<s>
Shedun	B-Application
is	O
a	O
family	O
of	O
malware	O
software	O
(	O
also	O
known	O
as	O
Kemoge	O
,	O
Shiftybug	O
and	O
Shuanet	O
)	O
targeting	O
the	O
Android	B-Application
operating	I-Application
system	I-Application
first	O
identified	O
in	O
late	O
2015	O
by	O
mobile	O
security	O
company	O
Lookout	O
,	O
affecting	O
roughly	O
20,000	O
popular	O
Android	B-Application
applications	I-Application
.	O
</s>
<s>
Lookout	O
claimed	O
the	O
HummingBad	O
malware	O
was	O
also	O
a	O
part	O
of	O
the	O
Shedun	B-Application
family	O
,	O
however	O
,	O
these	O
claims	O
were	O
refuted	O
.	O
</s>
<s>
Avira	B-Application
Protection	O
Labs	O
stated	O
that	O
Shedun	B-Application
family	O
malware	O
is	O
detected	O
to	O
cause	O
approximately	O
1500-2000	O
infections	O
per	O
day	O
.	O
</s>
<s>
The	O
malware	O
's	O
primary	O
attack	O
vector	O
is	O
repackaging	O
legitimate	O
Android	B-Application
applications	I-Application
(	O
e.g.	O
</s>
<s>
Facebook	O
,	O
Twitter	B-Application
,	O
WhatsApp	B-Application
,	O
Candy	O
Crush	O
,	O
Google	O
Now	O
,	O
Snapchat	O
)	O
with	O
adware	O
included	O
.	O
</s>
<s>
The	O
app	O
which	O
remains	O
functional	O
is	O
then	O
released	O
to	O
a	O
third	O
party	O
app	O
store	O
;	O
once	O
downloaded	O
,	O
the	O
application	O
generates	O
revenue	O
by	O
serving	O
ads	O
(	O
estimated	O
to	O
amount	O
to	O
$2	O
US	O
per	O
installation	O
)	O
,	O
most	O
users	O
cannot	O
get	O
rid	O
of	O
the	O
virus	O
without	O
getting	O
a	O
new	O
device	O
,	O
as	O
the	O
only	O
other	O
way	O
to	O
get	O
rid	O
of	O
the	O
malware	O
is	O
to	O
root	B-Application
affected	O
devices	O
and	O
re-flash	O
a	O
custom	B-Application
ROM	I-Application
.	O
</s>
<s>
In	O
addition	O
,	O
Shedun-type	O
malware	O
has	O
been	O
detected	O
pre-installed	O
on	O
26	O
different	O
types	O
of	O
Chinese	O
Android-based	O
hardware	O
such	O
as	O
Smartphones	B-Application
and	O
Tablet	B-Device
computers	I-Device
.	O
</s>
<s>
Shedun-family	O
malware	O
is	O
known	O
for	O
auto-rooting	O
the	O
Android	O
OS	O
using	O
well-known	O
exploits	O
like	O
ExynosAbuse	O
,	O
Memexploit	O
and	O
Framaroot	O
(	O
causing	O
a	O
potential	O
privilege	O
escalation	O
)	O
and	O
for	O
serving	O
trojanized	O
adware	O
and	O
installing	O
themselves	O
within	O
the	O
system	B-Application
partition	I-Application
of	O
the	O
operating	B-General_Concept
system	I-General_Concept
,	O
so	O
that	O
not	O
even	O
a	O
factory	B-General_Concept
reset	I-General_Concept
can	O
remove	O
the	O
malware	O
from	O
infected	O
devices	O
.	O
</s>
<s>
Shedun	B-Application
malware	O
is	O
known	O
for	O
targeting	O
the	O
Android	B-Application
Accessibility	O
Service	O
,	O
as	O
well	O
as	O
for	O
downloading	O
and	O
installing	O
arbitrary	O
applications	O
(	O
usually	O
adware	O
)	O
without	O
permission	O
.	O
</s>
<s>
It	O
is	O
classified	O
as	O
"	O
aggressive	O
adware	O
"	O
for	O
installing	O
potentially	B-Application
unwanted	I-Application
program	I-Application
applications	O
and	O
serving	O
ads	O
.	O
</s>
<s>
As	O
of	O
April	O
2016	O
,	O
Shedun	B-Application
malware	O
is	O
considered	O
by	O
most	O
security	O
researchers	O
to	O
be	O
next	O
to	O
impossible	O
to	O
entirely	O
remove	O
.	O
</s>
<s>
Avira	B-Application
Security	O
researcher	O
Pavel	O
Ponomariov	O
,	O
who	O
specializes	O
in	O
Android	B-Application
malware	O
detection	O
tools	O
,	O
mobile	O
threat	O
detection	O
,	O
and	O
mobile	O
malware	O
detection	O
automation	O
research	O
,	O
has	O
published	O
an	O
in-depth	O
analysis	O
of	O
this	O
malware	O
.	O
</s>
