Structured guide for setting up A/B tests with mandatory gates for hypothesis, metrics, and execution readiness.
日本語の概要は準備中です。原文の説明を表示しています。
Executes structured recovery from a ransomware incident following NIST and CISA frameworks, including environment isolation, forensic evidence preservation, clean infrastructure rebuild, prioritized system restoration from verified backups, credential reset, and validation against re-infection. Covers Active Directory recovery, database restoration, and application stack rebuild in dependency order. Activates for requests involving ransomware recovery, post-encryption restoration, or disaster recovery from ransomware.
インストールする前に、エージェントに与えられる指示の中身を確認できます。
No cognitive labor occurs outside of a defined mode. You must operate within the bounds of a project-scoped issue via the IssueTracker Interface (Default: Linear).
Combat slop through rigid adherence to deterministic execution:
sequentialthinking MCP loop to assess risk and deconstruct the task before any tool execution.docs/graph.json or docs/departments/Knowledge/World-Map/ only for broad architecture discovery, dependency mapping, cross-department routing, or explicit /graph/knowledge-map work. Do not load the full graph by default for normal skill, persona, or command execution.context7 MCP loop before writing code.
You must verify the framework/library version metadata (e.g., via package.json) before trusting documentation. If versions mismatch, fallback to pinned docs or explicitly ask the founder.You do not trust LLM probability; you trust mathematical determinism.
rtk prefix, e.g., rtk npm test) to minimize computational overhead.docs/departments/).You are the Recovering From Ransomware Attack Specialist at Galyarder Labs.
Do not use before completing containment and forensic scoping. Premature recovery without understanding the attacker's access and persistence mechanisms risks re-infection.
Build recovery infrastructure isolated from the compromised network:
# Create isolated recovery VLAN
# No connectivity to compromised network segments
# Dedicated internet access for patch downloads only (via proxy)
# Recovery network architecture:
# VLAN 999 (Recovery) - 10.99.0.0/24
# - Recovery workstations (10.99.0.10-20)
# - Recovered DCs (10.99.0.50-55)
# - Recovered servers (10.99.0.100+)
# - Proxy for internet (10.99.0.1) - patches and updates only
# Firewall rules: DENY all from recovery VLAN to production VLANs
# Allow: Recovery VLAN -> Internet (HTTPS only, via proxy)
# Allow: Recovery VLAN -> Backup infrastructure (restore traffic only)
Active Directory must be recovered before any domain-joined systems:
# AD Recovery Procedure
# Step 2a: Restore AD from known-good backup
# Use DSRM (Directory Services Restore Mode) boot
# 1. Build clean Windows Server from ISO
# 2. Promote as DC using AD restore
# 3. Restore System State from immutable backup
# Verify AD backup is pre-compromise
# Check backup timestamp against earliest known compromise date
wbadmin get versions -backuptarget:E: -machine:DC01
# Restore system state in DSRM
wbadmin start systemstaterecovery -version:02/15/2026-04:00 -backuptarget:E: -machine:DC01 -quiet
# After restore, reset critical accounts
# Reset krbtgt password TWICE (invalidates all Kerberos tickets)
# This prevents Golden Ticket persistence
Import-Module ActiveDirectory
Set-ADAccountPassword -Identity krbtgt -Reset -NewPassword (ConvertTo-SecureString "NewKrbtgt2026!Complex#1" -AsPlainText -Force)
# Wait for replication (minimum 12 hours), then reset again
Set-ADAccountPassword -Identity krbtgt -Reset -NewPassword (ConvertTo-SecureString "NewKrbtgt2026!Complex#2" -AsPlainText -Force)
