Ransomware: Negotiation and Recovery | Decripte

Ransomware negotiation is a complex and controversial process that organizations may face after an attack. It involves difficult decisions about payment, recovery, and legal implications.

Context and Dilemma

After a ransomware attack, an organization faces a critical decision: pay the ransom or pursue alternative recovery options. There is no simple answer - each situation requires careful analysis of multiple factors.

Important: Authorities generally discourage payments, as they fund criminal activities. However, business realities may force organizations to consider this option.

Arguments Against Payment

Funding Crime: Payments sustain criminal operations and incentivize new attacks.

No Guarantees: There is no guarantee that attackers will provide a decryption key or refrain from leaking data.

Marked as a Target: Organizations that pay may be marked for future attacks.

Legal Implications: Paying groups on sanctions lists may be illegal.

Reputation: A public payment can damage reputation and trust.

Arguments in Favor of Considering Payment

Faster Recovery: It may be the fastest path to restoring critical operations.

Cost-Benefit: Prolonged downtime can cost more than the ransom.

Unrecoverable Data: When backups are inadequate or also encrypted.

Data Exfiltration: Double extortion - attackers threaten to leak stolen data.

Regulatory Obligations: The need to demonstrate efforts to protect data.

Decision Process

1. Assess the Situation: Extent of encryption, affected systems, available backups.

2. Cost Analysis: Compare the cost of the ransom vs. the cost of downtime and alternative recovery.

3. Legal Consultation: Verify legal implications, especially sanctions.

4. Consultation with Authorities: FBI, Federal Police, cybersecurity agencies.

5. Impact Analysis: Impact on business, customers, compliance, reputation.

6. Executive Decision: Final decision with C-level and the board.

Professional Negotiators

Organizations often hire specialized negotiators:

Expertise: They know the tactics of ransomware groups and can assess credibility.

Value Reduction: Experienced negotiators can often reduce amounts substantially.

Communication Management: They handle the stress of communicating with criminals.

Technical Knowledge: They verify decryption keys and run tests before final payment.

Negotiation Tactics

Assess Credibility: Established groups tend to provide keys; newcomers are less reliable.

Request Proof: Ask for decryption of a test file before paying.

Negotiate the Amount: Demonstrate financial limitations and negotiate a discount.

Timing: Do not show extreme desperation, but also do not ignore them for too long.

Staged Payment: Negotiate an initial partial payment before the full amount.

Payment Logistics

Cryptocurrencies: Bitcoin is the most common, but Monero is growing due to greater anonymity.

Exchanges: The organization needs to set up an account on a crypto exchange.

Compliance: Verify that the group is not on sanctions lists (OFAC in the US).

Documentation: Keep detailed records of all communications and transactions.

After Payment

Key Testing: Test the decryption tool on a sample before applying it broadly.

Controlled Decryption: Decrypt systems in order of priority, with backups beforehand.

Do Not Trust: Assume backdoors may remain - rebuild systems from scratch when possible.

Forensic Analysis: Investigate the root cause and attack vectors.

Hardening: Implement controls to prevent recurrence.

Alternatives to Payment

Backup Restoration: Always the first option if viable backups exist.

Decryption Tools: The No More Ransom Project offers free tools for some variants.

Rebuilding: Rebuild systems from scratch if the data is not critical.

Partial Recovery: Operate at reduced capacity while rebuilding.

The Role of Cyber Insurance

Cyber insurance policies often cover:

• Ransom payment (where legal)
• Specialized negotiation services
• Recovery and restoration costs
• Incident response costs
• Legal fees
• Notification and credit monitoring costs

Legal and Ethical Considerations

Sanctions: Verify whether the attacking group is on sanctions lists (OFAC, UN).

Terrorism Financing: Some groups have ties to terrorism.

Reporting Obligations: Many jurisdictions require reporting ransomware incidents.

Fiduciary Responsibility: Executives have a duty to protect the interests of the organization.