rule Windows_Trojan_Blister_487b0966 {
meta:
author = "Elastic Security"
id = "487b0966-fb24-4c41-84cc-f3a389461ddc"
fingerprint = "7111f2f9746e056f6ac5e08d904f71628a548b4ab2c1181dec0a38f0f8387878"
creation_date = "2023-09-11"
last_modified = "2023-09-20"
threat_name = "Windows.Trojan.Blister"
reference = "https://www.elastic.co/security-labs/elastic-security-uncovers-blister-malware-campaign"
reference_sample = "5fc79a4499bafa3a881778ef51ce29ef015ee58a587e3614702e69da304395db"
severity = 100
arch_context = "x86, arm64"
scan_context = "file, memory"
license = "Elastic License v2"
os = "windows"
strings:
$b_loader0 = { 65 48 8B 04 25 60 00 00 00 44 8B D3 41 BE ?? ?? ?? ?? 48 8B 50 18 48 83 C2 ?? 48 8B 0A }
$b_loader1 = { 0F B7 C0 4D 8D 49 02 41 33 C0 44 69 C0 ?? ?? ?? ?? 41 8B C0 C1 E8 0F 44 33 C0 41 0F B7 01 66 85 C0 }
$b_loader2 = { 66 45 03 DC 49 83 C2 04 41 0F B7 C3 49 83 C0 02 3B C6 }
condition:
2 of them
}