malware-ransomware-artifacts

| | ID Ransomware | Online service identifying ransomware variant from samples | | No More Ransom | Free decryption tools from law enforcement partnerships | | Volatility | Memory forensics for encryption key and malware artifact recovery | | Chainsaw/Hayabusa | Windows Event Log analysis for attack timeline reconstruction | | PECmd | Prefetch analysis confirming ransomware executable execution | | YARA | Pattern matching for ransomware variant identification | | Any.Run/Joe Sandbox | Online malware sandboxes for ransomware behavior analysis | | Capa | Mandiant tool identifying malware capabilities from static analysis |

Common Scenarios

Scenario 1: LockBit Attack via RDP Trace initial access through RDP brute force in event logs, identify attacker IP and compromised account, follow lateral movement through network logons, find LockBit deployment via PsExec or GPO, document encryption timeline from file timestamps, check for data exfiltration before encryption.

Scenario 2: Phishing-Initiated Ransomware Trace phishing email through browser history and email artifacts, identify malicious attachment execution in Prefetch, follow Cobalt Strike beacon communication in network logs, trace privilege escalation and domain compromise, document ransomware deployment across the network.

Scenario 3: Supply Chain Ransomware Attack Identify the compromised software update mechanism, trace the malicious update distribution in application logs, analyze the ransomware payload delivered via the trusted channel, assess which systems received the update, determine if the vendor was notified.

Scenario 4: Recovery from Partial Encryption Determine which systems and files were encrypted before containment, check for surviving volume shadow copies, verify backup integrity and restoration capability, attempt memory-based key recovery, contact law enforcement for potential decryptor availability.

Output Format

Ransomware Investigation Summary:
  Variant: LockBit 3.0
  First Seen: 2024-01-18 02:00:00 UTC
  Encryption Duration: 4 hours 23 minutes
  Systems Encrypted: 45 out of 200 (containment stopped spread)

  Attack Timeline:
    2024-01-10 14:32 - RDP brute force from 203.0.113.45 (1,234 attempts)
    2024-01-10 15:00 - Successful RDP login as admin_backup
    2024-01-12 02:00 - Mimikatz executed (credential dump)
    2024-01-12 02:30 - Domain Admin credentials obtained
    2024-01-15 03:00 - Data exfiltration (45 GB to 185.x.x.x)
    2024-01-18 02:00 - LockBit deployed via PsExec to 45 systems
    2024-01-18 06:23 - Encryption completed on affected systems

  Recovery Options:
    Decryptor: Not available (LockBit 3.0)
    Shadow Copies: Deleted on all systems
    Backups: Last clean backup 2024-01-09 (9 days of data loss)
    Memory Keys: Not recovered (systems rebooted)

  IOCs:
    Ransomware Hash: a1b2c3d4e5f6...
    C2 IP: 185.x.x.x
    Bitcoin: bc1q...
    Tor: http://lockbit...onion