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CuckooFeatures.py
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import os, json
from time import sleep
from os import system
import math
import copy
os.chdir("/home/sahil/Downloads/cuckoo/")
def getListOfFiles(dirName):
#dirName = "/home/sahil/Downloads/cuckoo/"
# create a list of file and sub directories
# names in the given directory
listOfFile = os.listdir(dirName)
allFiles = list()
# Iterate over all the entries
for entry in listOfFile:
# Create full path
fullPath = os.path.join(dirName, entry)
# If entry is a directory then get the list of files in this directory
if os.path.isdir(fullPath):
allFiles = allFiles + getListOfFiles(fullPath)
else:
if fullPath.endswith("ort.json"):
allFiles.append(fullPath)
return allFiles
def collectapis(input_json):
apis = {}
try:
apistats = input_json['behavior']['apistats']
for procid, dic in apistats.items():
for k,v in dic.items():
apis[k] = v
except:
return apis
return apis
def collectmodeules(input_json):
modules = {}
try:
procs = input_json['behavior']['processes']
for proc in procs:
for k,v in proc.items():
for i in proc['modules']:
for key, val in i.items():
if key == 'basename':
module = val.split("\\")[-1]
if module not in modules.keys():
modules[module] = 1
else:
modules[module] += 1
except:
return
return modules
def collectreg(input_json):
regesteries = {}
try:
regs = input_json['behavior']['summary']['regkey_opened'] + \
input_json['behavior']['summary']['regkey_written'] + \
input_json['behavior']['summary']['regkey_read']
for reg in regs:
r = reg.split("\\")[-1]
if r not in regesteries.keys():
regesteries[r] = 1
else:
regesteries[r] += 1
except:
return regesteries
return regesteries
def collectmutexes(input_json):
mutexes = {}
try:
muts = input_json['behavior']['summary']['mutex']
for mut in muts:
if mut not in mutexes.keys():
mutexes[mut] = 1
else:
mutexes[mut] += 1
except:
return mutexes
return mutexes
def collectstrings(input_json):
strings = {}
try:
for st in input_json['strings']:
if st not in strings.keys():
strings[st] = 1
else:
strings[st] += 1
except:
return strings
return strings
def mergedic(d1, d2):
d3 = {}
for k,v in d1.items():
d3[k] = v
for k,v in d2.items():
d3[k] = v
return d3
def collectprivs(input_json):
privs = {}
l = []
for i in input_json['memory']['privs']['data']:
#st = str(i['filename']) + " : " +
st = str(i['description'])
if st in privs.keys():
privs[st] += 1
else:
privs[st] = 1
return privs
def calculatetf(beh, aall):
finalTF = {}
for fil,li in beh.items():
types = []
for feature in li:
tot = sum(feature.values())
TF = {}
for name,freq in feature.items():
tf = freq/tot
TF[name] = tf
types.append(TF)
finalTF[fil] = types
for li in range(len(aall)):
for i in aall[li]:
for fil in finalTF.keys():
if i not in finalTF[fil][li].keys():
finalTF[fil][li][i] = 0
return finalTF
def calculatetfidf(beh, aall, tf):
finalTFIDF = {}
idf = {}
for j in aall:
for i in j:
idf[i] = 0
N = len(beh.keys())
for fil,li in beh.items():
for i in li:
for j in i.keys():
idf[j] += 1
for fil,li in beh.items():
types = []
for i in range(len(aall)):
tfidf = {}
for j in aall[i]:
tfidf[j] = tf[fil][i][j] * math.log( 1 + N/idf[j],10)
types.append(tfidf)
finalTFIDF[fil] = types
return finalTFIDF
def filterfeatures(beh, aall):
idf = {}
for i in aall:
idf[i] = 0
#N = len(beh.keys())
for i in aall:
for fil,li in beh.items():
for l in li:
if i in l.keys():
idf[i] += 1
d = [ k for k,v in idf.items() if v > 1 ]
return d
def filterstring(st):
st = st.replace(",","")
st = st.replace("[","")
st = st.replace("]","")
st = st.replace("'","")
return st
def printarff(tf,tfidf):
fi = open("ASTFeatures.arff","w")
fi.write("@relation test\n")
header = "@attribute instanceID_original {"
for i in tf.keys():
header = header + i.split("/")[-3] + ","
