Question Analysis
During a Linux engagement, an operator exported HISTSIZE=0 to turn off shell history and then ran another utility. Using the DeviceProcessEvents table, identify the exact command executed immediately after the history was disabled. What was the command?
cada55b4-8251-4c60-819e-8ec1b33c9306
Question ID
7/16
Models Correct
1
Valid Answer
44%
Success Rate
Reference Answer
Human-validated correct answer for this question
whoami
Model Performance Comparison
See how different AI models performed on this question
| Model | Answer | KQL Query | Status | Attempts | Time | Cost |
|---|---|---|---|---|---|---|
| gemini-2.5-flash-preview-04-17 | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0656 |
| gpt-35-turbo | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0118 |
| gpt-4-turbo-2024-04-09 | whoami | DeviceProcessEvents | where ProcessCommandLine contains 'HISTSIZE=0' | project DisableHistoryTime = ProcessCreationTime, DeviceId, Initiator_ProcessId = ProcessId | join kind=inner (DeviceProcessEvents | project CommandExecuted = ProcessCommandLine, ExecutionTime = ProcessCreationTime, DeviceId, PrevProcessId = InitiatingProcessId) on DeviceId | where PrevProcessId == Initiator_ProcessId and ExecutionTime > DisableHistoryTime | project CommandExecuted, TimeDifference = ExecutionTime - DisableHistoryTime | top 1 by TimeDifference asc | Correct | 1 | 11.93s | 0.0534 |
| gpt-4.1 | /usr/bin/hostname | DeviceProcessEvents
| where ProcessCommandLine contains "HISTSIZE=0"
| project DeviceId, AccountName, CreatedProcessSessionId, TimeHIST=ProcessCreationTime
| join kind=inner (
DeviceProcessEvents
| project DeviceId, AccountName, CreatedProcessSessionId, ProcessCreationTime, ProcessCommandLine
) on DeviceId, AccountName, CreatedProcessSessionId
| where ProcessCreationTime > TimeHIST
| summarize NextTime=min(ProcessCreationTime), NextCommand=any(ProcessCommandLine) by DeviceId, AccountName, CreatedProcessSessionId, TimeHIST
| order by TimeHIST desc
| project DeviceId, AccountName, TimeHIST, NextTime, NextCommand | Incorrect | 2 | 11.55s | 0.0229 |
| gpt-4.1-finetuned | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0523 |
| gpt-4.1-mini | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0083 |
| gpt-4.1-nano | pwsh -Command "Invoke-AtomicTest T1562.003 -TestGuids 386d3850-2ce7-4508-b56b-c0558922c814 -TimeoutSeconds 120 " | let hist_command = toscalar(
DeviceProcessEvents
| where ProcessCommandLine contains "HISTSIZE=0"
| summarize max(Timestamp)
);
DeviceProcessEvents
| where Timestamp > hist_command
| top 1 by Timestamp asc
| project CommandLine = ProcessCommandLine | Incorrect | 1 | 2.04s | 0.0005 |
| gpt-4o | whoami | let disableHistoryCmd = DeviceProcessEvents
| where ProcessCommandLine contains "export HISTSIZE=0"
| project DeviceId, DeviceName, ProcessCommandLine, HistDisableTime=ProcessCreationTime;
DeviceProcessEvents
| join kind=inner (disableHistoryCmd) on DeviceId
| where ProcessCreationTime > HistDisableTime
| project ProcessCommandLine, NextCommandTime=ProcessCreationTime
| top 1 by NextCommandTime asc | Correct | 3 | 28.59s | 0.0367 |
| grok-3-beta | pwsh | DeviceProcessEvents
| where Timestamp > ago(90d)
| where ProcessCommandLine contains "HISTSIZE=0" or InitiatingProcessCommandLine contains "HISTSIZE=0"
| project Timestamp, DeviceId, DeviceName, AccountName, HistoryDisableCommandLine = ProcessCommandLine, InitiatingCommandLine = InitiatingProcessCommandLine
| join kind=inner (
DeviceProcessEvents
| where Timestamp > ago(90d)
| project Timestamp, DeviceId, AccountName, NextCommandLine = ProcessCommandLine, NextTimestamp = Timestamp
) on DeviceId, AccountName
