_detector: ApiHookingDetector, + execution_flow_analyzer: ExecutionFlowAnalyzer, + resource_usage_monitor: ResourceUsageMonitor, +} + +#[derive(Debug, Clone)] +pub struct ApiHookingDetector { + hooked_functions: HashMap, + inline_hooks: Vec, + iat_modifications: Vec, +} + +#[derive(Debug, Clone)] +pub struct HookInfo { + pub function_name: String, + pub original_address: usize, + pub hook_address: usize, + pub hook_type: HookType, + pub detected_at: SystemTime, +} + +#[derive(Debug, Clone)] +pub enum HookType { + InlineHook, + IatHook, + EatHook, + SsdtHook, + VtableHook, +} + +#[derive(Debug, Clone)] +pub struct InlineHook { + pub target_function: String, + pub hook_bytes: Vec, + pub original_bytes: Vec, + pub hook_length: usize, +} + +#[derive(Debug, Clone)] +pub struct IatModification { + pub module_name: String, + pub function_name: String, + pub original_address: usize, + pub modified_address: usize, +} + +#[derive(Debug, Clone)] +pub struct ExecutionFlowAnalyzer { + control_flow_integrity: ControlFlowIntegrity, + return_address_verification: ReturnAddressVerification, + stack_analysis: StackAnalysis, +} + +#[derive(Debug, Clone)] +pub struct ControlFlowIntegrity { + pub indirect_calls: Vec, + pub rop_gadgets: Vec, + pub jop_gadgets: Vec, +} + +#[derive(Debug, Clone)] +pub struct IndirectCall { + pub source_address: usize, + pub target_address: usize, + pub call_type: CallType, + pub validation_result: ValidationResult, +} + +#[derive(Debug, Clone)] +pub enum CallType { + FunctionPointer, + VirtualCall, + ReturnAddress, + ExceptionHandler, +} + +#[derive(Debug, Clone)] +pub enum ValidationResult { + Valid, + Suspicious, + Invalid, + Bypassed, +} + +#[derive(Debug, Clone)] +pub struct RopGadget { + pub address: usize, + pub instructions: String, + pub gadget_type: GadgetType, +} + +#[derive(Debug, Clone)] +pub struct JopGadget { + pub address: usize, + pub dispatch_instruction: String, + pub gadget_chain: Vec, +} + +#[derive(Debug, Clone)] +pub enum GadgetType { + PopRet, + MovRet, + XchgRet, + ArithmeticRet, + Syscall, +} + +#[derive(Debug, Clone)] +pub struct ReturnAddressVerification { + pub shadow_stack: Vec, + pub call_stack: Vec, + pub anomalies: Vec, +} + +#[derive(Debug, Clone)] +pub struct StackFrame { + pub return_address: usize, + pub frame_pointer: usize, + pub function_name: Option, + pub validation_status: ValidationResult, +} + +#[derive(Debug, Clone)] +pub struct StackAnomaly { + pub anomaly_type: StackAnomalyType, + pub detected_address: usize, + pub expected_address: Option, + pub confidence: f32, +} + +#[derive(Debug, Clone)] +pub enum StackAnomalyType { + ReturnAddressMismatch, + StackPivot, + BufferOverflow, + StackSpraying, + HeapSpraying, +} + +#[derive(Debug, Clone)] +pub struct StackAnalysis { + pub stack_regions: Vec, + pub guard_pages: Vec, + pub canary_values: Vec, +} + +#[derive(Debug, Clone)] +pub struct StackRegion { + pub base_address: usize, + pub size: usize, + pub protection: MemoryProtection, + pub usage_pattern: StackUsagePattern, +} + +#[derive(Debug, Clone)] +pub enum StackUsagePattern { + Normal, + Excessive, + Unusual, + Malicious, +} + +#[derive(Debug, Clone)] +pub struct GuardPage { + pub address: usize, + pub status: GuardPageStatus, +} + +#[derive(Debug, Clone)] +pub enum GuardPageStatus { + Intact, + Bypassed, + Removed, + Modified, +} + +#[derive(Debug, Clone)] +pub struct StackCanary { + pub address: usize, + pub original_value: u64, + pub current_value: u64, + pub integrity_status: CanaryStatus, +} + +#[derive(Debug, Clone)] +pub enum CanaryStatus { + Intact, + Corrupted, + Bypassed, + Missing, +} + +/// Resource usage monitoring for evasion detection +#[derive(Debug, Clone)] +pub struct ResourceUsageMonitor { + pub cpu_usage: CpuUsagePattern, + pub memory_usage: MemoryUsagePattern, + pub network_usage: NetworkUsagePattern, + pub file_system_usage: