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Rule Reference

SEC736lintai-ai-securitystablehookdeny

Hook script: environment dump exfiltration

Hook script dumps and exfiltrates environment variables or shell state

Provider
lintai-ai-security
Surface
hook
Scope
per_file
Tier
stable
Severity
deny
Confidence
high
Detection
structural
Remediation
message_only

Activation Model

Preset Membership

This rule is part of the builtin activation graph through these preset memberships.

basemembership

Lifecycle

Stable Lifecycle Contract

State

stable_gated

Graduation rationale

Checks hook shell lines for explicit environment or shell-state enumeration commands combined with remote transfer behavior.

Deterministic signal basis

HookSignals command-line analysis over non-comment hook lines for explicit environment enumeration primitives such as `printenv`, `env` used as a dump, `export -p`, `declare -xp`, or `compgen -v`, combined with remote sinks such as `curl`, `wget`, `scp`, `sftp`, `rsync`, `nc`, `aws s3 cp`, `gsutil cp`, `rclone copy`, or HTTP(S) endpoints.

Malicious corpus
hook-env-dump-exfilhook-env-dump-cloud-exfil
Benign corpus
cursor-plugin-clean-basic
structured evidence required remediation reviewed
Canonical note

Structural stable rule intended as a high-precision check with deterministic evidence.

Nearby Signals

Related Rules

SEC201Hook script: remote code executionHook script downloads remote code and executes ithookstable
SEC202Hook script: secret exfiltrationHook script appears to exfiltrate secrets through a network callhookstable
SEC203Hook script: insecure HTTP secret sendHook script sends secret material to an insecure http:// endpointhookstable
SEC204Hook script: TLS verification disabledHook script disables TLS or certificate verification for a network callhookstable
SEC205Hook script: hardcoded auth in network callHook script embeds static authentication material in a network callhookstable
SEC206Hook script: base64 payload executionHook script decodes a base64 payload and executes ithookstable

Why It Matters ​

Dumping environment variables and sending them to a remote destination is high-confidence credential theft behavior.

What Triggers ​

SEC736 matches executable hook lines that invoke explicit environment enumeration primitives such as printenv, env used as a dump, export -p, declare -xp, or compgen -v, and also transmit data to remote sinks such as curl, wget, scp, rsync, nc, or HTTP(S) endpoints.

False Positives ​

Shared committed hooks should not dump and transmit environment state. Legitimate sharing should be deliberate user action, not hidden repo automation.

Remediation ​

Remove environment dumping and remote transfer behavior from the shared hook and keep shell state local unless the user explicitly chooses to share it.