rule Windows_Ransomware_Mespinoza_3adb59f5 {
meta:
author = "Elastic Security"
id = "3adb59f5-a4af-48f2-8029-874a62b23651"
fingerprint = "f44a79048427e79d339d3b0ccaeb85ba6731d5548256a2615f32970dcf67578f"
creation_date = "2021-08-05"
last_modified = "2021-10-04"
threat_name = "Windows.Ransomware.Mespinoza"
reference_sample = "6f3cd5f05ab4f404c78bab92f705c91d967b31a9b06017d910af312fa87ae3d6"
severity = 90
arch_context = "x86, arm64"
scan_context = "file, memory"
license = "Elastic License v2"
os = "windows"
strings:
$a1 = "Don't try to use backups because it were encrypted too." ascii fullword
$a2 = "Every byte on any types of your devices was encrypted." ascii fullword
$a3 = "n.pysa" wide fullword
condition:
all of them
}