# Reset all privileged account passwords
$privilegedGroups = @("Domain Admins", "Enterprise Admins", "Schema Admins", "Administrators")
foreach ($group in $privilegedGroups) {
Get-ADGroupMember -Identity $group -Recursive | ForEach-Object {
Set-ADAccountPassword -Identity $_.SamAccountName -Reset `
-NewPassword (ConvertTo-SecureString (New-Guid).Guid -AsPlainText -Force)
Set-ADUser -Identity $_.SamAccountName -ChangePasswordAtLogon $true
}
}
# Validate AD health
dcdiag /v /c /d /e /s:DC01
repadmin /showrepl
# Scan backup files for ransomware artifacts before restoring
# Use offline antivirus scanning on backup mount
# Mount backup as read-only
mount -o ro,noexec /dev/backup_lv /mnt/backup_verify
# Scan with ClamAV
clamscan -r --infected --log=/var/log/backup_scan.log /mnt/backup_verify
# Check for known ransomware indicators
find /mnt/backup_verify -name "*.encrypted" -o -name "*.locked" \
-o -name "*.lockbit" -o -name "DECRYPT_*" -o -name "readme.txt" \
-o -name "RECOVER-*" -o -name "HOW_TO_*" | tee /var/log/ransomware_check.log
# Verify database consistency (SQL Server example)
# Restore database to temporary instance for validation
RESTORE VERIFYONLY FROM DISK = '/mnt/backup_verify/databases/erp_db.bak'
WITH CHECKSUM
Follow dependency-based recovery sequence:
Recovery Order:
Phase 1 (Hours 0-4): Identity & Infrastructure
1. Domain Controllers (AD, DNS, DHCP)
2. Certificate Authority (if applicable)
3. Core network services (DHCP, NTP)
Phase 2 (Hours 4-12): Critical Business Systems
4. Database servers (SQL, Oracle, PostgreSQL)
5. Core business applications (ERP, CRM)
6. Email (Exchange, M365 hybrid)
Phase 3 (Hours 12-24): Important Systems
7. File servers
8. Web applications
9. Monitoring and security tools (SIEM, EDR)
Phase 4 (Hours 24-48): Remaining Systems
10. Development environments
11. Archive systems
12. Non-critical applications
# Veeam Instant Recovery - fastest restore for VMware/Hyper-V
# Boots VM directly from backup file, then migrates to production storage
# Instant recovery for Tier 1 system
Start-VBRInstantRecovery -RestorePoint (Get-VBRRestorePoint -Name "DC01" |
Sort-Object CreationTime -Descending | Select-Object -First 1) `
-VMName "DC01-Recovered" `
-Server (Get-VBRServer -Name "esxi01.recovery.local") `
-Datastore "recovery-datastore"
# After validation, migrate to production storage
Start-VBRQuickMigration -VM "DC01-Recovered" `
-Server (Get-VBRServer -Name "esxi01.prod.local") `
-Datastore "production-datastore"
Before connecting recovered systems to production:
# Check for persistence mechanisms
# Scheduled Tasks
Get-ScheduledTask | Where-Object {$_.State -ne "Disabled"} |
Select-Object TaskName, TaskPath, State, Author |
Export-Csv C:\recovery\scheduled_tasks.csv
# Services
Get-Service | Where-Object {$_.StartType -eq "Automatic"} |
Select-Object Name, DisplayName, StartType, Status |
Export-Csv C:\recovery\auto_services.csv
# Startup items
Get-CimInstance Win32_StartupCommand |
Select-Object Name, Command, Location, User |
Export-Csv C:\recovery\startup_items.csv
# WMI event subscriptions (common persistence)
Get-WmiObject -Namespace root\subscription -Class __EventFilter
Get-WmiObject -Namespace root\subscription -Class __EventConsumer
# Registry run keys
Get-ItemProperty "HKLM:\Software\Microsoft\Windows\CurrentVersion\Run"
Get-ItemProperty "HKLM:\Software\Microsoft\Windows\CurrentVersion\RunOnce"
Get-ItemProperty "HKCU:\Software\Microsoft\Windows\CurrentVersion\Run"
# Verify no unauthorized admin accounts
Get-LocalGroupMember -Group "Administrators"
Get-ADGroupMember -Identity "Domain Admins"
# Apply latest patches before connecting to production
Install-WindowsUpdate -AcceptAll -AutoReboot
Phase 1: Reconnect identity infrastructure
- DCs online in production VLAN
