Question Analysis

An attacker on a Linux host may try to enumerate installed shells by reading the system file that lists valid shells. Using process or syslog data, determine which command was executed to perform this enumeration.

bf23c7dc-1004-4949-8262-4c1d1ef87702
Question ID
14/16
Models Correct
1
Valid Answer
88%
Success Rate
Reference Answer

Human-validated correct answer for this question

cat /etc/shells
Model Performance Comparison

See how different AI models performed on this question

ModelAnswerKQL QueryStatusAttemptsTimeCost
gemini-2.5-flash-preview-04-17
No answer provided
No query generated
Correct
5
0.00s
0.0363
gpt-35-turbo
cat
DeviceProcessEvents | where ProcessCommandLine contains 'cat /etc/shells' or ProcessCommandLine contains 'less /etc/shells' or ProcessCommandLine contains 'more /etc/shells'
Incorrect
1
3.47s
0.0042
gpt-4-turbo-2024-04-09
No answer provided
No query generated
Incorrect
5
0.00s
0.2278
gpt-4.1
cat /etc/shells
DeviceProcessEvents | where ProcessCommandLine has "/etc/shells" | project TimeGenerated, DeviceName, AccountName, FileName, ProcessCommandLine, InitiatingProcessAccountName, InitiatingProcessCommandLine
Correct
1
7.90s
0.0115
gpt-4.1-finetuned
cat /etc/shells
DeviceProcessEvents | where AccountDomain != "" | where AccountName != "" //Detect direct `/bin/sh /etc/shells` and similar, or indirect `/etc/shells |awk -F: '/bin/{print $1}'` and similar | where (ProcessCommandLine in~ ("cat /etc/shells", "more /etc/shells", "less /etc/shells", "tail /etc/shells", "head /etc/shells", "awk -F: '/bin/{print $1}' /etc/shells", "/etc/shells |awk -F: '/bin/{print $1}'", "/etc/shells |awk -F:' '{print $1}'", "/bin/{print ", "|awk -F: '/bin/'") and ProcessCommandLine contains "/etc/shells") or (ProcessCommandLine has "/etc/shells" and InitiatingProcessFileName == "/bin/sh" ) //Raise if OS identified as Linux. | summarize count() by bin(TimeGenerated, 1h), AccountName, InitiatingProcessAccountSid, InitiatingProcessCommandLine, InitiatingProcessFileName, DeviceName, InitiatingProcessId, ProcessCommandLine,ProcessId, Type, InitiatingProcessParentFileName | extend timestamp = bin(TimeGenerated, 1h) | extend Account_0_Name = AccountName | extend Account_0_Sid = InitiatingProcessAccountSid | extend Host_0_HostName = DeviceName | extend Process_0_ProcessId = ProcessId | extend Process_0_CommandLine = InitiatingProcessCommandLine | extend Process_1_ProcessId = InitiatingProcessId | extend Process_1_ProcessId = ProcessId | extend Process_1_CommandLine = ProcessCommandLine | extend Process_0_FileName = InitiatingProcessParentFileName | extend Type = strcat(Type, "_" , InitiatingProcessParentFileName)
Correct
2
25.41s
0.0258
gpt-4.1-mini
cat /etc/shells
DeviceProcessEvents | where ProcessCommandLine contains "/etc/shells" or FileName contains "etc/shells" | project DeviceName, AccountName, ProcessCommandLine, TimeGenerated | sort by TimeGenerated desc
Correct
1
28.28s
0.0022
gpt-4.1-nano
cat /etc/shells
DeviceProcessEvents | where ProcessCommandLine has_any ('cat', 'less', 'more', 'head') | where ProcessCommandLine contains '/etc/shells' | project TimeGenerated, DeviceName, ProcessCommandLine
Correct
2
5.52s
0.0010
gpt-4o
cat /etc/shells
let suspicious_file="/etc/shells"; DeviceProcessEvents | where ProcessCommandLine has suspicious_file or InitiatingProcessCommandLine has suspicious_file | project TimeGenerated, DeviceId, DeviceName, AccountName, InitiatingProcessCommandLine, InitiatingProcessCreationTime
