Question Analysis
An attacker on Linux used bash to copy all files from /var/spool/mail into a newly created subdirectory before modifying them. What is the name of that subdirectory?
6d99f93c-da56-49e3-b195-163090ace4f6
Question ID
2/16
Models Correct
1
Valid Answer
13%
Success Rate
Reference Answer
Human-validated correct answer for this question
copy
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 | fi | DeviceProcessEvents
| where ActionType == "ProcessCreated"
| where InitiatingProcessFileName in~ ("bash", "sh")
| where ProcessCommandLine contains " cp "
| where ProcessCommandLine contains "/var/spool/mail"
| extend destination_path = extract(@'.* cp .* /var/spool/mail.*?\s+([^\s&;>]+)(\s*|&|;|>).*', 1, ProcessCommandLine)
| where isnotempty(destination_path)
| extend dest_components = split(destination_path, '/')
| extend subdir_name = tostring(dest_components[array_length(dest_components) - 1])
| where isnotempty(subdir_name)
| distinct subdir_name
| project SubdirectoryName = subdir_name | Incorrect | 3 | 128.94s | 0.0764 |
| gpt-35-turbo | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0109 |
| gpt-4-turbo-2024-04-09 | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.2468 |
| gpt-4.1 | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0560 |
| gpt-4.1-finetuned | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0424 |
| gpt-4.1-mini | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0069 |
| gpt-4.1-nano | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0013 |
| gpt-4o | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0446 |
| grok-3-beta | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.1047 |
| grok-3-mini-beta | copy | DeviceProcessEvents
| where InitiatingProcessFileName =~ 'bash'
| where ProcessCommandLine contains 'cp' and ProcessCommandLine contains '/var/spool/mail'
| extend SubDir = extract(@'cp\s+/var/spool/mail/[^\s]+\s+([^\s]+)', 1, ProcessCommandLine) // Extracts the destination subdirectory from the command line
| project Timestamp, DeviceName, ProcessCommandLine, SubDir
| summarize arg_max(Timestamp, *) by SubDir // Summarizes to get the latest event per unique subdirectory | Correct | 1 | 17.76s | 0.0016 |
| o1-high | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.8522 |
| o1-low | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.8053 |
| o3-mini-high | dest_directory | DeviceProcessEvents
| where InitiatingProcessFileName == "bash"
| where ProcessCommandLine has "cp" and ProcessCommandLine has "/var/spool/mail"
| extend dest_directory = extract(@"/var/spool/mail/([^/\s]+)", 1, ProcessCommandLine)
| where isnotempty(dest_directory)
| summarize count() by dest_directory
| project dest_directory | Incorrect | 1 | 15.89s | 0.0123 |
| o3-mini-low | copy | DeviceProcessEvents
| where InitiatingProcessFileName =~ "bash"
| where InitiatingProcessCommandLine has "cp" and InitiatingProcessCommandLine has "/var/spool/mail"
| extend destFolder = extract("cp\\s+(?:-r\\s+)?/var/spool/mail\\s+(/var/spool/mail/\\S+)", 1, InitiatingProcessCommandLine)
| extend subdirectory = replace("/var/spool/mail/", "", destFolder)
| project TimeGenerated, InitiatingProcessCommandLine, destFolder, subdirectory
| limit 100 | Correct | 3 | 31.93s | 0.0281 |
| o4-mini-high | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0586 |
| o4-mini-low | done' | DeviceProcessEvents
| where InitiatingProcessFileName == "bash"
| where ProcessCommandLine has "cp"
| where ProcessCommandLine has "/var/spool/mail"
| extend args = split(ProcessCommandLine, " ")
// The last element in args should be the destination path
| extend destPath = tostring(args[array_length(args) - 1])
| where destPath != "/var/spool/mail"
| extend subdirectory = extract(@"([^/]+)$", 1, destPath)
| summarize occurrences = count() by subdirectory
| sort by occurrences desc | Incorrect | 2 | 83.06s | 0.0169 |