<s>
Brain	B-Application
Test	I-Application
was	O
a	O
piece	O
of	O
malware	O
masquerading	O
as	O
an	O
Android	B-Application
app	O
that	O
tested	O
the	O
users	O
IQ	O
.	O
</s>
<s>
Brain	B-Application
Test	I-Application
was	O
discovered	O
by	O
security	O
firm	O
Check	O
Point	O
and	O
was	O
available	O
in	O
the	B-Application
Google	I-Application
Play	O
app	O
store	O
until	O
15	O
September	O
2015	O
.	O
</s>
<s>
Check	O
Point	O
described	O
Brain	B-Application
Test	I-Application
as	O
"	O
A	O
new	O
level	O
of	O
sophistication	O
in	O
malware	O
"	O
.	O
</s>
<s>
Brain	B-Application
Test	I-Application
was	O
uploaded	O
on	O
two	O
occasions	O
(	O
com.zmhitlte.brain	O
and	O
com.mile.brain	O
)	O
,	O
starting	O
in	O
August	O
2015	O
,	O
both	O
times	O
Google	B-Application
's	I-Application
"	O
Bouncer	O
"	O
failed	O
to	O
detect	O
the	O
malware	O
.	O
</s>
<s>
Tim	O
Erin	O
of	O
Tripwire	O
said	O
the	O
"	O
Bypassing	O
the	O
vetting	O
processes	O
of	O
Apple	O
and	O
Google	B-Application
is	O
the	O
keystone	O
in	O
a	O
mobile	O
malware	O
campaign.	O
"	O
</s>
<s>
The	O
malware	O
is	O
thought	O
to	O
have	O
been	O
written	O
by	O
Chinese	O
actor	O
,	O
according	O
to	O
Shaulov	O
of	O
Check	O
Point	O
,	O
based	O
on	O
the	O
use	O
of	O
a	O
packing/obfuscation	O
tool	O
from	O
Baidu	B-Application
.	O
</s>
<s>
It	O
appears	O
the	O
app	O
was	O
first	O
detected	O
on	O
a	O
Nexus	B-Device
5	I-Device
using	O
Check	O
Point	O
's	O
Mobile	O
Threat	O
Prevention	O
System	O
.	O
</s>
<s>
According	O
to	O
Check	O
Point	O
,	O
it	O
may	O
be	O
necessary	O
to	O
re-flash	O
the	O
ROM	B-Device
on	O
a	O
device	O
if	O
Brain	B-Application
Test	I-Application
has	O
successfully	O
installed	O
a	O
reinstaller	O
in	O
the	O
system	O
directory	O
.	O
</s>
<s>
Evades	O
detection	O
by	O
Google	B-Application
Bouncer	O
by	O
avoiding	O
malicious	O
behavior	O
on	O
Google	B-Application
servers	O
with	O
IP	B-Protocol
addresses	I-Protocol
209.85.128.0	O
–	O
209.85.255.255	O
,	O
216.58.192.0	O
–	O
216.58.223.255	O
,	O
173.194.0.0	O
–	O
173.194.255.255	O
,	O
or	O
74.125.0.0	O
–	O
74.125.255.255	O
,	O
or	O
domain	O
names	O
"	O
google	B-Application
"	O
,	O
"	O
android	B-Application
"	O
or	O
"	O
1e100	O
"	O
.	O
</s>
<s>
Four	O
exploits	O
to	O
gain	O
root	B-Application
access	I-Application
to	O
the	O
system	O
were	O
included	O
,	O
to	O
account	O
for	O
variations	O
in	O
the	O
kernel	O
and	O
drivers	O
of	O
different	O
manufacturers	O
and	O
Android	B-Application
versions	O
,	O
which	O
provide	O
alternative	O
paths	O
to	O
root	O
.	O
</s>
