Learning Ransomware Response & Recovery

Chapter 12. Advanced Analysis and Forensics

You’ve identified the variant, scoped the damage, and checked for decryptors. Chapter 11’s essential analysis gave you what most organizations need: enough intelligence to guide containment, report to regulators, and start recovery. Sarah at ZapMart confirmed LockBit 3.0 via VirusTotal. Maria used NoMoreRansom.org. Keith checked file extensions and called it a day. For many incidents, that’s enough.

But some attacks require way more than basic analysis.

ALPHV’s polymorphic code dodged Change Healthcare’s signature-based detection for a long time. A Seattle logistics firm’s Conti infection (discussed later in this chapter) wiped every log file, leaving the IRT blind to how it spread. BuyMore’s Cl0p attack hid in a SaaS account that wasn’t even on their asset inventory, exfiltrating 1TB before anyone noticed. The California manufacturer’s ALPHV breach moved laterally through cloud APIs that their EDR never monitored. These attacks demand techniques that go beyond “upload the ransom note to VirusTotal.” This is where advanced forensics come in:

• Writing custom YARA rules to detect variants that evade commercial tools

• Monitoring dark web leak sites to confirm what data was stolen

• Extracting encryption keys from memory dumps using Volatility

• Reverse-engineering ransomware executables to understand how they work

• Analyzing cloud-specific logs that traditional tools miss

• Building comprehensive forensic reports that satisfy regulators ...