rule Mallox_v2_ransomware_1 { meta: description = "Detects Mallox v2 ransomware" author = "RansomwareMonitor" date = "2026-03-06" hash = "ac65a4392b472684fe9308e23284820061cfb3b34c5faf8ca4996a923134eef1" strings: $h0 = { 14 06 DB 28 1C BC 6F B4 91 4B E3 BD 0D 99 17 38 90 6E 20 73 8E 6D 3B } $r1 = /README\..{3,10}/i $h2 = { EE E5 04 96 2E EB D1 E6 80 DD FA C7 2B 4 } $r3 = /README\..{3,10}/i $s4 = "Do not modify" nocase condition: uint16(0) == 0x5A4D and filesize < 5MB and 2 of them } rule Mallox_v2_ransomware_2 { meta: description = "Detects Mallox v2 ransomware" author = "RansomwareMonitor" date = "2026-03-06" hash = "62ff582aa679b0e3062e3cc0a5ba08a61f55f6c23e0d0cfd6138772bbb690b43" strings: $s0 = "RSA-2048" nocase $h1 = { 3D 24 8A 13 3E 81 45 8E 64 3C B4 AB 16 B7 1B 3C FB } $s2 = "Do not modify" nocase $r3 = /[13][a-km-zA-HJ-NP-Z1-9]{25,34}/ $s4 = "DECRYPT" nocase $r5 = /[13][a-km-zA-HJ-NP-Z1-9]{25,34}/ $r6 = /[A-Za-z0-9]{56}\.onion/ $h7 = { AA 58 D6 1E 4E F4 F7 71 EF 5F } condition: uint16(0) == 0x5A4D and filesize < 5MB and 3 of them }