FileSystemUsagePattern, +} + +#[derive(Debug, Clone)] +pub struct CpuUsagePattern { + pub baseline_usage: f32, + pub current_usage: f32, + pub usage_spikes: Vec, + pub idle_periods: Vec, +} + +#[derive(Debug, Clone)] +pub struct UsageSpike { + pub timestamp: SystemTime, + pub peak_usage: f32, + pub duration: Duration, + pub context: SpikeContext, +} + +#[derive(Debug, Clone)] +pub enum SpikeContext { + CryptographicOperation, + Deobfuscation, + AntiAnalysis, + PayloadExecution, + Unknown, +} + +#[derive(Debug, Clone)] +pub struct IdlePeriod { + pub start_time: SystemTime, + pub duration: Duration, + pub reason: IdleReason, +} + +#[derive(Debug, Clone)] +pub enum IdleReason { + DelayedExecution, + EnvironmentChecking, + WaitingForTrigger, + Evasion, + Normal, +} + +#[derive(Debug, Clone)] +pub struct MemoryUsagePattern { + pub allocation_patterns: Vec, + pub deallocation_patterns: Vec, + pub fragmentation_level: f32, + pub heap_spray_indicators: Vec, +} + +#[derive(Debug, Clone)] +pub struct AllocationPattern { + pub size: usize, + pub frequency: u32, + pub protection: MemoryProtection, + pub purpose: AllocationPurpose, +} + +#[derive(Debug, Clone)] +pub enum AllocationPurpose { + NormalOperation, + ShellcodeStorage, + DataObfuscation, + HeapSpraying, + StackSpraying, +} + +#[derive(Debug, Clone)] +pub struct DeallocationPattern { + pub timing: DeallocationTiming, + pub completeness: DeallocationCompleteness, +} + +#[derive(Debug, Clone)] +pub enum DeallocationTiming { + Immediate, + Delayed, + Never, + Conditional, +} + +#[derive(Debug, Clone)] +pub enum DeallocationCompleteness { + Complete, + Partial, + Minimal, + None, +} + +#[derive(Debug, Clone)] +pub struct HeapSprayIndicator { + pub spray_size: usize, + pub spray_pattern: Vec, + pub target_addresses: Vec, + pub success_probability: f32, +} + +#[derive(Debug, Clone)] +pub struct NetworkUsagePattern { + pub connection_patterns: Vec, + pub data_exfiltration: Vec, + pub command_control: Vec, +} + +#[derive(Debug, Clone)] +pub struct ConnectionPattern { + pub destination: String, + pub port: u16, + pub protocol: String, + pub frequency: ConnectionFrequency, + pub purpose: ConnectionPurpose, +} + +#[derive(Debug, Clone)] +pub enum ConnectionFrequency { + SingleConnection, + Periodic, + Burst, + Continuous, +} + +#[derive(Debug, Clone)] +pub enum ConnectionPurpose { + CommandControl, + DataExfiltration, + UpdateCheck, + Reconnaissance, + Tunneling, +} + +#[derive(Debug, Clone)] +pub struct ExfiltrationIndicator { + pub data_volume: usize, + pub transfer_rate: f32, + pub encryption_used: bool, + pub steganography_used: bool, +} + +#[derive(Debug, Clone)] +pub struct C2Indicator { + pub communication_protocol: String, + pub beacon_interval: Duration, + pub jitter_factor: f32, + pub encryption_method: Option, +} + +#[derive(Debug, Clone)] +pub struct FileSystemUsagePattern { + pub file_operations: Vec, + pub persistence_mechanisms: Vec, + pub artifact_cleanup: ArtifactCleanup, +} + +#[derive(Debug, Clone)] +pub struct FileOperation { + pub operation_type: FileOperationType, + pub file_path: String, + pub frequency: u32, + pub timing_pattern: TimingPattern, +} + +#[derive(Debug, Clone)] +pub enum FileOperationType { + Create, + Read, + Write, + Delete, + Modify, + Rename, + Copy, +} + +#[derive(Debug, Clone)] +pub enum TimingPattern { + Immediate, + Scheduled, + Triggered, + Random, +} + +#[derive(Debug, Clone)] +pub struct PersistenceMechanism { + pub mechanism_type: PersistenceType, + pub location: String, + pub stealth_level: StealthLevel, +} + +#[derive(Debug, Clone)] +pub enum PersistenceType { + RegistryRun, + ServiceInstallation, + ScheduledTask, + StartupFolder, + DllHijacking, + ProcessHollowing, +} + +#[derive(Debug, Clone)] +pub enum StealthLevel { + Obvious, + Hidden, + Obfuscated, + Rootkit, +} + +#[derive(Debug, Clone)] +pub struct ArtifactCleanup { + pub cleanup_thoroughness: CleanupThoroughness, + pub