header = header[0:len(header)-1] + "}"
count = 0
fi.write(header + "\n")
for fil, li in tf.items():
print(tf[fil][1])
for i in range(len(li)):
for k,v in li[i].items():
k = filterstring(k)
if i == 0:
str1 = "@attribute \'apiTF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
elif i == 1:
str1 = "@attribute \'modulesTF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
elif i == 2:
str1 = "@attribute \'mutexesTF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
elif i == 3:
str1 = "@attribute \'regsTF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
elif i == 4:
str1 = "@attribute \'stringsTF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
elif i == 5:
str1 = "@attribute \'privsTF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
count += 1
break
count = 0
for fil, li in tf.items():
for i in range(len(li)):
for k,v in li[i].items():
k = filterstring(k)
if i == 0:
str1 = "@attribute \'apiTFIDF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
elif i == 1:
str1 = "@attribute \'modulesTFIDF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
elif i == 2:
str1 = "@attribute \'mutexesTFIDF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
elif i == 3:
str1 = "@attribute \'regsTFIDF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
elif i == 4:
str1 = "@attribute \'stringsTFIDF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
elif i == 5:
str1 = "@attribute \'privsTFIDF {}=[{}]\'".format(count,k) + " numeric" + "\n"
fi.write(str1)
count +=1
break
footer = ""
for f in tf.keys():
footer = footer + f.split("/")[-4].replace(" ","") + ","
footer = footer[0:len(footer)-1]
footer = ",".join(list(set(footer.split(","))))
footer = "@attribute 'authorName_original' {" + footer + "}"
fi.write(footer)
fi.write("\n@data\n")
for fil, li in tf.items():
st = fil.split("/")[-3] + ","
for i in range(len(li)):
for k,v in li[i].items():
st = st + repr(v) + ","
for i in range(len(li)):
for k,v in tfidf[fil][i].items():
st = st + repr(v) + ","
st = st + fil.split("/")[-4].replace(" ","")+"\n"
fi.write(st)
if __name__=="__main__":
exists = os.path.isfile('./ASTFeatures.arff')
if exists:
os.remove('./ASTFeatures.arff')
dirName = "/home/sahil/Downloads/cuckoo/"
reports = getListOfFiles(dirName)
filenames= {}
reportdic = {}
allapis = []
allmodules = []
allregs = []
allmutexes = []
allprivs = []
allstrings = []
behaviour = {}
for rep in reports:
try:
results = {}
jsonfile = open(rep, "r")
data = json.load(jsonfile)
apis = collectapis(data)
allapis = list(set(apis.keys())) + allapis
modules = collectmodeules(data)
allmodules = list(set(modules.keys())) + allmodules
mutexes = collectmutexes(data)
allmutexes = list(set(mutexes.keys())) + allmutexes
regs = collectreg(data)
allregs = list(set(regs.keys())) + allregs
strings = collectstrings(data)
allstrings = list(set(strings.keys())) + allstrings
privs = collectprivs(data)
allprivs = list(set(privs.keys())) + allprivs
behaviour[rep] = [apis,modules,mutexes,regs,strings,privs]
except Exception as e:
print(e)
#print(behaviour.keys())i
allapis = filterfeatures(behaviour, allapis)
allmodules = filterfeatures(behaviour, allmodules)
allmutexes = filterfeatures(behaviour,allmutexes)
allregs = filterfeatures(behaviour, allregs)
allstrings = filterfeatures(behaviour, allstrings)
allprivs = filterfeatures(behaviour, allprivs)
aall = allapis + allmodules + allmutexes + allregs + allstrings + allprivs
#fltering the keys in the filtered list of features
for fil, li in behaviour.items():
for i in range(len(li)):
d = copy.deepcopy(li[i])
for k,v in d.items():
if k not in aall:
del behaviour[fil][i][k]
aall = [allapis,allmodules,allmutexes,allregs,allstrings,allprivs]
tf = calculatetf(behaviour, aall)
tfidf = calculatetfidf(behaviour, aall, tf)
printarff(tf,tfidf)