Linux 应急响应

#!/usr/bin/python# -*- coding: utf-8 -*-
import osimport sysimport re
TRUST_USER = ['root','piaox']TRUST_IP =['10.0.211.71']FILE_PATH=['/var/www/html','/tmp','/var/tmp','/home']FILE_LIST =[]ACCESS_LOG = '/var/log/httpd/access_log'php_Features_list = ['($_(?:GET|POST|REQUEST)[.*?](s|n)*((s|n)*$_(?:GET|POST|REQUEST)[.*?](s|n)*))','(?:base64_decode)(['"][w+/=]{200,}['"])','function_existss*(s*['"](popen|exec|proc_open|system|passthru)+['"]s*)','@?(eval_?r?|assert|include|require|include_once|require_once|array_map|array_walk)+s*(s*$_(GET|POST|REQUEST|COOKIE|SERVER|SESSION)+[?(.*)]?s*)','evals*(s*(s*$$(w+)','($[w_]{0,15}(s|n)*((s|n)*$_(?:POST|GET|REQUEST)[.*?](s|n)*))','(ReDuh|silic)','(?:call_user_func)(s|n)*(.{0,15}$_(?:GET|POST|REQUEST)','(?:wscript).(?:shell)','(?:cmd).(?:exe)','(?:shell).(?:application)','(?:documents)s+(?:and)s+(?:settings)','(?:system32)','(?:serv-u)','(?:phpspy)','(?:webshell)','(?:Program)s+(?:Files)','(?:include|require)(?:_once)?s*["']?(?s*$?w+["']?)?s*;?','ec38fe2a8497e0a8d6d349b3533038cb|88f078ec861a3e4baeb858e1b4308ef0|7Zt/TBNnGMfflrqBFnaes|\x50\x4b\x05\x06\x00\x00\x00\x00|9c3a9720372fdfac053882f578e65846|silic1234','((udp|tcp)://(.*);)+','preg_replaces*((.*)/e(.*),s*$_[?(.*)]?,(.*))','preg_replaces*((.*)(base64_decode($','.*?$_w+.*?@?preg_replace(("|').*?/e("|'),.*?,.*?)','(eval|assert|include|require|include_once|require_once)+s*(s*(base64_decode|str_rot13|gz(w+)|file_(w+)_contents|(.*)php://input)+','(include|require|include_once|require_once)+s*(s*['"](w+).(jpg|gif|ico|bmp|png|txt|zip|rar|htm|css|js)+['"]s*)','$_(w+)s*=?s*(eval|assert|include|require|include_once|require_once)+s*(s*$(w+)s*)','(s*$_FILES[(.*)][(.*)]s*,s*$_(GET|POST|REQUEST|FILES)+[(.*)][(.*)]s*)','(fopen|fwrite|fputs|file_put_contents)+s*((.*)$_(GET|POST|REQUEST|COOKIE|SERVER)+[(.*)](.*))','(fopen|fwrite|fputs|file_put_contents)+s*($_(GET|POST|REQUEST|COOKIE|SERVER)+[(.*)](.*))','echos*curl_execs*(s*$(w+)s*)','new coms*(s*['"]shell(.*)['"]s*)','$(.*)s*((.*)/e(.*),s*$_(.*),(.*))','$_=(.*)$_','$_(GET|POST|REQUEST|COOKIE|SERVER)+[(.*)](s*$(.*))','$(w+)s*(s*$_(GET|POST|REQUEST|COOKIE|SERVER)+[(.*)]s*)','$(w+)s*(s*${(.*)}','$(w+)s*(s*chr(d+)','$w*s*=s*$_(GET|POST|REQUEST|COOKIE|SERVER|SESSION)[.*?];s*includes+(s*$(.*?)s*);','$w+s*=s*$_w+[.*?];s*@eval(.*?)','$w+s*=s*base64_decode($_w+[(.*?)]);s*@eval(.*?)','$_w+[.*?]s*(s*$_w+[.*?]s*);','($_=@$_w+[.*?]s*).@$_($_w+[.*?]s*)','$_w+[.*?]s*(s*$_w+[.*?]s*,$_w+[.*?])','${'_'.$_}['_'](${'_'.$_}['__']);','__angel_1111111111_eof__','xx.php?pwd=e','687474703a2f2f377368656c6c2e676f6f676c65636f64652e636f6d2f73766e2f6d616b652e6a7067','Changed by pnkoo.cn|Jakub Vrana|blackbap.org|Code By isosky|16jTwyAtIHBocCZNeVNRTMr9vt2/4rG4t925pL7fIC0g']
