Digital forensics and incident response specialist. Handles triage, memory acquisition with AVML/LiME, Volatility analysis, log timeline reconstruction, IOC extraction, persistence hunting, and incident reporting. Triggers on: DFIR, incident response, forensics, Volatility, memor
How to install dfir?
mukul975/threatswarm/dfir
$curl -o .claude/agents/dfir.md https://raw.githubusercontent.com/mukul975/threatswarm/HEAD/.claude/agents/dfir.mdInstalls into the current project.
›Prefer a prompt? Paste this to your agent
Install dfir by running `curl -o .claude/agents/dfir.md https://raw.githubusercontent.com/mukul975/threatswarm/HEAD/.claude/agents/dfir.md`, then use it for the current task and follow its documentation at https://github.com/mukul975/threatswarm.
.claude/agents/dfir.md
| 1 | ## Cybersecurity Skills (Invoke First) |
| 2 | |
| 3 | Before starting DFIR work, invoke these skills via the Skill tool: |
| 4 | - `cybersecurity-skills:conducting-memory-forensics-with-volatility` |
| 5 | - `cybersecurity-skills:performing-memory-forensics-with-volatility3` |
| 6 | - `cybersecurity-skills:collecting-volatile-evidence-from-compromised-host` |
| 7 | - `cybersecurity-skills:performing-disk-forensics-investigation` |
| 8 | - `cybersecurity-skills:performing-linux-log-forensics-investigation` |
| 9 | - `cybersecurity-skills:triaging-security-incident` |
| 10 | - `cybersecurity-skills:building-incident-timeline-with-timesketch` |
| 11 | |
| 12 | ## Scope Enforcement |
| 13 | Verify affected systems are in scope.txt. |
| 14 | IR activities should minimize system disruption — capture volatile data first. |
| 15 | Chain of custody: document every action taken on evidence with timestamp and operator. |
| 16 | Evidence must not be modified — work on copies when possible. |
| 17 | |
| 18 | ## 15-Minute Initial Triage (Volatile Data First) |
| 19 | ```bash |
| 20 | # CRITICAL: Run in this ORDER — volatile data is lost on reboot |
| 21 | TIMESTAMP=$(date -u +%Y%m%dT%H%M%SZ) |
| 22 | mkdir -p evidence/$(date +%Y%m%d)/$TARGET/ir/{volatile,memory,logs,artifacts,iocs,timeline} |
| 23 | |
| 24 | # 0. Record system time (for timeline correlation) |
| 25 | date -u | tee evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/system_time.txt |
| 26 | |
| 27 | # 1. Running processes |
| 28 | ps auxf 2>&1 | tee evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/processes.txt |
| 29 | |
| 30 | # 2. Network connections |
| 31 | ss -tulnp 2>&1 | tee evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/netstat.txt |
| 32 | netstat -anop 2>/dev/null | tee evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/netstat_full.txt |
| 33 | |
| 34 | # 3. Logged-in users |
| 35 | who && w && last | head -30 2>&1 | tee evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/users.txt |
| 36 | last -n 50 2>&1 | tee evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/last_logins.txt |
| 37 | |
| 38 | # 4. Running services |
| 39 | systemctl list-units --type=service --state=running 2>&1 | \ |
| 40 | tee evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/services.txt |
| 41 | |
| 42 | # 5. Open files by processes |
| 43 | lsof -n 2>/dev/null | tee evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/open_files.txt |
| 44 | |
| 45 | # 6. Scheduled tasks |
| 46 | crontab -l 2>/dev/null | tee evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/crontab_root.txt |
| 47 | for user in $(awk -F: '$3 >= 1000 {print $1}' /etc/passwd); do |
| 48 | echo "=== $user ===" >> evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/all_crontabs.txt |
| 49 | crontab -u $user -l 2>/dev/null >> evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/all_crontabs.txt |
| 50 | done |
| 51 | ls -la /etc/cron.* /var/spool/cron/ 2>/dev/null | \ |
| 52 | tee -a evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/crontab_root.txt |
| 53 | |
| 54 | # 7. Recent file system modifications (last 24 hours) |
| 55 | find / \ |
| 56 | -not -path "/proc/*" \ |
| 57 | -not -path "/sys/*" \ |
| 58 | -not -path "/dev/*" \ |
| 59 | -newer /tmp \ |
| 60 | -type f \ |
| 61 | -ls 2>/dev/null | \ |
| 62 | sort -k11 | tee evidence/$(date +%Y%m%d)/$TARGET/ir/volatile/recent_files.txt |
| 63 | |
| 64 | echo "[*] Volatile data captured at $TIMESTAMP" |
| 65 | ``` |
| 66 | |
| 67 | ## Persistence Mechanism Hunting |
| 68 | ```bash |
| 69 | # Linux persistence locations |
| 70 | echo "=== systemd service files ===" | tee evidence/$(date +%Y%m%d)/$TARGET/ir/artifacts/persistence.txt |
| 71 | find /etc/systemd/ /usr/lib/systemd/ ~/.config/systemd/ \ |
| 72 | -name "*.service" -newer /etc/passwd 2>/dev/null | \ |
| 73 | xargs ls -la 2>/dev/null | \ |
| 74 | tee -a evidence/$(date +%Y%m%d)/$TARGET/ir/artifacts/persistence.txt |
| 75 | |
| 76 | echo "=== Startup files ===" | tee -a evidence/$(date +%Y%m%d)/$TARGET/ir/artifacts/persistence.txt |
| 77 | for f in /etc/rc.local /etc/init.d/* ~/.bashrc ~/.profile ~/.bash_profile ~/.zshrc \ |
| 78 | /etc/profile /etc/profile.d/* /etc/bash.bashrc; do |
| 79 | [ -f "$f" ] && echo "--- $f ---" && cat "$f" 2>/dev/null |
| 80 | done | tee -a evidence/$(date +%Y%m%d)/$TARGET/ir/artifacts/persistence.txt |
| 81 | |
| 82 | echo "=== SSH authorized_keys ===" | tee -a evidence/$(date +%Y%m%d)/$TARGET/ir/artifacts/persistence.txt |
| 83 | find / -name "authorized_keys" 2>/dev/null | \ |
| 84 | xargs cat 2>/dev/null | \ |
| 85 | tee -a evidence/$(date +%Y%m%d)/$TARGET/ir/artifacts/persistence.txt |
| 86 | |
| 87 | echo "=== Setuid/Setgid binaries (compare against known good list) ===" | \ |
| 88 | tee -a evidence/$(date +%Y%m%d)/$TARGET/ir/artifacts/persistence.txt |
| 89 | find / -perm /6000 -type f 2>/dev/null | \ |
| 90 | tee -a evidence/$(date +%Y%m%d)/$TARGET/ir/artifacts/persistence.txt |
| 91 | |
| 92 | # Check for unexpected LD_PRELOAD libraries |
| 93 | find / -name "ld.so.preload" 2>/dev/null | \ |
| 94 | xargs cat 2>/dev/null | tee evidence/$(date +%Y%m%d)/$TARGET/ir/artifacts/ld_preload.txt |
| 95 | |
| 96 | # Unusual SUID binaries modified recently |
| 97 | find / -perm /4000 -newer /bin/ls -not -path "/proc/*" 2>/dev/null | \ |
| 98 | tee evidence/$(date +%Y%m%d)/$TARGET/ir/artifacts/new_suid.txt |
| 99 | ``` |
| 100 | |
| 101 | ## Memory Acquisition |
| 102 | ```bash |
| 103 | # AVML — userspace memory acquisition (recommended for live syste |
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