Is mulder-mcp@1.0.0 safe to install?

mulder-mcp@1.0.0

CAUTION· static only

Publisher claims: "Custom MCP server for SANS SIFT Workstation forensic investigations" Observed in sandbox: static analysis only — behavior not yet observed.

Registry PyPI (MCP server)Publisher caleb-evans · publishing for 208 daysInstalls 17Last detonated 42 h ago

What would fix this Watch Dispute verdict

Coverage

Static only; nothing was run yet.

The label rests on the code, the instruction files and the publisher. The honeypot run replaces this verdict when it completes.

Before you give it your token

It will ask for: no credential variables read in the code
Where it talks to: no vendor host named in the codeAlso githubusercontent.com, mitre.org, astral.sh, dot.net, ericzimmermanstools.com, volatilityfoundation.org, microsoft.com — not the publisher's domain; check what for before connecting.
What the honeypot saw: nothing has run yet
What we could not test: everything: the server has not run yet

Run it before you trust it. Nothing has run yet: the code was read, the server was not. `vet-skills try` runs this exact version in the honeypot in about a minute.

Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.

Is [email protected] safe to install?

KillerSkills analysed it statically (a sandbox run is pending) on 2026-11-12 and scored it 47/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: Auto-update or dynamic fetch configuration; Auto-update or dynamic fetch configuration; Privileged sudo command. Summary: static analysis only — behavior not yet observed.

Behavior trace

Queued for honeypot run · static analysis only

t+CategoryObserved action

This version has not been detonated yet. The score above counts behavior as unknown (50/100), so it cannot read Verified until the honeypot run completes and replaces this verdict.

Static findings

MEDIUM

File permission modification commandinstall.sh:400 · File permission modification command — agent changes file ownership/permissionschmod +x "${HAYABUSA_DIR}/${HAYABUSA_BIN}"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.

AST05

MEDIUM

File permission modification commandDockerfile:74 · File permission modification command — agent changes file ownership/permissions&& chmod +x /tmp/dotnet-install.sh \Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.

AST05

HIGH

Auto-update or dynamic fetch configurationsrc/mulder/server/tools_yara.py:413 · Auto-update or dynamic fetch configuration — agent may load new code at runtimeCommunity rule repos are auto-updated on first use if network isFix: Pin versions and sources; vendor anything fetched at install time.

AST06

HIGH

Auto-update or dynamic fetch configurationsrc/mulder/server/tools_yara.py:265 · Auto-update or dynamic fetch configuration — agent may load new code at runtimeCommunity rule repos are auto-updated on first use if network isFix: Pin versions and sources; vendor anything fetched at install time.

AST06

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/bulk.py:89 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

File permission modification commandinstall.sh:546 · File permission modification command — agent changes file ownership/permissionschown "$REAL_USER":"$(id -gn "$REAL_USER")" "$MCP_JSON" "$CLAUDE_DIR"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.

AST05

MEDIUM

File permission modification commandinstall.sh:581 · File permission modification command — agent changes file ownership/permissionschmod 644 "$PROFILE_SCRIPT"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.

AST05

MEDIUM

File permission modification commandinstall.sh:558 · File permission modification command — agent changes file ownership/permissionschown "$REAL_USER":"$(id -gn "$REAL_USER")" "$MCP_JSON"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.

AST05

MEDIUM

Remote installer piped to shellinstall.sh:5 · Remote installer piped to shell# curl -fsSL https://raw.githubusercontent.com/calebevans/mulder/main/install.sh | sudo bashFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST07

MEDIUM

Destructive file system command detectedDockerfile:93 · Destructive file system command detected&& rm -rf /var/lib/apt/lists/*Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.

AST05

HIGH

Privileged sudo commandinstall.sh:5 · Privileged sudo command — agent may execute with elevated privileges# curl -fsSL https://raw.githubusercontent.com/calebevans/mulder/main/install.sh | sudo bashFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.

AST05

MEDIUM

Destructive file system command detectedDockerfile:46 · Destructive file system command detected&& rm -rf /var/lib/apt/lists/*Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.

AST05

MEDIUM

Pipe-to-shell patternDockerfile:253 · Pipe-to-shell pattern — downloads and immediately executes remote codeRUN curl -fsSL https://deb.nodesource.com/setup_22.x | bash - \Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST06

HIGH

Direct script execution from GitHub raw URLinstall.sh:5 · Direct script execution from GitHub raw URL — unverified code source# curl -fsSL https://raw.githubusercontent.com/calebevans/mulder/main/install.sh | sudo bashFix: Pin versions and sources; vendor anything fetched at install time.

AST06

MEDIUM

File permission modification commandinstall.sh:344 · File permission modification command — agent changes file ownership/permissionschmod +x "${BUILD_DIR}/dotnet-install.sh"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.

AST05

MEDIUM

Destructive file system command detectedDockerfile:15 · Destructive file system command detected&& rm -rf /var/lib/apt/lists/*Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.