timing: CleanupTiming, + pub methods_used: Vec, +} + +#[derive(Debug, Clone)] +pub enum CleanupThoroughness { + None, + Minimal, + Moderate, + Comprehensive, + Forensic, +} + +#[derive(Debug, Clone)] +pub enum CleanupTiming { + Never, + OnExit, + Periodic, + OnDetection, + Immediate, +} + +#[derive(Debug, Clone)] +pub enum CleanupMethod { + SimpleDelete, + SecureDelete, + Overwrite, + MetadataWipe, + TimestampModification, +} + +/// Code obfuscation and packing detection +pub struct ObfuscationDetector { + packer_signatures: Vec, + obfuscation_patterns: Vec, + encryption_indicators: Vec, +} + +#[derive(Debug, Clone)] +pub struct PackerSignature { + pub packer_name: String, + pub signature_bytes: Vec, + pub signature_offset: usize, + pub unpacking_method: UnpackingMethod, +} + +#[derive(Debug, Clone)] +pub enum UnpackingMethod { + RuntimeUnpacking, + StaticUnpacking, + MemoryDumping, + DynamicAnalysis, +} + +#[derive(Debug, Clone)] +pub struct ObfuscationPattern { + pub pattern_type: ObfuscationType, + pub detection_signature: String, + pub deobfuscation_difficulty: DeobfuscationDifficulty, +} + +#[derive(Debug, Clone)] +pub enum ObfuscationType { + StringObfuscation, + ControlFlowObfuscation, + DataObfuscation, + ApiObfuscation, + InstructionSubstitution, + Polymorphism, + Metamorphism, +} + +#[derive(Debug, Clone)] +pub enum DeobfuscationDifficulty { + Trivial, + Easy, + Moderate, + Hard, + Extreme, +} + +#[derive(Debug, Clone)] +pub struct EncryptionIndicator { + pub encryption_type: EncryptionType, + pub key_derivation: KeyDerivation, + pub entropy_level: f32, +} + +#[derive(Debug, Clone)] +pub enum EncryptionType { + XOR, + AES, + RC4, + ChaCha20, + Custom, + Nested, +} + +#[derive(Debug, Clone)] +pub enum KeyDerivation { + Hardcoded, + Environmental, + Algorithmic, + NetworkBased, + UserInput, +} + +impl EvasionDetector { + pub fn new() -> Self { + Self { + timing_analyzer: TimingAnalyzer::new(), + environment_checker: EnvironmentChecker::new(), + behavior_analyzer: BehaviorAnalyzer::new(), + obfuscation_detector: ObfuscationDetector::new(), + } + } + + /// Comprehensive evasion analysis + pub fn analyze_evasion( + &mut self, + process: &ProcessInfo, + memory_regions: &[MemoryRegion], + threads: &[ThreadInfo], + ) -> EvasionResult { + let mut evasion_techniques = Vec::new(); + let mut confidence = 0.0f32; + let mut sophistication_score = 0.0f32; + let mut anti_analysis_indicators = Vec::new(); + + // Timing-based evasion analysis + let timing_result = self.timing_analyzer.analyze_timing_evasion(process, threads); + if !timing_result.techniques.is_empty() { + evasion_techniques.extend(timing_result.techniques); + confidence += timing_result.confidence * 0.3; + sophistication_score += timing_result.sophistication * 0.25; + } + + // Environment checking analysis + let env_result = self.environment_checker.check_environment_evasion(process); + if !env_result.techniques.is_empty() { + evasion_techniques.extend(env_result.techniques); + confidence += env_result.confidence * 0.3; + sophistication_score += env_result.sophistication * 0.25; + } + + // Behavioral analysis + let behavior_result = self.behavior_analyzer.analyze_behavior_evasion( + process, memory_regions, threads + ); + if !behavior_result.techniques.is_empty() { + evasion_techniques.extend(behavior_result.techniques); + confidence += behavior_result.confidence * 0.25; + sophistication_score += behavior_result.sophistication * 0.3; + } + + // Obfuscation analysis + let obfuscation_result = self.obfuscation_detector.detect_obfuscation( + process, memory_regions + ); + if !obfuscation_result.techniques.is_empty() { + evasion_techniques.extend(obfuscation_result.techniques); + confidence += obfuscation_result.confidence * 0.15; + sophistication_score += obfuscation_result.sophistication * 0.2; + } + + // Compile anti-analysis indicators + anti_analysis_indicators.extend(timing_result.indicators); + anti_analysis_indicators.extend(env_result.indicators); + anti_analysis_indicators.extend(behavior_result.indicators); + anti_analysis_indicators.extend(obfuscation_result.indicators); + + // Normalize scores + confidence = confidence.min(1.0); + sophistication_score = sophistication_score.min(1.0); + + EvasionResult { + evasion_techniques, + confidence, + sophistication_score, + anti_analysis_indicators, + } + } +} + +impl TimingAnalyzer { + pub fn new() -> Self { + Self { + execution_timings: HashMap::new(), + sleep_patterns: HashMap::new(), + } + } + + pub fn analyze_timing_evasion( + &mut self, + process: &ProcessInfo, + threads: &[ThreadInfo], + ) -> TimingEvasionResult { + let mut techniques = Vec::new(); + let mut confidence = 0.0f32; + let mut sophistication = 0.0f32; + let mut indicators = Vec::new(); + + // Detect sleep-based evasion + if let Some(sleep_evasion) = self.detect_sleep_evasion(process) { + techniques.push(sleep_evasion); + confidence += 0.4; + sophistication += 0.3; + indicators.push("Suspicious sleep patterns detected".to_string()); + } + + // Detect execution timing anomalies + if let Some(timing_evasion) = self.detect_timing_anomalies(process, threads) { + techniques.push(timing_evasion); + confidence += 0.3; + sophistication += 0.4; + indicators.push("Execution timing anomalies detected".to_string()); + } + + TimingEvasionResult { + techniques, + confidence, + sophistication, + indicators, + } + } + + fn detect_sleep_evasion(&self, process: &ProcessInfo) -> Option { + // Detect various sleep-based evasion techniques + // This would analyze actual sleep patterns in a real implementation + Some(EvasionTechnique { + technique_name: "Sleep-based Evasion".to_string(), + mitre_id: "T1497.003".to_string(), + description: "Process uses sleep calls to evade dynamic analysis".to_string(), + confidence: 0.7, + indicators: vec![ + "Extended sleep periods before malicious activity".to_string(), + "Random delay patterns".to_string(), + ], + severity: EvasionSeverity::Medium, + }) + } + + fn detect_timing_anomalies( + &self, + process: &ProcessInfo, + threads: &[ThreadInfo], + ) -> Option { + // Detect timing-based anti-analysis techniques + Some(EvasionTechnique { + technique_name: "Timing Check Evasion".to_string(), + mitre_id: "T1497.003".to_string(), + description: "Process uses timing checks to detect analysis environment".to_string(), + confidence: 0.6, + indicators: vec![ + "RDTSC instruction usage".to_string(), + "QueryPerformanceCounter calls".to_string(), + ], + severity: EvasionSeverity::High, + }) + } +} + +#[derive(Debug, Clone)] +struct TimingEvasionResult { + techniques: Vec, + confidence: f32, + sophistication: f32, + indicators: Vec, +} + +impl EnvironmentChecker { + pub fn new() -> Self { + Self { + vm_indicators: Vec::new(), + debugger_checks: Vec::new(), + sandbox_signatures: Vec::new(), + } + } + + pub fn check_environment_evasion(&self, process: &ProcessInfo) -> EnvironmentEvasionResult { + let mut techniques = Vec::new(); + let mut confidence = 0.0f32; + let mut sophistication = 0.0f32; + let mut indicators = Vec::new(); + + // Check for VM detection + if let Some(vm_evasion) = self.detect_vm_evasion(process) { + techniques.push(vm_evasion); + confidence += 0.5; + sophistication += 0.4; + indicators.push("Virtual machine detection attempted".to_string()); + } + + // Check for debugger detection + if let Some(debugger_evasion) = self.detect_debugger_evasion(process) { + techniques.push(debugger_evasion); + confidence += 0.4; + sophistication += 0.5; + indicators.push("Debugger detection mechanisms present".to_string()); + } + + // Check for sandbox detection + if let Some(sandbox_evasion) = self.detect_sandbox_evasion(process) { + techniques.push(sandbox_evasion); + confidence += 0.3; + sophistication += 0.3; + indicators.push("Sandbox evasion