| where NextTimestamp > Timestamp
| summarize arg_min(NextTimestamp, NextCommandLine) by Timestamp, DeviceId, DeviceName, AccountName, HistoryDisableCommandLine, InitiatingCommandLine
| project Timestamp, DeviceName, AccountName, HistoryDisableCommandLine, NextCommandLine, NextTimestamp
| order by Timestamp desc | Incorrect | 1 | 26.81s | 0.0308 |
| grok-3-mini-beta | whoami | DeviceProcessEvents
| where ProcessCommandLine contains "export HISTSIZE=0"
| project DeviceId, HistoryTime = TimeGenerated
| join kind=inner (
DeviceProcessEvents
) on DeviceId
| where TimeGenerated > HistoryTime
| summarize arg_min(TimeGenerated, NextCommand=ProcessCommandLine) by DeviceId, HistoryTime
| project NextCommand
| distinct NextCommand | Correct | 3 | 51.79s | 0.0047 |
| o1-high | whoami | DeviceProcessEvents
| where ActionType == "ProcessCreated"
| order by DeviceId asc, TimeGenerated asc
| serialize
| extend NextCommandLine = next(ProcessCommandLine)
| extend NextProcessTime = next(TimeGenerated)
| where ProcessCommandLine has "export HISTSIZE=0"
| project DeviceName, NextProcessTime, NextCommandLine
| order by NextProcessTime asc | Correct | 2 | 105.02s | 0.6503 |
| o1-low | whoami | // Find processes where HISTSIZE was disabled
let TurnOffHistory = DeviceProcessEvents
| where ProcessCommandLine has "export HISTSIZE=0"
| project DeviceId, AccountSid, TurnOffTime=ProcessCreationTime;
// Join against all DeviceProcessEvents to find the earliest next command
TurnOffHistory
| join kind=inner (
DeviceProcessEvents
| project DeviceId, AccountSid, ProcessCreationTime, ProcessCommandLine
) on DeviceId, AccountSid
| where ProcessCreationTime > TurnOffTime
| summarize arg_min(ProcessCreationTime, *) by DeviceId, AccountSid, TurnOffTime
| project DeviceId, AccountSid, TurnOffTime, NextCommand=ProcessCommandLine | Correct | 2 | 127.81s | 0.5293 |
| o3-mini-high | nextCmd | let disableEvents =
DeviceProcessEvents
| where InitiatingProcessCommandLine contains "export HISTSIZE=0"
| project CreatedProcessSessionId, disable_time = ProcessCreationTime;
DeviceProcessEvents
| join kind=inner (disableEvents) on CreatedProcessSessionId
| where ProcessCreationTime > disable_time
| summarize nextCmd = arg_min(ProcessCreationTime, ProcessCommandLine) by CreatedProcessSessionId, disable_time
| project nextCmd
| Incorrect | 1 | 16.56s | 0.0128 |
| o3-mini-low | whoami | let disableEvents =
DeviceProcessEvents
| where ProcessCommandLine contains "HISTSIZE=0"
| project DeviceId, DisableTime = ProcessCreationTime, DisableCommand = ProcessCommandLine;
let subsequentCommands =
DeviceProcessEvents
| project DeviceId, ProcessCreationTime, NextCommand = ProcessCommandLine;
disableEvents
| join kind=inner (subsequentCommands) on DeviceId
| where ProcessCreationTime > DisableTime
| summarize FirstSubsequentCommand = arg_min(ProcessCreationTime, NextCommand) by DeviceId, DisableTime, DisableCommand
| project DeviceId, DisableTime, DisableCommand, FirstSubsequentCommand
| limit 1 | Correct | 3 | 43.45s | 0.0351 |
| o4-mini-high | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0509 |
| o4-mini-low | whoami | let histOff = DeviceProcessEvents
| where ProcessCommandLine has "HISTSIZE=0"
| project DeviceId, Session = CreatedProcessSessionId, histTime = TimeGenerated;
histOff
| join kind=inner (
DeviceProcessEvents
| project DeviceId, Session = CreatedProcessSessionId, nextTime = TimeGenerated, nextCmd = ProcessCommandLine
) on DeviceId, Session
| where nextTime > histTime
| summarize arg_min(nextTime, nextCmd) by DeviceId, Session
| project DeviceId, CommandRunAfterHistOff = nextCmd, TimeRun = nextTime | Correct | 2 | 79.03s | 0.0231 |