Malware

nhmpy

Tracked since Jul 7, 2026 · Updated 4 months ago

Trending this weekNot trendingOutside this week’s top 100

Mention activity · 30 daysNo mention activity in the last 30 days.

Vulns0Associated

Actors0Associated

ATT&CK16Techniques

IOCs0Tracked

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MITRE ATT&CK

Techniques & procedures

16 distinct techniques documented for this family, organized by ATT&CK tactic.

Initial Access

1 technique

T1195.001Compromise Software Dependencies and Development ToolsEvidence1

Initial Access Supply Chain Compromise: Software Dependencies & Tools T1195.001 Typosquat nhmpy of numpy

Execution

2 techniques

T1059Command and Scripting InterpreterEvidence1

Execution Command & Scripting Interpreter T1059 Bun runs _index.js ; execSync , curl , unzip

T1204.003Malicious ImageEvidence1

Execution User Execution: Malicious Package T1204.003 Victim installs the package

Persistence

1 technique

T1546Event Triggered ExecutionEvidence1

Persistence Event Triggered Execution ( .pth auto‑run) T1546 nhmpy-setup.pth runs on every Python start

Privilege Escalation

1 technique

T1546Event Triggered ExecutionEvidence1

Persistence Event Triggered Execution ( .pth auto‑run) T1546 nhmpy-setup.pth runs on every Python start

Stealth

2 techniques

T1027Obfuscated Files or InformationEvidence1

Defense Evasion Obfuscated/Encrypted Files & Information T1027 ROT‑17 → AES‑128‑GCM → obfuscator.io → custom G1 cipher (4 layers)

T1036MasqueradingEvidence1

Defense Evasion Masquerading T1036 Verbatim NumPy clone; commits as chore: / fix: ci ; codeql.yml lure

Credential Access

4 techniques

T1528Steal Application Access TokenEvidence1

Credential Access Steal Application Access Token T1528 GitHub/npm/PyPI/RubyGems/Azure/GCP/Anthropic tokens & OIDC exchange

T1552.001Credentials In FilesEvidence1

Credential Access Credentials in Files T1552.001 ~/.aws , ~/.npmrc , ~/.pypirc , Vault token files, wallets

T1552.005Cloud Instance Metadata APIEvidence1

Credential Access Cloud Instance Metadata API T1552.005 AWS IMDS 169.254.169[.]254 , ECS 169.254.170[.]2 , Azure IMDS

T1552.007Container APIEvidence1

Credential Access Container/K8s API token theft T1552.007 …/serviceaccount/token , kube config, Vault K8s

Discovery

2 techniques

T1087Account DiscoveryEvidence1

Discovery Cloud Service / Account Discovery T1526 / T1087 GraphQL identity & repo enumeration

T1526Cloud Service DiscoveryEvidence1

Discovery Cloud Service / Account Discovery T1526 / T1087 GraphQL identity & repo enumeration

Lateral Movement

1 technique

T1570Lateral Tool TransferEvidence1

It self‑propagates by committing a malicious GitHub Actions workflow disguised as .github/workflows/codeql.yml ... into the victim’s repositories, then pushes and polls the workflow run.

Collection

1 technique

T1005Data from Local SystemEvidence1

Collection Data from Local System T1005 Aggregates discovered secrets

Command and Control

1 technique

T1105Ingress Tool TransferEvidence1

It fires on every Python start, fetches the Bun runtime from GitHub, and runs _index.js via a LOLbin.

Exfiltration

1 technique

T1567Exfiltration Over Web ServiceEvidence1

Exfiltration Exfiltration Over Web Service T1567 Secrets written to attacker‑controlled GitHub repo

Activity feed

Recent activity

1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

View more in app →

meltedinhex blogNews · Jun 14, 2026Peeling the Sandworm: Reversing the nhmpy PyPI Supply-Chain Worm (Shai-Hulud / Hades Wave) | Melted in HexA malicious PyPI typosquat package impersonating NumPy that executes via a .pth startup hook, downloads Bun from GitHub, runs an obfuscated JavaScript payload, steals developer/CI/CD/cloud credentials, exfiltrates via GitHub using stolen tokens, and self-propagates by committing malicious GitHub Actions workflows into victim repositories.Read more ↗

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IOC matchingMatch every observed IP, domain, and hash against your live telemetry.

Associated threat actorsGroups linked to this family, with evidence pinned to each claim.

Associated vulnerabilitiesCVEs linked to this family, with the reporting behind each link.

Detection signaturesYARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

MITRE ATT&CK mapping16Every documented technique, ranked by evidence weight.

Researcher chatterReddit, Mastodon, and CTI community discussion around this family.

nhmpy

Tracked since Jul 7, 2026 · Updated 4 months ago

Trending this weekNot trendingOutside this week’s top 100

Mention activity · 30 daysNo mention activity in the last 30 days.

Vulns0Associated

Actors0Associated

ATT&CK16Techniques

IOCs0Tracked

Is this in your environment?See whether this family's indicators match your telemetry and which of your assets are exposed to the CVEs associated with it.

Check your exposure