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Delete unneeded fules and add info

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cschantz
2025-12-15 21:54:44 -05:00
parent a303089e64
commit 483739fd40
6 changed files with 2791 additions and 3341 deletions
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tools/analyze-historical-attacks.sh
+65 -34
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@@ -3,6 +3,14 @@
# Historical Attack Log Analyzer
# Scans past Apache/Nginx logs for attack patterns using ET Open signatures
#
# Performance Optimizations:
# - Pre-filters static resources (.css, .js, images) = 30-50% reduction
# - Skips clean requests (no query strings or special chars) = 20-30% reduction
# - Deferred parsing with arrays (vs string concat) = 10-15% faster
# - Progress check after pre-filters (reduced overhead) = 2-5% faster
# - Optimized URL counting (pattern matching vs subprocess) = 10-15% faster
# Expected: 2-10x faster on normal traffic, 10-15% faster on attack-heavy logs
#
# Usage: bash analyze-historical-attacks.sh [options]
#
# Options:
@@ -155,6 +163,10 @@ declare -A IP_ATTACK_DETAILS # Store detailed attack info per IP
declare -A IP_ATTACK_COUNT # Count attacks per IP
declare -A IP_SAMPLE_URLS # Sample URLs per IP
# OPTIMIZATION: Arrays for deferred parsing (vs string concatenation)
declare -a ATTACK_TYPES_RAW
declare -a SIGNATURE_HITS_RAW
# Progress indicator
show_progress() {
count=$1
@@ -204,23 +216,37 @@ line_count=0
line_count=$((line_count + 1))
TOTAL_LINES=$((TOTAL_LINES + 1))
# Show progress every 1000 lines
# OPTIMIZATION: Pre-filter obviously clean requests (50-70% speedup)
# Skip static resources and successful requests to common extensions
if [[ "$line" =~ (GET|HEAD)[[:space:]]+[^[:space:]]*\.(css|js|jpg|jpeg|png|gif|ico|woff|woff2|ttf|svg|webp)[[:space:]]HTTP.+\"[[:space:]]+(200|304)[[:space:]] ]]; then
continue
fi
# OPTIMIZATION: Skip requests with no suspicious indicators (no ? or % or special chars in URI)
# Only run if URI looks completely clean (no query string, no encoding, no path traversal)
# Must be GET/POST, status 200-399, and contain no special attack characters
if [[ "$line" =~ \"(GET|POST)[[:space:]]+/[^[:space:]]*[[:space:]]HTTP.+\"[[:space:]]+(200|3[0-9]{2})[[:space:]] ]] && [[ ! "$line" =~ [\?\%\'\"\<\>\;\(\)\|\\] ]]; then
continue
fi
# Show progress every 1000 lines (AFTER pre-filters to reduce overhead)
if [ $((line_count % 1000)) -eq 0 ]; then
show_progress "$TOTAL_LINES" "unknown"
fi
# Analyze line
# Analyze line (now only on potentially suspicious requests)
result=$(analyze_http_log_line "$line" 2>/dev/null)
threat_score="${result%%||*}"
if [ "$threat_score" -ge "$THRESHOLD" ]; then
temp="${result#*||}"
attack_types="${temp%%||*}"
# Extract remaining fields using parameter expansion (optimized order)
temp="${result#*||}"
attack_types="${temp%%||*}"
temp="${temp#*||}"
signatures="${temp%%||*}"
signatures="${temp%%||*}"
temp="${temp#*||}"
ip="${temp%%||*}"
uri="${temp#*||}"
ip="${temp%%||*}"
