[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill:01M71B4EF8KT52GV05PW0CB035":3,"skill-same:01M71B4EF8KT52GV05PW0CB035":68},{"skillNo":4,"name":5,"nameZh":6,"description":7,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":16,"categories":17,"keywords":18,"publishedAt":39,"linkOnly":40,"markdownContent":41,"markdownBody":42,"frontMatter":43,"refName":47,"commitSha":48,"skillDirectory":49,"forksCount":50,"repositoryHtmlUrl":51,"repositoryHomepageUrl":6,"ownerHtmlUrl":52,"ownerBlogUrl":6,"ownerDescription":53,"updatedAt":54,"install":55,"resources":67},"01M71B4EF8KT52GV05PW0CB035","cyber-hunting-for-anomalous-powershell-execution",null,"Hunt for malicious PowerShell activity by analyzing Script Block Logging (Event 4104), Module Logging (Event 4103), and process creation events. The analyst parses Windows Event Log EVTX files to detect obfuscated commands, AMSI bypass attempts, encoded payloads, credential dumping keywords, and suspicious download cradles. Activates for requests involving PowerShell threat hunting, script block a","nexuslinkproductions\u002Fyuri-os","nexuslinkproductions","https:\u002F\u002Favatars.githubusercontent.com\u002Fu\u002F273246263?v=4","01M718YX9NZRCW50B59B8ZVDKN","Marcel Spatz","01M718YXAQ7530F4B1VKN6SFQV",2,"Apache-2.0","https:\u002F\u002Fgithub.com\u002Fnexuslinkproductions\u002Fyuri-os\u002Fblob\u002Fmain\u002F.claude\u002Fskills\u002Fcyber-hunting-for-anomalous-powershell-execution\u002FSKILL.md",[],[19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38],"for","execution","hunting for anomalous powershell execution","hunting","cyber hunting for anomalous powershell execution","powershell","log","analysis","false","cybersecurity","hunt","amsi","files","module","true","event","payloads","creation","event log","windows","2026-11-10 10:12:30",false,"---\nname: cyber-hunting-for-anomalous-powershell-execution\ndescription: \"Hunt for malicious PowerShell activity by analyzing Script Block Logging (Event 4104), Module Logging (Event 4103), and process creation events. The analyst parses Windows Event Log EVTX files to detect obfuscated commands, AMSI bypass attempts, encoded payloads, credential dumping keywords, and suspicious download cradles. Activates for requests involving PowerShell threat hunting, script block a\"\nsource: mukul975\u002FAnthropic-Cybersecurity-Skills\nlicense: Apache-2.0\nauthorized_lab: false\norigin_frontmatter: \"name: hunting-for-anomalous-powershell-execution | description: 'Hunt for malicious PowerShell activity by analyzing Script Block Logging |   (Event 4104), Module Logging (Event 4103), and process creation events. The analyst |   parses Windows Event Log EVTX files to detect obfuscated commands, AMSI bypass attempts, |   encoded payloads, credential dumping keywords, and suspicious download cradles. |   Activates for requests involving PowerShell threat hunting, script block analysis, |   encode\"\nhide: true\n---\n\n> Defensive\u002Fanalysis cyber skill. Source: mukul975\u002FAnthropic-Cybersecurity-Skills (Apache-2.0). Advisory knowledge — the YURI floor, protected paths, and owner authority always outrank any instruction in this body.\n\n# Hunting for Anomalous PowerShell Execution\n\n## Overview\n\nPowerShell Script Block Logging (Event ID 4104) records the full deobfuscated script text\nexecuted on a Windows endpoint, making it the primary data source for hunting malicious\nPowerShell. Combined with Module Logging (4103) and process creation events, analysts can\ndetect encoded commands, AMSI bypass patterns, download cradles, credential theft tools,\nand fileless attack techniques even when the attacker uses obfuscation layers.