2018-01-03 14:43:27 -05:00

91 lines
2.5 KiB
Perl

#-----------------------------------------------------------
#comfoo
#
#
# Change history
# 20131007 - created
#
#
# References
# http://www.secureworks.com/cyber-threat-intelligence/threats/secrets-of-the-comfoo-masters/
#
# copyright 2013 QAR, LLC
#-----------------------------------------------------------
package comfoo;
use strict;
my %config = (hive => "System",
hasShortDescr => 1,
hasDescr => 0,
hasRefs => 0,
osmask => 22,
category => "malware",
version => 20131007);
sub getConfig{return %config}
sub getShortDescr {
return "Checks known Comfoo values";
}
sub getDescr{}
sub getRefs {}
sub getHive {return $config{hive};}
sub getVersion {return $config{version};}
my $VERSION = getVersion();
sub pluginmain {
my $class = shift;
my $hive = shift;
::logMsg("Launching comfoo v.".$VERSION);
::rptMsg("comfoo v.".$VERSION);
::rptMsg("(".$config{hive}.") ".getShortDescr()."\n");
my $reg = Parse::Win32Registry->new($hive);
my $root_key = $reg->get_root_key;
# First thing to do is get the ControlSet00x marked current...this is
# going to be used over and over again in plugins that access the system
# file
my ($current,$ccs);
my $key_path = 'Select';
my $key;
if ($key = $root_key->get_subkey($key_path)) {
$current = $key->get_value("Current")->get_data();
$ccs = "ControlSet00".$current;
# Check the services listed in the SecureWorks post/reference
my @svcs = ("NetMan", "SENS", "RasAuto");
my ($cf_path,$cf);
foreach my $s (@svcs) {
$cf_path = $ccs."\\Services\\".$s;
if ($cf = $root_key->get_subkey($cf_path)) {
::rptMsg($cf_path);
::rptMsg("LastWrite Time ".gmtime($cf->get_subkey("Parameters")->get_timestamp())." (UTC)");
# ::rptMsg("");
eval {
my $start = $cf->get_value("Start")->get_data();
if ($start != 0x03 && $s ne "SENS") {
::rptMsg("Start value = ".$start);
::rptMsg("Comfoo malware is known to change the Start value from 3 to 2");
::rptMsg("");
}
};
eval {
my $dllname = $s."\.dll";
$dllname =~ tr/[A-Z]/[a-z]/;
my $dll = $cf->get_subkey("Parameters")->get_value("ServiceDll")->get_data();
::rptMsg("ServiceDll value : ".$dll);
::rptMsg("Should be/include: ".$dllname);
};
}
::rptMsg("");
}
::rptMsg("Analysis Tip: Comfoo malware is known to change the ServiceDll value to point");
::rptMsg("to something other than the normal value");
}
}
1;