加密流量元数据与行为分析

EncGuard Pro 加密通信恶意行为检测平台

检测模式：规则检测 + 分类模型 + 异常检测 + 攻击链融合 模型状态：已启用

Alert Detail

告警详情

runtime-76116255-2737-4e60-9e64-228313fd287b

模型预测与异常检测已拆分为 model_prediction 与 anomaly_result 两个解释区。

风险评分 88 high
Basic Info

基础信息

event_id
runtime-76116255-2737-4e60-9e64-228313fd287b
flow_id
safe-lab-20260704092453-e82171-019-ssh_bruteforce_like
src_ip
10.20.7.81
dst_ip
203.0.113.211
protocol
ssh
timestamp
2026-07-04T09:24:55.493068+00:00
风险等级
high
检测类型
ssh_bruteforce
detectors
rule_engine, attack_chain
source
mixed_scenario_lab
chain_related
True
Risk Score

风险评分

final_risk_score
88
severity
high
security_alert
True
Risk Formation

最终风险形成

rule_score
88
supervised_risk_score
6
calibrated_risk_score
7
anomaly_risk_score
17
final_risk_score
88
fusion_policy
max(rule_score, calibrated_risk_score, anomaly_risk_score)
gate_formula
risk=(1-g)*supervised_risk+g*anomaly_risk
Weak Scenario Support

弱覆盖场景补强证据

该事件不属于弱覆盖场景，或无需额外补强说明。

Model Prediction

模型预测 model_prediction

predicted_label
benign
malicious_probability
0.0623
model_score
6
calibrated_risk_score
7
uncertainty_gate
0.055239
probability_entropy
0.285043
top2_margin
0.866176
js_divergence
0.019292
unknown_decision
False
model_supported_label
True
Anomaly Detection

异常检测 anomaly_result

anomaly_score
16.688005
anomaly_risk_score
17
is_anomaly
False
Rule Hits

规则 evidence

ssh_bruteforce scenario_rule_engine · risk_score=88
Evidence

推荐处置 recommendation

  • uploaded_file=mixed_scenario_features.csv
  • input_label=ssh_bruteforce
  • uploaded feature row evaluated by EncGuard scenario rule engine
  • uncertainty_gate=0.055239
  • safe_lab_batch=safe-lab-20260704092453-e82171
  • scenario=ssh_bruteforce_like
  • ground_truth_label=ssh_bruteforce
  • safe synthetic metadata only; no payload and no real attack execution

recommendation：Review uploaded feature context and validate whether this communication is authorized.

Attack Chain

攻击链关联 attack_chain

ssh_bruteforce_to_post_action chain_id=inferred-1 · risk_score=88
Safety Boundary

安全边界说明

  • EncGuard 不解密 SSH/TLS/HTTPS/SFTP/SCP payload。
  • 当前检测依据为连接元数据、流量统计、规则 evidence、模型预测、异常检测和攻击链聚合。
  • post_bruteforce_action、encrypted_tunnel、data_exfiltration 主要由规则、攻击链或异常检测补强。
Raw Feature

原始特征详情

flow_id
safe-lab-20260704092453-e82171-019-ssh_bruteforce_like
src_ip
10.20.7.81
dst_ip
203.0.113.211
src_port
55486
dst_port
22
protocol
ssh
start_time
2026-07-04T09:41:23Z
duration
1.641
total_packets
22
total_bytes
700
fwd_packets
9
bwd_packets
13
fwd_bytes
509
bwd_bytes
191
upload_download_ratio
2.664921
packets_per_second
13.406577
bytes_per_second
426.572915
packet_size_mean
31.818182
packet_size_std
4.663635
iat_mean
0.038616
iat_std
0.008731
same_src_conn_count_1min
17
same_src_conn_count_5min
85
short_connection_count_5min
47
long_session_flag
False
large_upload_flag
False
unknown_destination_flag
False
non_working_hour_flag
True
packet_direction_sequence_summary
short_client_initiated_bursts
packet_size_sequence_summary
small_repeated_handshake_like
burst_count
17
interactive_gap_mean
0.038616
interactive_gap_std
0.008731
post_login_long_session_flag
False
command_like_burst_flag
True
failed_login_then_long_session_flag
False
scenario
ssh_bruteforce_like
label
ssh_bruteforce
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