asp_Features_list = ['(?:eval|execute)(s|n)*(?:request)(s|n)*((s|n)*(.*?)(s|n)*)','(?:eval)(s|n)*((s|n)*(?:Request)(s|n)*.(s|n)*(?:Item)(s|n)*[(s|n)*(.*?)(s|n)*]','(?:ExecuteStatement)(.*?request','FromBase64String("UmVxdWVzdC5JdGVtWyJ6Il0=")','tseuqers*lave.*','Request.form(.*)eval(.*)','<SCRIPTs*RUNAT=SERVERs*LANGUAGE=JAVASCRIPT>(.*)eval','reDuh(.*)','PublicKeyToken=B03F5F7F11D50A3A','20132165414621325641311254123112512','#@~^oHMBAA==@#@&@#@&"+kwW','(Client/Login.xml?Command=Login&Sync=1227081437828)|(因为serv-u的userid变化我搞不懂)','aspmuma|(免杀去后门版s*bys*UnKnown)','芝麻开门|F4ck|1c1f81a8b0a630f530f52fa9aa9dda1b|法客论坛|F4ckTeam','silicname|silicpass|命令行执行','server.mappath("go.asp")','MSSQL语句执行工具','gif89a(s|n)*<%@?','UJ@!z(G9X@*@!z4Y:^@*ryglpAA==^#~@','clsid:72C24DD5-D70A-438B-8A42-98424B88AFB8','WebSniff(.*?)Powereds*by','11.asp','mssql导库|闪电小子|_tysan|MYSQL Manager','#@~^bGsBAA==@#@&AC13`DV{J@!8D@*@!8D@*@!^n']
jsp_Features_list = ['reDuh','没有权限执行该操作','(chopper|QQ(cs,z1,z2,sb)|caicaihk|Alanwalker|(bys*n1nty)|(Codes*Bys*Ninty)|JspSpyPwd|JspSpy|6625108|(charless*QQs*77707777))','((21,25,80,110,1433,1723,3306,3389,4899,5631,43958,65500)|(192.168.230.1s*4444))','1decc1ce886d1b2f9f91ecb39967832d05f8e8b8','JFolder.jsp|Stevens*Cee|JFileMan.jsp|hack520s*by|mailto:[email protected]|bys*Bagheera|luoluonet|Recodings*bys*Juliet|lovehacker|webshell.jsp|Hacker|jsps*Files*Browser|jshell|ceshi2009']
other_Features_list = ['System32\cmd.exe|cmd|CFMs*shell','俺的门门','Gamma Web Shell']
attack__Features_list = {"../":"目录穿越攻击","select.+(from|limit)":"SQL注入攻击","(?:(union(.*?)select))":"SQL注入攻击","having|rongjitest":"SQL注入攻击","sleep((s*)(d*)(s*))":"SQL注入攻击","benchmark((.*),(.*))":"SQL注入攻击","base64_decode(":"SQL注入攻击","(?:fromW+information_schemaW)":"SQL注入攻击","(?:(?:current_)user|database|schema|connection_id)s*(":"SQL注入攻击","(?:etc/W*passwd)":"敏感文件操作","into(s+)+(?:dump|out)files*":"SQL注入攻击","groups+by.+(":"SQL注入攻击","xwork.MethodAccessor":"命令注入攻击","xwork.MethodAccessor":"命令注入攻击","(gopher|doc|php|glob|file|phar|zlib|ftp|ldap|dict|ogg|data):/":"敏感文件操作","<(iframe|script|body|img|layer|div|meta|style|base|object|input)":"XSS跨站脚本","(alert|confirm|prompt)":"XSS跨站脚本","(onmouseover|onerror|onload)=":"XSS跨站脚本","java.lang":"命令注入攻击",".(svn|htaccess|bash_history)":"敏感文件访问",".(bak|inc|old|mdb|sql|backup|java|class)$":"敏感文件访问","(vhost|bbs|host|wwwroot|www|site|root|hytop|flashfxp).*.rar":"敏感文件访问","(phpmyadmin|jmx-console|jmxinvokerservlet)":"管理控制台探测行为","/(attachments|upimg|images|css|uploadfiles|html|uploads|templets|static|template|data|inc|forumdata|upload|includes|cache|avatar)/(\w+).(php|jsp)":"敏感文件访问","(HTTrack|harvest|audit|dirbuster|pangolin|nmap|sqln|-scan|hydra|Parser|libwww|BBBike|sqlmap|w3af|owasp|Nikto|fimap|havij|PycURL|zmeu|BabyKrokodil|netsparker|httperf|bench| SF/)":"Web扫描器扫描"}