AST05

HIGH

Access to sensitive file pathssrc/mulder/report/data/attack_tactics.json:1 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files

…ame":"Transmitted Data Manipulation","tactics":["TA0040"]},"T1003.008":{"name":"/etc/passwd and /etc/shadow","tactics":["TA0006"]},"T1543.001":{"name":"Launch Agent","tact…

Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.

AST05

MEDIUM

Destructive file system command detectedDockerfile:77 · Destructive file system command detected&& rm /tmp/dotnet-install.shFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.

AST05

MEDIUM

Destructive file system command detectedDockerfile:71 · Destructive file system command detected&& rm -rf /var/lib/apt/lists/*Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.

AST05

MEDIUM

Remote installer piped to shellDockerfile:253 · Remote installer piped to shellRUN curl -fsSL https://deb.nodesource.com/setup_22.x | bash - \Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST07

MEDIUM

File permission modification commandDockerfile:135 · File permission modification command — agent changes file ownership/permissions&& chmod +x /opt/hayabusa/hayabusa-${HAYABUSA_VERSION}-lin-${HAYABUSA_VARIANT} \Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/extract_helpers.py:190 · Python subprocess execution detectedsubprocess.run(cmd, capture_output=True, timeout=30, check=True)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/plaso.py:325 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/disk.py:292 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/disk.py:261 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/extract_helpers.py:207 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/volatility.py:214 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/volatility.py:194 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/plaso.py:255 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/eztools.py:244 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/eztools.py:123 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/sleuthkit.py:206 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/sleuthkit.py:243 · Python subprocess execution detectedmac_proc = subprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/sleuthkit.py:237 · Python subprocess execution detectedfls_proc = subprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/eztools.py:155 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/eztools.py:71 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/volatility.py:145 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/disk.py:166 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/bulk.py:110 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/plaso.py:291 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/eztools.py:363 · Python subprocess execution detectedproc = subprocess.run(cmd, capture_output=True, text=True, timeout=300, check=False)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/plaso.py:232 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/sleuthkit.py:155 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/disk.py:248 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/disk.py:131 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/sleuthkit.py:174 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/plaso.py:182 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/extractors/volatility.py:41 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_hayabusa.py:149 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_extract.py:48 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_artifacts.py:541 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_extract.py:125 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_yara.py:58 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_artifacts.py:647 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/extract_helpers.py:229 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_extract.py:485 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_tsk.py:96 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_plaso.py:82 · Python subprocess execution detectedreturn subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_tsk.py:313 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_yara.py:316 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/extract_helpers.py:250 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_yara.py:127 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_artifacts.py:766 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_hindsight.py:110 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_extract.py:533 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_mvt.py:219 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_yara.py:485 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_mvt.py:107 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_artifacts.py:631 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/extract_helpers.py:263 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_case.py:347 · Python subprocess execution detectedsubprocess.run(cmd, capture_output=True, timeout=_EXTRACT_TIMEOUT, check=True)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_tsk.py:440 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_phone.py:706 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_artifacts.py:36 · Python subprocess execution detectedproc = subprocess.run(cmd, capture_output=True, timeout=30, check=False)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_hindsight.py:35 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_extract.py:145 · Python subprocess execution detectedfb_proc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

AWS access key pattern detectedtests/test_redactor.py:27 · AWS access key pattern detected — possible hardcoded or harvested keytext = 'password = "AKIAIOSFODNN7EXAMPLE"'Fix: Never read or enumerate credential locations; accept a documented environment variable instead.

AST03

MEDIUM

AWS access key pattern detectedtests/test_redactor.py:45 · AWS access key pattern detected — possible hardcoded or harvested keytext = 'secret_key = "AKIAIOSFODNN7EXAMPLE"'Fix: Never read or enumerate credential locations; accept a documented environment variable instead.

AST03

MEDIUM

Python subprocess execution detectedsrc/mulder/server/tools_yara.py:656 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

Cost to the agent

Instructions loaded

≈52 tok

1 file · 78 in bundle

Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.

Known vulnerabilities

No advisories in OSV for mulder-mcp@1.0.0 as of 41 h ago. This is the package itself, not its dependencies.

What would make this Verified

33 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%

Unclaimed publisher≈ +8 on the totalClaim caleb-evans: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
Auto-update or dynamic fetch configuration≈ +4 on the totalPin versions and sources; vendor anything fetched at install time.
Privileged sudo command≈ +4 on the totalBuild commands from fixed arguments; do not interpolate untrusted strings into a shell.
Direct script execution from GitHub raw URL≈ +4 on the totalPin versions and sources; vendor anything fetched at install time.
Access to sensitive file paths≈ +4 on the totalStop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
File permission modification command≈ +2 on the totalRequest the narrowest permission that works; replace wildcards with the exact paths or hosts.

Publish a new version to PyPI, then queue it here. Not your skill? Claim the handle to get verdict changes by email.Claim caleb-evans Propose a patch to the maintainer