techniques detected".to_string()); + } + + EnvironmentEvasionResult { + techniques, + confidence, + sophistication, + indicators, + } + } + + fn detect_vm_evasion(&self, process: &ProcessInfo) -> Option { + Some(EvasionTechnique { + technique_name: "Virtual Machine Detection".to_string(), + mitre_id: "T1497.001".to_string(), + description: "Process attempts to detect virtual machine environment".to_string(), + confidence: 0.8, + indicators: vec![ + "VM artifact enumeration".to_string(), + "Hardware fingerprinting".to_string(), + ], + severity: EvasionSeverity::High, + }) + } + + fn detect_debugger_evasion(&self, process: &ProcessInfo) -> Option { + Some(EvasionTechnique { + technique_name: "Debugger Detection".to_string(), + mitre_id: "T1497.001".to_string(), + description: "Process implements anti-debugging techniques".to_string(), + confidence: 0.9, + indicators: vec![ + "IsDebuggerPresent API calls".to_string(), + "PEB flag checks".to_string(), + "Exception handler manipulation".to_string(), + ], + severity: EvasionSeverity::High, + }) + } + + fn detect_sandbox_evasion(&self, process: &ProcessInfo) -> Option { + Some(EvasionTechnique { + technique_name: "Sandbox Detection".to_string(), + mitre_id: "T1497.001".to_string(), + description: "Process attempts to detect sandbox environment".to_string(), + confidence: 0.7, + indicators: vec![ + "Mouse movement monitoring".to_string(), + "User interaction detection".to_string(), + "System resource enumeration".to_string(), + ], + severity: EvasionSeverity::Medium, + }) + } +} + +#[derive(Debug, Clone)] +struct EnvironmentEvasionResult { + techniques: Vec, + confidence: f32, + sophistication: f32, + indicators: Vec, +} + +impl BehaviorAnalyzer { + pub fn new() -> Self { + Self { + api_hooking_detector: ApiHookingDetector::new(), + execution_flow_analyzer: ExecutionFlowAnalyzer::new(), + resource_usage_monitor: ResourceUsageMonitor::new(), + } + } + + pub fn analyze_behavior_evasion( + &mut self, + process: &ProcessInfo, + memory_regions: &[MemoryRegion], + threads: &[ThreadInfo], + ) -> BehaviorEvasionResult { + let mut techniques = Vec::new(); + let mut confidence = 0.0f32; + let mut sophistication = 0.0f32; + let mut indicators = Vec::new(); + + // API hooking analysis + if let Some(api_evasion) = self.api_hooking_detector.detect_api_evasion(process) { + techniques.push(api_evasion); + confidence += 0.6; + sophistication += 0.7; + indicators.push("API hooking/unhooking detected".to_string()); + } + + // Execution flow analysis + if let Some(flow_evasion) = self.execution_flow_analyzer.analyze_execution_flow( + process, memory_regions + ) { + techniques.push(flow_evasion); + confidence += 0.5; + sophistication += 0.8; + indicators.push("Suspicious execution flow patterns".to_string()); + } + + BehaviorEvasionResult { + techniques, + confidence, + sophistication, + indicators, + } + } +} + +#[derive(Debug, Clone)] +struct BehaviorEvasionResult { + techniques: Vec, + confidence: f32, + sophistication: f32, + indicators: Vec, +} + +impl ApiHookingDetector { + pub fn new() -> Self { + Self { + hooked_functions: HashMap::new(), + inline_hooks: Vec::new(), + iat_modifications: Vec::new(), + } + } + + pub fn detect_api_evasion(&self, process: &ProcessInfo) -> Option { + Some(EvasionTechnique { + technique_name: "API Hooking Evasion".to_string(), + mitre_id: "T1562.002".to_string(), + description: "Process modifies API hooks to evade detection".to_string(), + confidence: 0.8, + indicators: vec![ + "Runtime API patching detected".to_string(), + "Import table modifications".to_string(), + "Direct syscall usage".to_string(), + ], + severity: EvasionSeverity::High, + }) + } +} + +impl ExecutionFlowAnalyzer { + pub fn new() -> Self { + Self { + control_flow_integrity: ControlFlowIntegrity { + indirect_calls: Vec::new(), + rop_gadgets: Vec::new(), + jop_gadgets: Vec::new(), + }, + return_address_verification: ReturnAddressVerification { + shadow_stack: Vec::new(), + call_stack: Vec::new(), + anomalies: Vec::new(), + }, + stack_analysis: StackAnalysis { + stack_regions: Vec::new(), + guard_pages: Vec::new(), + canary_values: Vec::new(), + }, + } + } + + pub fn analyze_execution_flow( + &self, + process: &ProcessInfo, + memory_regions: &[MemoryRegion], + ) -> Option { + Some(EvasionTechnique { + technique_name: "Control Flow Hijacking".to_string(), + mitre_id: "T1055".to_string(), + description: "Process uses advanced control flow techniques".to_string(), + confidence: 0.9, + indicators: vec![ + "ROP/JOP gadget chains detected".to_string(), + "Return address manipulation".to_string(), + "Control flow integrity bypassed".to_string(), + ], + severity: EvasionSeverity::Critical, + }) + } +} + +impl ResourceUsageMonitor { + pub fn new() -> Self { + Self { + cpu_usage: CpuUsagePattern { + baseline_usage: 0.0, + current_usage: 0.0, + usage_spikes: Vec::new(), + idle_periods: Vec::new(), + }, + memory_usage: MemoryUsagePattern { + allocation_patterns: Vec::new(), + deallocation_patterns: Vec::new(), + fragmentation_level: 0.0, + heap_spray_indicators: Vec::new(), + }, + network_usage: NetworkUsagePattern { + connection_patterns: Vec::new(), + data_exfiltration: Vec::new(), + command_control: Vec::new(), + }, + file_system_usage: FileSystemUsagePattern { + file_operations: Vec::new(), + persistence_mechanisms: Vec::new(), + artifact_cleanup: ArtifactCleanup { + cleanup_thoroughness: CleanupThoroughness::None, + timing: CleanupTiming::Never, + methods_used: Vec::new(), + }, + }, + } + } +} + +impl ObfuscationDetector { + pub fn new() -> Self { + Self { + packer_signatures: Vec::new(), + obfuscation_patterns: Vec::new(), + encryption_indicators: Vec::new(), + } + } + + pub fn detect_obfuscation( + &self, + process: &ProcessInfo, + memory_regions: &[MemoryRegion], + ) -> ObfuscationEvasionResult { + let mut techniques = Vec::new(); + let mut confidence = 0.0f32; + let mut sophistication = 0.0f32; + let mut indicators = Vec::new(); + + // Detect packing + if let Some(packer_evasion) = self.detect_packer_evasion(process, memory_regions) { + techniques.push(packer_evasion); + confidence += 0.5; + sophistication += 0.4; + indicators.push("Packed/obfuscated code detected".to_string()); + } + + // Detect code obfuscation + if let Some(code_evasion) = self.detect_code_obfuscation(process, memory_regions) { + techniques.push(code_evasion); + confidence += 0.4; + sophistication += 0.6; + indicators.push("Code obfuscation techniques present".to_string()); + } + + ObfuscationEvasionResult { + techniques, + confidence, + sophistication, + indicators, + } + } + + fn detect_packer_evasion( + &self, + process: &ProcessInfo, + memory_regions: &[MemoryRegion], + ) -> Option { + Some(EvasionTechnique { + technique_name: "Runtime Packing".to_string(), + mitre_id: "T1027.002".to_string(), + description: "Process uses runtime packing to evade static analysis".to_string(), + confidence: 0.7, + indicators: vec![ + "High entropy sections detected".to_string(), + "Runtime unpacking behavior".to_string(), + "Modified PE headers".to_string(), + ], + severity: EvasionSeverity::Medium, + }) + } + + fn detect_code_obfuscation( + &self, + process: &ProcessInfo, + memory_regions: &[MemoryRegion], + ) -> Option { + Some(EvasionTechnique { + technique_name: "Code Obfuscation".to_string(), + mitre_id: "T1027".to_string(), + description: "Process implements sophisticated code obfuscation".to_string(), + confidence: 0.8, + indicators: vec![ + "Control flow obfuscation".to_string(), + "String encryption".to_string(), + "Polymorphic code".to_string(), + ], + severity: EvasionSeverity::High, + }) + } +} + +#[derive(Debug, Clone)] +struct ObfuscationEvasionResult { + techniques: Vec, + confidence: f32, + sophistication: f32, + indicators: Vec, +} \ No newline at end of file