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Logs for Information Assurance and Forensic Analysis Dr Anton Chuvakin Lecture @ USMA United States Military Academy West Point, NY April 2006
Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Terms and Definitions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Security-Relevant  Log Data Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],What data? From Where?
What Commonly “Gets Logged”? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
“ Standard” Log Messages 10/09/200617:42:57,10.10.94.13,48352,10.10.97.14,909,,,accept,tcp,,,,909,10.10.10.29,,0,,4,3,,' 9Oct2003 17:42:57,accept,truepngfp3,inbound,eth2c0,0,VPN-1 & FireWall-1,product=VPN-1 & FireWall-1[db_tag={0DE0E532-EEA0-11D7-BDFC-927F5D1DECEC};mgmt= truepngfp3;date=1064415722;policy_name= Standard],hfgton,48352,10.10.97.14,909, tcp,10.10.93.145,',eth2c0,inbound Oct 9 16:29:49 [10.10.94.4] Oct 09 2003 16:44:50: %PIX-6-302013: Built outbound TCP connection 2245701 for outside:10.10.98.67/1487 (10.10.98.67/1487) to inside:10.10.94.13/42562 (10.10.93.145/42562) 2006-10-20|15:25:52|dragon-nids|TCP-SCAN|10.10.94.10|10.10.94.13|0|0|X|------S-|0|total=484,min=1,max=1024,up=246,down=237,flags=------S-,Oct20-15:25:34,Oct20-15:25:52| Oct 20 15:35:08 oinker snort: [1:1421:2] SNMP AgentX/tcp request [Classification: Attempted Information Leak] [Priority: 2]: {TCP} 10.10.94.10:43355 -> 10.10.94.13:705 SENSORDATAID="135" SENSORNAME="10.10.94.23:network_sensor_1" ALERTID="QPQVIOAJKBNC6OONK6FTNLLESZ" LOCALTIMEZONEOFFSET="14400" ALERTNAME="pcAnywhere_Probe“ ALERTDATETIME="2003-10-20 19:35:21.0" SRCADDRESSNAME="10.10.94.10" SOURCEPORT="42444" INTRUDERPORT="42444" DESTADDRESSNAME="10.10.94.13" VICTIMPORT="5631" ALERTCOUNT="1" ALERTPRIORITY="3" PRODUCTID="3" PROTOCOLID="6" REASON="RSTsent"
What’s Going On? ,[object Object],[object Object]
Why Analyze? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Log Analysis Basics: How ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Log Analysis Basics:  When ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Example 1 FTP Hack Case ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Log Management Process ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Log Management Challenges ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Monitoring or Ignoring Logs? ,[object Object],[object Object],[object Object]
Monitoring Strategy
Value of Logging and Monitoring ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
“Real-Time” Tasks ,[object Object],[object Object],[object Object],[object Object]
Daily Tasks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Weekly Tasks ,[object Object],[object Object],[object Object],[object Object]
Monthly Tasks ,[object Object],[object Object],[object Object],[object Object]
“On Incident” Tasks ,[object Object],[object Object],[object Object]
Example 2 Scan of the Month Challenge #34 ,[object Object],[object Object],[object Object],[object Object]
Logs in Support of Compliance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Forensics Brief ,[object Object]
So, What is “Log Forensics” ,[object Object],[object Object],[object Object],[object Object]
How Logs Help… Sometimes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Logs Forensics Challenges ,[object Object],[object Object],[object Object],[object Object],[object Object]
Some Future Bits   ,[object Object],[object Object],[object Object],[object Object],[object Object]
Example 3 Spyware Alert ,[object Object],[object Object],[object Object]
Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Thank you! Q&A? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Logs for Information Assurance and Forensics @ USMA

  • 1. Logs for Information Assurance and Forensic Analysis Dr Anton Chuvakin Lecture @ USMA United States Military Academy West Point, NY April 2006
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  • 6. “ Standard” Log Messages 10/09/200617:42:57,10.10.94.13,48352,10.10.97.14,909,,,accept,tcp,,,,909,10.10.10.29,,0,,4,3,,' 9Oct2003 17:42:57,accept,truepngfp3,inbound,eth2c0,0,VPN-1 & FireWall-1,product=VPN-1 & FireWall-1[db_tag={0DE0E532-EEA0-11D7-BDFC-927F5D1DECEC};mgmt= truepngfp3;date=1064415722;policy_name= Standard],hfgton,48352,10.10.97.14,909, tcp,10.10.93.145,',eth2c0,inbound Oct 9 16:29:49 [10.10.94.4] Oct 09 2003 16:44:50: %PIX-6-302013: Built outbound TCP connection 2245701 for outside:10.10.98.67/1487 (10.10.98.67/1487) to inside:10.10.94.13/42562 (10.10.93.145/42562) 2006-10-20|15:25:52|dragon-nids|TCP-SCAN|10.10.94.10|10.10.94.13|0|0|X|------S-|0|total=484,min=1,max=1024,up=246,down=237,flags=------S-,Oct20-15:25:34,Oct20-15:25:52| Oct 20 15:35:08 oinker snort: [1:1421:2] SNMP AgentX/tcp request [Classification: Attempted Information Leak] [Priority: 2]: {TCP} 10.10.94.10:43355 -> 10.10.94.13:705 SENSORDATAID="135" SENSORNAME="10.10.94.23:network_sensor_1" ALERTID="QPQVIOAJKBNC6OONK6FTNLLESZ" LOCALTIMEZONEOFFSET="14400" ALERTNAME="pcAnywhere_Probe“ ALERTDATETIME="2003-10-20 19:35:21.0" SRCADDRESSNAME="10.10.94.10" SOURCEPORT="42444" INTRUDERPORT="42444" DESTADDRESSNAME="10.10.94.13" VICTIMPORT="5631" ALERTCOUNT="1" ALERTPRIORITY="3" PRODUCTID="3" PROTOCOLID="6" REASON="RSTsent"
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Notas do Editor

  1. Abstract The presentation will cover the use of various systems and network logs and audit trails in the incident response and forensics processes. It will describe both a methodology for log collection and analysis as well as practical case studies and tools. Logs often will provide most of the answers needed for the investigators without diving deeply into expensive disk image forensics. Being able to rely on logs by making sure that they are collected and available for analysis is invaluable during the investigation. – It will also touch upon preserving log evidence integrity and possible challenges to such integrity.