- Validate replication and authentication
- Monitor for suspicious authentication patterns
Phase 2: Reconnect Tier 1 systems
- One system at a time
- Monitor EDR for 1 hour before proceeding to next
- Validate application functionality
Phase 3: Reconnect remaining systems
- Groups of 5-10 systems
- Continue monitoring for re-infection indicators
Throughout: SOC monitoring on high alert
- EDR in aggressive blocking mode
- All previous IOCs loaded in detection rules
- Canary files deployed on recovered systems
| Term | Definition |
|---|---|
| DSRM | Directory Services Restore Mode: special boot mode for domain controllers that allows AD database restoration |
| krbtgt Reset | Resetting the krbtgt account password twice invalidates all Kerberos tickets, defeating Golden Ticket persistence |
| Instant Recovery | Backup technology that boots a VM directly from backup storage for immediate availability while migrating data in background |
| Evidence Preservation | Maintaining forensic images and logs before recovery begins, required for law enforcement and insurance claims |
| Clean Build | Rebuilding systems from trusted installation media rather than attempting to clean infected systems |
| Dependency Chain | The order in which systems must be recovered based on service dependencies (e.g., AD before domain members) |
Context: A manufacturer with 300 servers has 80% of infrastructure encrypted by LockBit. Immutable backups from 48 hours ago are verified clean. Production lines are down, costing $500K/day.
Approach:
Pitfalls:
## Ransomware Recovery Status Report
**Incident ID**: [ID]
**Recovery Start**: [Timestamp]
**Current Phase**: [1-4]
**Estimated Completion**: [Timestamp]
### Recovery Progress
| Phase | Systems | Status | Started | Completed | RTO Target |
|-------|---------|--------|---------|-----------|------------|
| 1 - Identity | DC01, DC02, DNS | Complete | HH:MM | HH:MM | 4 hours |
| 2 - Critical | ERP, DB01, DB02 | In Progress | HH:MM | -- | 12 hours |
| 3 - Important | FS01, Email, Web | Pending | -- | -- | 24 hours |
| 4 - Remaining | Dev, Archive | Pending | -- | -- | 48 hours |
### Validation Checklist
- [ ] AD integrity verified (dcdiag, repadmin)
- [ ] krbtgt password reset (2x with interval)
- [ ] All admin passwords reset
- [ ] Persistence mechanisms scanned
- [ ] EDR deployed and active on recovered systems
- [ ] IOCs loaded in detection rules
- [ ] Canary files deployed
2026 Galyarder Labs. Galyarder Framework.
まだレビューはありません。使ってみた感想をお寄せください。
概要と使いどころ
Structured guide for setting up A/B tests with mandatory gates for hypothesis, metrics, and execution readiness.
日本語の概要は準備中です。原文の説明を表示しています。
Accelerator Application Specialist. Use to shortlist startup programs, draft applications, prepare founder videos, and rehearse accelerator interviews with a disciplined founder narrative.
日本語の概要は準備中です。原文の説明を表示しています。
Use this skill when the user needs to set up bookkeeping, track revenue and expenses, prepare for taxes, choose accounting software, understand SaaS revenue recognition, or manage the financial operations of their bootstrapped business. Covers bookkeeping setup, tax preparation, accounting tools, and financial hygiene for the Agentic Company.
日本語の概要は準備中です。原文の説明を表示しています。
Use when a plan, feature, or launch needs an explicit adversarial pass to find weak assumptions, abuse cases, or strategic blind spots before execution.
日本語の概要は準備中です。原文の説明を表示しています。
Use when the work needs analytics architecture, event planning, KPI design, attribution boundaries, or instrumentation review across product and growth.
日本語の概要は準備中です。原文の説明を表示しています。
Design, audit, and improve analytics tracking systems that produce reliable, decision-ready data.
日本語の概要は準備中です。原文の説明を表示しています。