During an enterprise Security Operations Center (SOC) investigation, telemetry from various log sources is ingested into a SIEM platform. Match each log snippet on the left with the corresponding event description on the right.
- 192.168.1.50 - - [27/Jul/2026:14:32:10 +0000] "GET /login.php?user=admin' OR '1'='1" 200 4502Web application access log showing an inline SQL injection attempt against an authentication endpoint.
- EventID: 4625, Account Name: jdoe, Failure Reason: Unknown user name or bad password, Logon Type: 3Windows Security log recording a failed network logon attempt.
- Jul 27 14:35:01 fw01 kernel: DROP IN=eth0 OUT= SRC=10.0.0.15 DST=192.168.1.10 PROTO=TCP SPT=49152 DPT=445Perimeter firewall syslog entry depicting blocked traffic destined for Server Message Block (SMB).
- type=SYSCALL arch=c000003e syscall=59 success=yes exit=0 pcomm="nc" exe="/usr/bin/nc"Linux audit daemon log capturing the execution of an outbound netcat process.
Answer
The correct pairings are: HTTP GET log with SQL payload matches the web application SQL injection description; Windows Event ID 4625 matches the failed network logon event; Firewall DROP entry targeting port 445 matches the blocked SMB traffic event; Linux SYSCALL audit log execve matching nc binary matches the executed netcat process description.
Each log entry contains distinctive indicators characteristic of its log source and activity type: HTTP GET request with SQL syntax indicates SQL injection; Windows Event ID 4625 indicates a failed logon; Syslog kernel DROP output targeting port 445 indicates blocked SMB traffic; and Linux auditd syscall 59 referencing /usr/bin/nc indicates netcat process execution.
Step-by-Step Solution
Key Concept
Log Identification and SIEM Telemetry Archetypes