def Un_worktime_login(localday):if os.popen("last |grep -v 'reboot' |grep " + "'" + localday.strip() + "'" + "|awk '($7>="12:00" && $7<="14:00") || ($7>="00:00" && $7<="06:00")'").readlines():print '[+] Un_worktime_login ------------------------------------ [ DONE ]'for bb in os.popen("last |grep -v 'reboot' |grep " + "'" + localday.strip() + "'" + "|awk '($7>="12:00" && $7<="14:00") || ($7>="00:00" && $7<="06:00")'").readlines():print bb.strip()return Trueelse:return False
def Faild_user(localday):print 'n[+] Faild_user ------------------------------------ [ DONE ]'os.system("egrep '(new user: name=)|(Failed password for)' /var/log/secure*|grep " + "'" + localday + "'")
def Un_trust_user():all_user = os.popen("grep '/bin/bash' /etc/passwd | awk -F ':' '{print $1}'").readlines()print 'n[+] Un_trust_user ------------------------------------ [ DONE ]'for l in all_user:if l.strip() not in TRUST_USER:os.system("grep "+l.strip()+" /etc/passwd")
def Dubious_netstat():print 'n[+] Dubious_netstat ------------------------------------ [ DONE ]'for ip in TRUST_IP:os.system("netstat -antp|egrep -v ':::*' |egrep 'ESTABLISHED|LISTEN'|awk '$5 !~ /"+ip.strip()+"/' | awk '$5 ~/:(21|22|443|80|8080|7001|8443|9080)$/{print}'")
def Dubious_files(filepath):for f in os.listdir(filepath):path = os.path.join(filepath, f)if os.path.isfile(path):FILE_LIST.append(path)if os.path.isdir(path):Dubious_files(path)
def Webshell_detect(filename,rulename):f1 = open(filename).read()for rule in rulename:result = re.compile(rule).findall(f1)if result:print "============================================"print 'Risk file:' + filenameprint 'Risk code：' + str(result[0])os.system("stat " +str(filename)+ " |grep 'Modify'")
def Attack_analysis():f2 = open(ACCESS_LOG).readlines()print "n[+] Attack_analysis ------------------------------------ [ DONE ]"for line in f2:for r in attack__Features_list:result = re.compile(r).findall(line)if result:print '匹配特征：' + '[' + str(result[0]) + ']' + '===>' + line.strip()print '攻击类型:' + '[' + attack__Features_list[r] + ']'
if __name__=='__main__':localday = os.popen("env LANG=en_US.UTF-8 date |awk '{print $2,$3}'").readline().strip()Un_worktime_login(localday)Faild_user(localday)Un_trust_user()Dubious_netstat()for file in FILE_PATH:Dubious_files(file.strip())print 'n[+] Webshell_detect ------------------------------------ [ DONE ]'for f in FILE_LIST:if str(f).lower().endswith(".php"):Webshell_detect(f, php_Features_list)elif str(f).lower().endswith(".jsp"):Webshell_detect(f, jsp_Features_list)elif str(f).lower().endswith(".aspx"):Webshell_detect(f, asp_Features_list)Attack_analysis()

原文链接：https://github.com/wpsec/Emergency-response-notes/blob/main/Linux-%E5%BA%94%E6%80%A5%E5%93%8D%E5%BA%94.md