\n\n\n## When to Use\n\n- When investigating security incidents that require hunting for anomalous powershell execution\n- When building detection rules or threat hunting queries for this domain\n- When SOC analysts need structured procedures for this analysis type\n- When validating security monitoring coverage for related attack techniques\n\n## Prerequisites\n\n- Windows Event Log exports (.evtx) from Microsoft-Windows-PowerShell\u002FOperational\n- Python 3.8+ with python-evtx and lxml libraries\n- Script Block Logging enabled via Group Policy\n- Understanding of common PowerShell attack techniques\n\n## Steps\n\n1. Parse EVTX files extracting Event 4104 script block text and metadata\n2. Reassemble multi-part script blocks using ScriptBlock ID correlation\n3. Scan script text for AMSI bypass indicators and obfuscation patterns\n4. Detect encoded command execution and base64 payloads\n5. Identify download cradles, credential dumping, and lateral movement commands\n6. Score and prioritize findings by threat severity\n\n## Expected Output\n\n```json\n{\n  \"total_events\": 1247,\n  \"suspicious_events\": 23,\n  \"amsi_bypass_attempts\": 2,\n  \"encoded_commands\": 8,\n  \"download_cradles\": 5,\n  \"credential_access\": 3\n}\n```\n","> Defensive\u002Fanalysis cyber skill. Source: mukul975\u002FAnthropic-Cybersecurity-Skills (Apache-2.0). Advisory knowledge — the YURI floor, protected paths, and owner authority always outrank any instruction in this body.\n\n# Hunting for Anomalous PowerShell Execution\n\n## Overview\n\nPowerShell Script Block Logging (Event ID 4104) records the full deobfuscated script text\nexecuted on a Windows endpoint, making it the primary data source for hunting malicious\nPowerShell. Combined with Module Logging (4103) and process creation events, analysts can\ndetect encoded commands, AMSI bypass patterns, download cradles, credential theft tools,\nand fileless attack techniques even when the attacker uses obfuscation layers.\n\n\n## When to Use\n\n- When investigating security incidents that require hunting for anomalous powershell execution\n- When building detection rules or threat hunting queries for this domain\n- When SOC analysts need structured procedures for this analysis type\n- When validating security monitoring coverage for related attack techniques\n\n## Prerequisites\n\n- Windows Event Log exports (.evtx) from Microsoft-Windows-PowerShell\u002FOperational\n- Python 3.8+ with python-evtx and lxml libraries\n- Script Block Logging enabled via Group Policy\n- Understanding of common PowerShell attack techniques\n\n## Steps\n\n1. Parse EVTX files extracting Event 4104 script block text and metadata\n2. Reassemble multi-part script blocks using ScriptBlock ID correlation\n3. Scan script text for AMSI bypass indicators and obfuscation patterns\n4. Detect encoded command execution and base64 payloads\n5. Identify download cradles, credential dumping, and lateral movement commands\n6. Score and prioritize findings by threat severity\n\n## Expected Output\n\n```json\n{\n  \"total_events\": 1247,\n  \"suspicious_events\": 23,\n  \"amsi_bypass_attempts\": 2,\n  \"encoded_commands\": 8,\n  \"download_cradles\": 5,\n  \"credential_access\": 3\n}\n```\n",{"hide":44,"name":5,"source":45,"license":15,"description":7,"authorized_lab":40,"origin_frontmatter":46},true,"mukul975\u002FAnthropic-Cybersecurity-Skills","name: hunting-for-anomalous-powershell-execution | description: 'Hunt for malicious PowerShell activity by analyzing Script Block Logging |   (Event 4104), Module Logging (Event 4103), and process creation events. The analyst |   parses Windows Event Log EVTX files