Question Analysis
On a Windows host, an attacker leveraged COMSVCS.DLL via rundll32.exe to dump the memory of svchost.exe into a file under the Temp directory. Review the file creation logs to determine the exact name of the dump file that was generated.
d400090a-d8ca-4be0-982e-c70598a23de9
Question ID
11/16
Models Correct
1
Valid Answer
69%
Success Rate
Reference Answer
Human-validated correct answer for this question
svchost-exe.dmp
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 | svchost-exe.dmp | DeviceFileEvents
| where ActionType == "FileCreated"
| where InitiatingProcessFileName =~ "rundll32.exe"
| where InitiatingProcessCommandLine has "comsvcs.dll"
| where FolderPath has "Temp"
| project Timestamp, DeviceName, InitiatingProcessCommandLine, FolderPath, FileName, SHA256 | Correct | 1 | 9.84s | 0.0028 |
| gpt-35-turbo | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0115 |
| gpt-4-turbo-2024-04-09 | svchost-exe.dmp | DeviceFileEvents
| where InitiatingProcessFileName == 'rundll32.exe' and InitiatingProcessCommandLine contains 'COMSVCS.DLL' and FolderPath contains 'Temp'
| project FileName | Correct | 1 | 10.35s | 0.0510 |
| gpt-4.1 | svchost-exe.dmp | DeviceFileEvents
| where ActionType == 'FileCreated'
| extend fileNameLower = tolower(FileName),
folderPathLower = tolower(FolderPath),
procFileNameLower = tolower(InitiatingProcessFileName),
procCmdLineLower = tolower(InitiatingProcessCommandLine)
| where procFileNameLower == 'rundll32.exe'
| where procCmdLineLower has 'comsvcs.dll' and procCmdLineLower has 'svchost'
| where folderPathLower has_any('\\temp', '/temp', '\temp', 'temp')
| project TimeGenerated, DeviceName, FileName, FolderPath, InitiatingProcessFileName, InitiatingProcessCommandLine | Correct | 3 | 11.65s | 0.0268 |
| gpt-4.1-finetuned | C:\Users\wipro\AppData\Local\Temp\svchost-exe.dmp | DeviceFileEvents
| where FolderPath contains "Temp" and InitiatingProcessCommandLine contains "comsvcs.dll"
| extend DumpFile = FolderPath
| summarize FirstSeen=min(Timestamp), LastSeen=max(Timestamp) by DumpFile, InitiatingProcessCommandLine, DeviceName
| order by LastSeen desc
| extend TimeGenerated = LastSeen | Correct | 5 | 31.47s | 0.0294 |
| gpt-4.1-mini | svchost-exe.dmp | DeviceFileEvents
| where ActionType == "FileCreated"
| where InitiatingProcessFileName == "rundll32.exe"
| where tostring(InitiatingProcessCommandLine) contains "COMSVCS.DLL"
| where FolderPath contains "\\Temp"
| project TimeGenerated, DeviceName, FolderPath, FileName
| order by TimeGenerated desc | Correct | 3 | 29.44s | 0.0040 |
| gpt-4.1-nano | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0012 |
| gpt-4o | svchost-exe.dmp | DeviceFileEvents
| where FolderPath contains "Temp" and InitiatingProcessFileName == "rundll32.exe" and InitiatingProcessCommandLine contains "COMSVCS.DLL"
| project TimeGenerated, FileName, FolderPath, InitiatingProcessCommandLine | Correct | 1 | 22.42s | 0.0147 |
| grok-3-beta | svchost-exe.dmp | DeviceFileEvents
| where ActionType == "FileCreated"
| where FolderPath contains "Temp"
| where InitiatingProcessFileName == "rundll32.exe"
| where InitiatingProcessCommandLine contains "COMSVCS" or InitiatingProcessCommandLine contains "svchost.exe"
| project Timestamp, FileName, FolderPath, InitiatingProcessFileName, InitiatingProcessCommandLine, DeviceName
| order by Timestamp desc | Correct | 1 | 12.40s | 0.0226 |
| grok-3-mini-beta | svchost-exe.dmp | DeviceFileEvents
| where InitiatingProcessFileName =~ 'rundll32.exe'
| where InitiatingProcessCommandLine contains 'comsvcs.dll' and InitiatingProcessCommandLine contains 'MiniDump'
| where FolderPath contains 'Temp'
| project FileName
| distinct FileName | Correct | 2 | 26.17s | 0.0029 |
| o1-high | svchost-exe.dmp | DeviceFileEvents
| where ActionType == "FileCreated"
| where FolderPath contains "Temp"
| where InitiatingProcessFileName == "rundll32.exe"
| where InitiatingProcessCommandLine has "comsvcs.dll"
| project TimeGenerated, DeviceName, FileName, FolderPath, InitiatingProcessFileName, InitiatingProcessCommandLine
| order by TimeGenerated desc | Correct | 1 | 20.19s | 0.1435 |
| o1-low | svchost-exe.dmp | DeviceFileEvents
| where ActionType == "FileCreated"
| where InitiatingProcessFileName =~ "rundll32.exe"
| where InitiatingProcessCommandLine has "comsvcs.dll"
| where FolderPath contains "Temp"
| project TimeGenerated, DeviceName, FolderPath, FileName, InitiatingProcessCommandLine
| order by TimeGenerated desc | Correct | 1 | 25.63s | 0.1797 |
| o3-mini-high | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0428 |
| o3-mini-low | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0490 |
| o4-mini-high | svchost-exe.dmp | DeviceFileEvents
| where ActionType == "FileCreated"
// Identify rundll32.exe loading COMSVCS.DLL
| where InitiatingProcessFileName == "rundll32.exe"
| where tolower(InitiatingProcessCommandLine) contains "comsvcs.dll"
// Focus on Temp folder
| where tolower(FolderPath) contains "\\temp\\"
// Look only for dump files
| where tolower(FileName) endswith ".dmp"
// Return relevant details
| project TimeGenerated, DeviceName, InitiatingProcessAccountName, FolderPath, FileName, InitiatingProcessCommandLine
| distinct FileName, FolderPath, DeviceName, InitiatingProcessAccountName, TimeGenerated, InitiatingProcessCommandLine | Correct | 1 | 29.37s | 0.0111 |
| o4-mini-low | No answer provided | No query generated | Incorrect | 5 | 0.00s | 0.0260 |