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mukul975
31 lines
1.1 KiB
Markdown
31 lines
1.1 KiB
Markdown
# Ransomware Encryption Standards Reference
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## Common Encryption Schemes by Family
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| Family | Symmetric | Asymmetric | Key Size |
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|--------|-----------|-----------|----------|
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| Rhysida | AES-256-CTR | RSA-4096 | 256-bit |
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| Qilin.B | AES-256-CTR/ChaCha20 | RSA-4096 OAEP | 256-bit |
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| Medusa | AES-256 | RSA public key | 256-bit |
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| LockBit 3.0 | AES-256-CTR | Curve25519 | 256-bit |
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| BlackCat/ALPHV | AES-128/ChaCha20 | RSA-2048 | 128/256-bit |
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| Conti | ChaCha20 | RSA-4096 | 256-bit |
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## Windows Cryptographic API Cheat Sheet
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| Function | Purpose |
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|----------|---------|
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| CryptAcquireContext | Acquire crypto provider handle |
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| CryptGenKey | Generate symmetric/asymmetric key |
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| CryptImportKey | Import key blob |
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| BCryptOpenAlgorithmProvider | Open CNG algorithm |
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| BCryptGenerateSymmetricKey | Create symmetric key |
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## MITRE ATT&CK Techniques
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- T1486: Data Encrypted for Impact
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- T1490: Inhibit System Recovery
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- T1083: File and Directory Discovery
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- T1082: System Information Discovery
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## References
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- [No More Ransom Decryptors](https://www.nomoreransom.org/en/decryption-tools.html)
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- [ID Ransomware](https://id-ransomware.malwarehunterteam.com/)
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