Nightmare

First seen

2020-07-01 00:00:00

Malware type

ransomware

Family

Malware family

Profile updated

2026-07-07 16:16:56

Targeted industries: financial-services healthcare-and-pharmaceutical retail-and-hospitality

Context

Nightmare is a ransomware family that encrypts data on infected systems demanding a ransom for decryption. It has been observed targeting multiple sectors including financial services, healthcare, and retail.

Detection coverage

• 1 YARA rules

Detection rules

• SIGNATURE_BASE_HKTL_Bluehammer_Apr26 (yara-rule)