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80 lines
2.0 KiB
Perl
80 lines
2.0 KiB
Perl
#! c:\perl\bin\perl.exe
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#-----------------------------------------------------------
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# fileless.pl
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#
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#
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# Change history
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# 20150110 - updated with additional detection
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# 20150101 - Created
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#
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# Ref:
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# https://www.mysonicwall.com/sonicalert/searchresults.aspx?ev=article&id=761
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# http://www.malwaretech.com/2014/12/phase-bot-fileless-rootkit.html
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# http://www.kernelmode.info/forum/viewtopic.php?f=16&t=3669
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#
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#
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# copyright 2015 QAR, LLC
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# Author: H. Carvey, keydet89@yahoo.com
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#-----------------------------------------------------------
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package fileless;
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use strict;
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my %config = (hive => "All",
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hasShortDescr => 1,
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hasDescr => 0,
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hasRefs => 0,
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osmask => 22,
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version => 20150110);
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sub getConfig{return %config}
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sub getShortDescr {
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return "Scans a hive file looking for fileless malware entries";
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}
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sub getDescr{}
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sub getRefs {}
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sub getHive {return $config{hive};}
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sub getVersion {return $config{version};}
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my $VERSION = getVersion();
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my %vals;
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sub pluginmain {
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my $class = shift;
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my $file = shift;
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my $reg = Parse::Win32Registry->new($file);
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my $root_key = $reg->get_root_key;
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::logMsg("Launching fileless v.".$VERSION);
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::rptMsg("fileless v.".$VERSION); # banner
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::rptMsg("(".getHive().") ".getShortDescr()."\n"); # banner
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traverse($root_key);
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}
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sub traverse {
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my $key = shift;
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my $ts = $key->get_timestamp();
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foreach my $val ($key->get_list_of_values()) {
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my $type = $val->get_type();
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if ($type == 1 || $type == 2) {
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my $data = $val->get_data();
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$data = lc($data);
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if ($data =~ m/^rundll32 javascript/ || $data =~ m/^mshta/) {
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::rptMsg("**Possible fileless malware found\.");
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my $path = $key->get_path();
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my @p = split(/\\/,$path);
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$path = join('\\',@p[1..(scalar(@p) - 1)]);
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::rptMsg($path);
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::rptMsg("LastWrite time: ".gmtime($ts)." UTC");
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::rptMsg("Data: ".$data);
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::rptMsg("");
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}
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}
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}
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foreach my $subkey ($key->get_list_of_subkeys()) {
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traverse($subkey);
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}
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}
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1; |