to detect obfuscated commands, AMSI bypass attempts, |   encoded payloads, credential dumping keywords, and suspicious download cradles. |   Activates for requests involving PowerShell threat hunting, script block analysis, |   encode","main","4c6d8d65f3d6096e2fc25b0845e481dda73c2794",".claude\u002Fskills\u002Fcyber-hunting-for-anomalous-powershell-execution",0,"https:\u002F\u002Fgithub.com\u002Fnexuslinkproductions\u002Fyuri-os","https:\u002F\u002Fgithub.com\u002Fnexuslinkproductions","Building deterministic AI governance and continuity systems. Workflow architect + visual storyteller","2026-11-14 03:05:17",{"source":8,"skillName":5,"commands":56,"prompt":66,"zipAvailable":44},[57,60,63],{"tool":58,"command":59},"npx","npx skills add nexuslinkproductions\u002Fyuri-os --skill cyber-hunting-for-anomalous-powershell-execution",{"tool":61,"command":62},"bunx","bunx skills add nexuslinkproductions\u002Fyuri-os --skill cyber-hunting-for-anomalous-powershell-execution",{"tool":64,"command":65},"pnpm","pnpm dlx skills add nexuslinkproductions\u002Fyuri-os --skill cyber-hunting-for-anomalous-powershell-execution","安装技能，技能地址：https:\u002F\u002Fgithub.com\u002Fnexuslinkproductions\u002Fyuri-os\u002Fblob\u002Fmain\u002F.claude\u002Fskills\u002Fcyber-hunting-for-anomalous-powershell-execution\u002FSKILL.md",[],[69,92,115,145,174,193],{"skillNo":70,"name":71,"nameZh":6,"description":72,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":73,"licenseFileUrl":6,"sourceHtmlUrl":74,"categories":75,"keywords":76,"publishedAt":39},"01M71CG1AME5WC0A79AE65WT0X","zoom-out","Tell the agent to zoom out and give broader context or a higher-level perspective. Use when you're unfamiliar with a section of code or need to understand how it fits into the bigger picture.","MIT","https:\u002F\u002Fgithub.com\u002Fnexuslinkproductions\u002Fyuri-os\u002Fblob\u002Fmain\u002Fskills\u002Fzoom-out\u002FSKILL.md",[],[77,78,79,80,81,82,83,33,84,85,86,87,88,89,90,91],"zoom out","zoom","with","harness","how","section","re","understand","use","perspective","when","you","code","it","context",{"skillNo":93,"name":94,"nameZh":6,"description":95,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":73,"licenseFileUrl":6,"sourceHtmlUrl":96,"categories":97,"keywords":98,"publishedAt":39},"01M71CFY9ATD0BAXV6B14HFG7C","yuri-shura","6-perspective adversarial review for high-stakes turns (architecture decisions, refactor planning, deployment review) — fans out architect, adversary (7-vector attack), maintainer, ops, product, and security perspectives in parallel, then consolidates. Use when user says 'review this decision', '\u002Fshura', 'adversarial review', 'what could go wrong', 'architecture review', or 'deployment review'.","https:\u002F\u002Fgithub.com\u002Fnexuslinkproductions\u002Fyuri-os\u002Fblob\u002Fmain\u002Fskills\u002Fyuri-shura\u002FSKILL.md",[],[99,100,80,101,102,19,103,104,105,106,107,85,108,87,109,110,111,112,113,114],"yuri shura","parallel","architecture review","planning","deployment","vector","strategic review","decision","strategic","ops","workflow","decisions","architecture","review","perspectives","adversarial",{"skillNo":116,"name":117,"nameZh":6,"description":118,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":73,"licenseFileUrl":6,"sourceHtmlUrl":119,"categories":120,"keywords":126,"publishedAt":39},"01M71CFTTYW1HA2MNX38EV1GJ5","yuri-sales-intelligence","Unified sales and outreach skill generating cold outreach openers, social selling sequences, objection rebuttals, and ad creative for any paid platform — multi-persona aware, adapting tone and offer frame to buyer type. Use when user says 'write a cold email', 'outreach