如何通过分析Web服务器记录查找黑客攻击的踪迹?(3) 12:07:56 10.22.1.81 HEAD /scripts/samples/ctguestb.idc 200 12:07:56 10.22.1.81 GET /scripts/samples/ctguestb.idc 200 12:07:56 10.22.1.81 HEAD /scripts/tools/newdsn.exe 404 12:07:56 10.22.1.81 HEAD /msadc/msadCS.dll 200 12:07:56 10.22.1.81 GET /scripts/iisadmin/bdir.htr 200 12:07:56 10.22.1.81 HEAD /carbo.dll 404 12:07:56 10.22.1.81 HEAD /scripts/proxy/ 403 12:07:56 10.22.1.81 HEAD /scripts/proxy/w3proxy.dll 500 12:07:56 10.22.1.81 GET /scripts/proxy/w3proxy.dll 500 Apache 10.22.1.80-[08/Oct/2002:12:57:28 -0700] "GET /cfcache.map HTTP/1.0" 404 266 10.22.1.80-[08/Oct/2002:12:57:28 -0700] "GET /cfide/Administrator/startstop.html HTTP/1.0" 404 289 10.22.1.80-[08/Oct/2002:12:57:28 -0700] "GET /cfappman/index.cfm HTTP/1.0" 404 273 10.22.1.80-[08/Oct/2002:12:57:28 -0700] "GET /cgi-bin/ HTTP/1.0" 403 267 10.22.1.80-[08/Oct/2002:12:57:29 -0700] "GET /cgi-bin/dbmlparser.exe HTTP/1.0" 404 277 10.22.1.80-[08/Oct/2002:12:57:29 -0700] "HEAD /_vti_inf.html HTTP/1.0" 404 0 10.22.1.80-[08/Oct/2002:12:57:29 -0700] "HEAD /_vti_pvt/ HTTP/1.0" 404 0 10.22.1.80-[08/Oct/2002:12:57:29 -0700] "HEAD /cgi-bin/webdist.cgi HTTP/1.0" 404 0 10.22.1.80-[08/Oct/2002:12:57:29 -0700] "HEAD /cgi-bin/handler HTTP/1.0" 404 0 10.22.1.80-[08/Oct/2002:12:57:29 -0700] "HEAD /cgi-bin/wrap HTTP/1.0" 404 0 10.22.1.80-[08/Oct/2002:12:57:29 -0700] "HEAD /cgi-bin/pfdisplay.cgi HTTP/1.0" 404 检查这种攻击的关键是看同一IP地址对cgi目录(IIS是scripts,Apache是cgi-bin)文件请求出现多个404状态。这时就要检查相应cgi目录里的程序安全性。 5、远程攻击 下面我们以针对IIS的MDAC攻击为例,来了解远程攻击在log里的记录情况。MDAC漏洞使得攻击者可以在Web服务器端执行任何命令。 17:48:49 10.22.1.80 GET /msadc/msadcs.dll 200 17:48:51 10.22.1.80 POST /msadc/msadcs.dll 200 当攻击发生后,在log会留下对msadcs.dll请求的记录。 另一个有名的攻击是asp源代码泄漏的漏洞,当这种攻击发生时,log文件会有如下记录: 17:50:13 10.22.1.81 GET /default.asp+.htr 200