import "pe"
rule LimaAlfa
{
meta:
copyright = "2015 Novetta Solutions"
author = "Novetta Threat Research & Interdiction Group - trig@novetta.com"
Source = "c9fbad7fc7ff7688776056be3a41714a1f91458a7b16c37c3c906d17daac2c8b"
Status = "Signature is too loose to be useful."
strings:
/*
33 C0 xor eax, eax
66 8B 02 mov ax, [edx]
8B E8 mov ebp, eax
81 E5 00 F0 FF FF and ebp, 0FFFFF000h
81 FD 00 30 00 00 cmp ebp, 3000h
75 0D jnz short loc_4019FB
8B 6C 24 18 mov ebp, [esp+10h+arg_4]
25 FF 0F 00 00 and eax, 0FFFh
03 C7 add eax, edi
01 28 add [eax], ebp
*/
$a = {33 C0 66 [2] 8B ?? 81 ?? 00 F0 FF FF 81 ?? 00 30 00 00 75 ?? 8B [3] 25 FF 0F 00 00 03 C7 01}
condition:
$a in ((pe.sections[pe.section_index(".text")].raw_data_offset)..(pe.sections[pe.section_index(".text")].raw_data_offset + pe.sections[pe.section_index(".text")].raw_data_size))
}