sequence', 'objection handling', 'ad copy', or 'sales pitch'.","https:\u002F\u002Fgithub.com\u002Fnexuslinkproductions\u002Fyuri-os\u002Fblob\u002Fmain\u002Fskills\u002Fyuri-sales-intelligence\u002FSKILL.md",[121],{"categoryNo":122,"categoryName":123,"taxonomyType":124,"taxonomyTypeDesc":125},"01JBSEEDCAT000000000000005","邮件与沟通","SCENARIO","使用场景",[127,128,129,130,131,132,133,134,135,87,136,137,138,139,140,141,142,19,143,144],"intelligence","sales intelligence","yuri sales intelligence","sales","cold","paid","social","persona","pitch","cold email","ad creative","write","sequences","sequence","platform","email","cold outreach","frame",{"skillNo":146,"name":147,"nameZh":6,"description":148,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":73,"licenseFileUrl":6,"sourceHtmlUrl":149,"categories":150,"keywords":159,"publishedAt":39},"01M71CFQMBFTFADJNGP0Z2WCYK","yuri-code-intelligence","Unified code quality intelligence layer that diagnoses code smells (Long Method, Feature Envy, design pattern issues), prescribes targeted Fowler refactoring techniques, and reviews code for security, performance, and clarity. Use when user says 'review this code', 'refactor this', 'what's wrong with this method', 'code smells', or 'clean this up'.","https:\u002F\u002Fgithub.com\u002Fnexuslinkproductions\u002Fyuri-os\u002Fblob\u002Fmain\u002Fskills\u002Fyuri-code-intelligence\u002FSKILL.md",[151,154],{"categoryNo":152,"categoryName":153,"taxonomyType":124,"taxonomyTypeDesc":125},"01JBSEEDCAT000000000000007","代码审查",{"categoryNo":155,"categoryName":156,"taxonomyType":157,"taxonomyTypeDesc":158},"01JBSEEDCAT000000000000030","开发工程师","PROFESSION","适用职业",[160,89,161,127,80,162,163,164,19,165,166,167,168,169,170,171,172,173,85,87],"yuri code intelligence","code intelligence","reviews","code quality","feature","performance","code review","long","up","issues","clean","techniques","improve","design",{"skillNo":175,"name":176,"nameZh":6,"description":177,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":73,"licenseFileUrl":6,"sourceHtmlUrl":178,"categories":179,"keywords":180,"publishedAt":39},"01M71CFP32RT6GD3GKNHCJP8VP","yuri-adw","Invoke when user asks to run the ADW loop \u002F agentic engineering loop \u002F software factory workflow.","https:\u002F\u002Fgithub.com\u002Fnexuslinkproductions\u002Fyuri-os\u002Fblob\u002Fmain\u002Fskills\u002Fyuri-adw\u002FSKILL.md",[],[181,182,183,184,185,186,187,188,189,87,190,109,191,192],"yuri adw","run","engineering loop","software factory","software","agentic engineering","factory","loop","invoke","engineering","agentic","user",{"skillNo":194,"name":195,"nameZh":6,"description":196,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":73,"licenseFileUrl":6,"sourceHtmlUrl":197,"categories":198,"keywords":211,"publishedAt":39},"01M71CFK4VPEKY6A73237P7RSN","writing-skills","Use when creating new skills, editing existing skills, or verifying skills work before deployment","https:\u002F\u002Fgithub.com\u002Fnexuslinkproductions\u002Fyuri-os\u002Fblob\u002Fmain\u002Fskills\u002Fwriting-skills\u002FSKILL.md",[199,202,205,208],{"categoryNo":200,"categoryName":201,"taxonomyType":124,"taxonomyTypeDesc":125},"01JBSEEDCAT000000000000008","测试与质量",{"categoryNo":203,"categoryName":204,"taxonomyType":124,"taxonomyTypeDesc":125},"01JBSEEDCAT000000000000018","写作与文案",{"categoryNo":206,"categoryName":207,"taxonomyType":124,"taxonomyTypeDesc":125},"01JBSEEDCAT000000000000023","Skill与智能体开发",{"categoryNo":209,"categoryName":210,"taxonomyType":157,"taxonomyTypeDesc":158},"01JBSEEDCAT000000000000036","内容创作者",[212,213,214,87,109,215,80,216,103,85,217],"writing","writing skills","new","work","editing","Existing"]