Multi-Tier Post-Incident Forensic & Executive Reporting
PILLAR 5 · REPORTGenerates Board Briefings, Technical DFIR Reports, Insurance Proof-of-Loss & HIPAA / SEC 8-K Regulatory Disclosures.
AEGIS INCIDENT RESPONSE & DIGITAL FORENSICS GROUP
EXECUTIVE CYBER INCIDENT BOARD BRIEFING
Case File: INC-2026-8841 · Issued: 10/21/2026 · Classification: STRICTLY CONFIDENTIAL
DIGITAL SEAL
SHA-256: 0x9f88a...e102
VICTIM ORGANIZATIONMercy General Health System
THREAT ACTOR / FAMILYLockBit 3.0 (Black) (LockBit Supporter Gang (FIN12 Affiliate))
IMPACTED ASSETS24 Hosts / 1840 GB
RECOVERY PATH / RTOBACKUP_ONLY (18.5h)
1. Incident Overview & Operational Impact Summary
On 2026-08-23T06:14:00Z, Mercy General Health System experienced an automated ransomware intrusion deploying LockBit 3.0 (Black). The threat actor gained initial execution via compromised administrator credentials, executing mass encryption across 24 core virtual machines and attempting shadow copy deletion. Forensic evidence confirms the threat actor demanded $1,800,000 USD in BTC (bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh).
2. Cryptographic Analysis & Feasibility Findings
| Cipher Algorithm | Encryption Mode | Key Size | Entropy Score | Recoverability Status |
|---|---|---|---|---|
| ChaCha20 + Curve25519 | Block Cipher (512B Header) | 256-bit | 7.988 (High) | Recovered via Immutable S3 |
| AES-256-CTR | Intermittent (50%) | 256-bit | 7.912 (High) | Headers Rebuilt |
3. Regulatory Compliance & Forensic Sign-Off Attestation
All systems underwent mandatory 6-Point Clean Validation gatekeeper checks prior to production reconnection. No data ransom was paid to sanctioned extortion entities (OFAC compliance validated).
Elena Rostova, CISSP
Principal Incident Commander · Aegis DFIR
Dr. Arthur Vance
Chief Information Security Officer · Mercy General Health System