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VIRUSNAME_PREFIX("SUBMIT.filetype")
VIRUSNAMES("CL_TYPE_MSWORD", "CL_TYPE_MSPPT", "CL_TYPE_MSXL",
"CL_TYPE_OOXML_WORD", "CL_TYPE_OOXML_PPT", "CL_TYPE_OOXML_XL",
"CL_TYPE_MSEXE", "CL_TYPE_PDF", "CL_TYPE_MSOLE2", "CL_TYPE_UNKNOWN", "InActive")
/* Target type is 0, all relevant files */
TARGET(0)
/* Declares to run bytecode only for preclassification (affecting only preclass files) */
PRECLASS_HOOK_DECLARE
/* JSON API call will require FUNC_LEVEL_098_5 = 78 */
/* PRECLASS_HOOK_DECLARE will require FUNC_LEVEL_098_7 = 80 */
FUNCTIONALITY_LEVEL_MIN(FUNC_LEVEL_098_7)
#define STR_MAXLEN 256
int entrypoint()
{
int32_t objid, type, strlen;
char str[STR_MAXLEN];
/* check is json is available, alerts on inactive (optional) */
if (!json_is_active())
foundVirus("InActive");
/* acquire the filetype object */
objid = json_get_object("FileType", 8, 0);
if (objid <= 0) {
debug_print_str("json object has no filetype!", 28);
return 1;
}
type = json_get_type(objid);
if (type != JSON_TYPE_STRING) {
debug_print_str("json object filetype property is not string!", 44);
return 1;
}
/* acquire string length, note +1 is for the NULL terminator */
strlen = json_get_string_length(objid) + 1;
/* prevent buffer overflow */
if (strlen > STR_MAXLEN)
strlen = STR_MAXLEN;
/* acquire string data, note strlen includes NULL terminator */
if (json_get_string(str, strlen, objid)) {
/* debug print str (with '\n' and prepended message */
debug_print_str(str, strlen);
/* check the contained object's filetype */
if (strlen == 14 && !memcmp(str, "CL_TYPE_MSEXE", 14)) {
foundVirus("CL_TYPE_MSEXE");
return 0;
}
if (strlen == 12 && !memcmp(str, "CL_TYPE_PDF", 12)) {
foundVirus("CL_TYPE_PDF");
return 0;
}
if (strlen == 19 && !memcmp(str, "CL_TYPE_OOXML_WORD", 19)) {
foundVirus("CL_TYPE_OOXML_WORD");
return 0;
}
if (strlen == 18 && !memcmp(str, "CL_TYPE_OOXML_PPT", 18)) {
foundVirus("CL_TYPE_OOXML_PPT");
return 0;
}
if (strlen == 17 && !memcmp(str, "CL_TYPE_OOXML_XL", 17)) {
foundVirus("CL_TYPE_OOXML_XL");
return 0;
}
if (strlen == 15 && !memcmp(str, "CL_TYPE_MSWORD", 15)) {
foundVirus("CL_TYPE_MSWORD");
return 0;
}
if (strlen == 14 && !memcmp(str, "CL_TYPE_MSPPT", 14)) {
foundVirus("CL_TYPE_MSPPT");
return 0;
}
if (strlen == 13 && !memcmp(str, "CL_TYPE_MSXL", 13)) {
foundVirus("CL_TYPE_MSXL");
return 0;
}
if (strlen == 15 && !memcmp(str, "CL_TYPE_MSOLE2", 15)) {
foundVirus("CL_TYPE_MSOLE2");
return 0;
}
foundVirus("CL_TYPE_UNKNOWN");
return 0;
}
return 0;
}
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