rule APT_NGO_wuaclt { meta: author = "@iocbucket" description = "Yara rule for the PDF delivery vehicle and Communications based on APT 1" strings: $a = "%%APPDATA%%\\Microsoft\\wuauclt\\wuauclt.dat" $b = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" $c = "/news/show.asp?id%d=%d" $d = "%%APPDATA%%\\Microsoft\\wuauclt\\" $e = "0l23kj@nboxu" $f = "%%s.asp?id=%%d&Sid=%%d" $g = "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SP Q%%d)" $h = "Cookies: UseID=KGIOODAOOK%%s" condition: ($a and $b and $c) or ($d and $e) or ($f and $g and $h) } rule APT_NGO_wuaclt_PDF { meta: author = "@iocbucket" description = "Yara rule for the PDF delivery vehicle and Communications based on APT 1" strings: $pdf = "%PDF" nocase $comment = {3C 21 2D 2D 0D 0A 63 57 4B 51 6D 5A 6C 61 56 56 56 56 56 56 56 56 56 56 56 56 56 63 77 53 64 63 6A 4B 7A 38 35 6D 37 4A 56 6D 37 4A 46 78 6B 5A 6D 5A 6D 52 44 63 5A 58 41 73 6D 5A 6D 5A 7A 42 4A 31 79 73 2F 4F 0D 0A} condition: $pdf at 0 and $comment in (0..200) }