Correct
2
28.09s
0.0289
grok-3-beta
cat /etc/shells
DeviceProcessEvents | where ProcessCommandLine has '/etc/shells' or ProcessCommandLine has 'cat /etc/shells' or ProcessCommandLine has 'more /etc/shells' or ProcessCommandLine has 'less /etc/shells' or ProcessCommandLine has 'nano /etc/shells' or ProcessCommandLine has 'vim /etc/shells' or ProcessCommandLine has 'vi /etc/shells' | join kind=inner ( DeviceInfo | where OSPlatform has 'Linux' or OSDistribution has 'Linux' ) on DeviceId | project TimeGenerated, DeviceName, ProcessCommandLine, AccountName, InitiatingProcessAccountName, InitiatingProcessCommandLine | order by TimeGenerated desc
Correct
3
40.73s
0.0617
grok-3-mini-beta
cat /etc/shells
DeviceProcessEvents | where ProcessCommandLine contains '/etc/shells' | project TimeGenerated, DeviceName, AccountName, ProcessCommandLine | order by TimeGenerated desc
Correct
1
15.66s
0.0016
o1-high
cat
DeviceProcessEvents | join kind=inner ( DeviceInfo | where OSPlatform == "Linux" ) on DeviceId | where ProcessCommandLine has "/etc/shells" | project TimeGenerated, DeviceName, AccountName, ProcessCommandLine
Correct
2
73.09s
0.3824
o1-low
cat
DeviceInfo | where OSPlatform == "Linux" | join ( DeviceProcessEvents | where ProcessCommandLine has "/etc/shells" ) on DeviceId | project TimeGenerated, DeviceName, AccountName, ProcessCommandLine, InitiatingProcessCommandLine | order by TimeGenerated desc
Correct
1
30.13s
0.2281
o3-mini-high
cat
union DeviceProcessEvents, DeviceEvents | where tolower(InitiatingProcessCommandLine) has "/etc/shells" | project TimeGenerated, DeviceName, InitiatingProcessFileName, InitiatingProcessCommandLine, ActionType, DeviceId | sort by TimeGenerated desc
Correct
1
11.48s
0.0113
o3-mini-low
cat
DeviceProcessEvents | where InitiatingProcessCommandLine contains "/etc/shells" | project TimeGenerated, DeviceName, InitiatingProcessCommandLine, FileName, FolderPath | sort by TimeGenerated desc
Correct
1
31.35s
0.0113
o4-mini-high
cat /etc/shells
let ShellProcessEvents = DeviceProcessEvents | where ProcessCommandLine matches regex @"\b(cat|grep|awk|sed|less|more|tail|head)\b.*\/etc\/shells" | project TimeGenerated, DeviceName, AccountName=InitiatingProcessAccountName, CommandLine=ProcessCommandLine; // If syslog data is available, look for raw slash etc shells reads in logs let ShellSyslogEvents = Syslog | where SyslogMessage has "/etc/shells" | project TimeGenerated, DeviceName=HostName, AccountName="(unknown)", CommandLine=SyslogMessage; // Combine both sources for a full view ShellProcessEvents | union ShellSyslogEvents | sort by TimeGenerated desc
Correct
1
44.35s
0.0155
o4-mini-low
cat /etc/shells
let ShellFilePath = "/etc/shells"; // 1) Find any processes that reference /etc/shells in their command line let ProcHits = DeviceProcessEvents | where ProcessCommandLine contains ShellFilePath | project TimeGenerated, DeviceName, AccountName, CommandLine = ProcessCommandLine; // 2) Find any file‐access events reading the /etc/shells file let FileHits = DeviceFileEvents | where FileName == "shells" and FolderPath endswith "/etc" | where ActionType has "Read" | project TimeGenerated, DeviceName, AccountName = InitiatingProcessAccountName, CommandLine = InitiatingProcessCommandLine; // Combine and sort union ProcHits, FileHits | sort by TimeGenerated desc
Correct
1
31.60s
0.0097