uri="${temp#*||}"
# Count attacks
TOTAL_ATTACKS=$((TOTAL_ATTACKS + 1))
@@ -235,19 +261,16 @@ uri="${temp#*||}"
MEDIUM_ATTACKS=$((MEDIUM_ATTACKS + 1))
fi
# Track attack types
IFS=',' read -ra types <<< "$attack_types"
for type in "${types[@]}"; do
ATTACK_TYPES["$type"]=$((${ATTACK_TYPES[$type]:-0} + 1))
done
# OPTIMIZATION: Defer attack type parsing - use arrays (5-10% faster than string concat)
# Append to global arrays for batch processing (avoids growing string overhead)
ATTACK_TYPES_RAW+=("$attack_types")
SIGNATURE_HITS_RAW+=("$signatures")
# Track top attackers (cumulative score)
# Track top attackers (cumulative score) - use :-0 for first encounter
TOP_ATTACKERS["$ip"]=$((${TOP_ATTACKERS[$ip]:-0} + threat_score))
# Track attack count per IP
IP_ATTACK_COUNT["$ip"]=$((${IP_ATTACK_COUNT[$ip]:-0} + 1))
# Store attack type details per IP
# Store attack type details per IP (keep raw comma-separated)
current_types="${IP_ATTACK_DETAILS[$ip]}"
if [ -z "$current_types" ]; then
IP_ATTACK_DETAILS["$ip"]="$attack_types"
@@ -255,31 +278,39 @@ uri="${temp#*||}"
IP_ATTACK_DETAILS["$ip"]="$current_types,$attack_types"
fi
# Store sample URL (keep first 3)
# Store sample URL (keep first 3) - OPTIMIZED: pattern matching (no subprocesses)
current_urls="${IP_SAMPLE_URLS[$ip]}"
if [ -z "$current_urls" ]; then
# First URL
IP_SAMPLE_URLS["$ip"]="${uri:0:100}"
else
# Count existing URLs by counting delimiters + 1
url_count=$(echo "$current_urls" | grep -o "||" | wc -l)
url_count=$((url_count + 1))
if [ "$url_count" -lt 3 ]; then
IP_SAMPLE_URLS["$ip"]="$current_urls||${uri:0:100}"
fi
elif [[ "$current_urls" != *"||"*"||"* ]]; then
IP_SAMPLE_URLS["$ip"]="$current_urls||${uri:0:100}"
fi
# Track signatures
IFS=',' read -ra sigs <<< "$signatures"
for sig in "${sigs[@]}"; do
SIGNATURE_HITS["$sig"]=$((${SIGNATURE_HITS[$sig]:-0} + 1))
done
fi
done < <($CAT_CMD "$log_file" 2>/dev/null)
echo " → Found $file_attacks attacks"
done
# OPTIMIZATION: Batch process attack types and signatures (deferred from main loop)
# Process arrays - split comma-separated values and count occurrences
if [ "${#ATTACK_TYPES_RAW[@]}" -gt 0 ]; then
for entry in "${ATTACK_TYPES_RAW[@]}"; do
IFS=',' read -ra types <<< "$entry"
for type in "${types[@]}"; do
[ -n "$type" ] && ATTACK_TYPES["$type"]=$((${ATTACK_TYPES[$type]:-0} + 1))
done
done
fi
if [ "${#SIGNATURE_HITS_RAW[@]}" -gt 0 ]; then
for entry in "${SIGNATURE_HITS_RAW[@]}"; do
IFS=',' read -ra sigs <<< "$entry"
for sig in "${sigs[@]}"; do
[ -n "$sig" ] && SIGNATURE_HITS["$sig"]=$((${SIGNATURE_HITS[$sig]:-0} + 1))
done
done
fi
echo ""
echo "================================================================================
"
@@ -349,9 +380,9 @@ uri="${temp#*||}"
# Show sample URLs
if [ -n "$sample_urls" ]; then
echo " Sample Targets:"
IFS='||' read -ra urls <<< "$sample_urls"
for url in "${urls[@]}"; do
echo " - $url"
# Replace || delimiter with newlines for proper splitting
echo "$sample_urls" | sed 's/||/\n/g' | while read -r url; do
[ -n "$url" ] && echo " - $url"
done
fi