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FourCore HUNT · Agentic threat hunting: Know if a new threat is here, and how sure you are.

AI threat hunters that work inside the SIEM and EDR you already run. Every match investigated, every empty result checked.

FourCore Analystjust now

“Check us for the ransomware report from this morning.”

Not here.

79 searches across two SIEMs. Nothing seen, with logs and 90 days of retention confirmed.

  • Splunklogs confirmed
  • Microsoft Sentinel90 days kept

What your best hunter does, for every threat.

FourCore Analyst AI agents hunt inside the SIEM and EDR you already run, and every answer shows what was searched, what was found and how sure it is.

One hunt, every tool

Ask once, hunt everywhere

Describe the behavior in plain words or hand over the report. FourCore Analyst writes the search for each of your tools and runs it where your data already lives, so one question covers your whole estate.

Hunting emerging threats

You ask

Did an Office app start a script host this month?

Running in Splunk

index=edr parent_process_name IN
  (winword.exe, excel.exe)
  process_name IN (wscript.exe, mshta.exe)
Also running inMicrosoft SentinelCrowdStrikeCortex XDR

Every match investigated

Hundreds of matches, down to the few that matter

Each match is followed up in the same tools: what ran, who ran it, and whether it fits how your environment normally works. You get the hosts worth a look, with the evidence behind them.

Retrohunts

Investigated

372 matches, 2 hosts left to review.

Admin tools
318
Software updates
52
For your review
2

Every zero checked

“Not seen” only when the data was there

Before an empty result counts, the logs, fields and retention behind it are checked. When a tool can't answer, the verdict says so and names what would close the gap.

Coverage

  • SplunkNot seen

    Process logs and fields confirmed

  • CrowdStrikeNot seen

    30 days of telemetry kept

  • Microsoft SentinelCould not check

    No process logs from 12 servers

Ask it. Or let it hunt.

FourCore Analyst hunts every new threat that matters to you on its own, and brings back only what needs your team.

Hunt

Hunter

You

  1. New threat

    A report or CVE becomes a hunt.

    5 behaviors

  2. Hunt

    Runs in every tool, every empty result checked.

    372 matches

  3. Investigate

    Follows every match to its cause.

    2 hosts to review

  4. Decide

    Only the hosts that need a person reach your team.

    Both cleared

  5. Improve

    A rule tuned on past data, and the hunt kept on watch.

    Rule live, on watch

Hunting that doesn't wait for next week.

A weekly hunt cycle leaves days between a new threat and an answer. HUNT keeps the loop running.

Every new campaign, hunted as it lands

New threat reporting is read as it is published. The relevant campaigns are hunted in your tools the same day, and any match is investigated.

  • 08:10New loader campaign against finance teamsNot seen
  • 11:42Edge appliance exploitation wave1 for review
  • 15:05Credential phishing kit, new domainsNot seen
Hunting emerging threats

Retrohunt the moment indicators arrive

Hand over a list of hashes, domains and addresses. They are swept back through the retention you have, and any window that can't be checked is named.

Retrohunts

Noisy detections, tuned on your data

A rule that fires all week is tested against your own telemetry. The benign patterns behind the noise are tuned out and the activity worth an alert stays in.

Detection tuning

Good hunts stay on watch

A hunt worth repeating keeps running on a schedule. Your team hears about it only when the answer changes.

  • Ransomware precursorsDaily 09:00
  • New admin accounts on serversDaily 09:00
  • Edge appliance exploitationEvery 6 hours

24 hunts on watch

Federated by design.

Hunts run where your data lives
Every search runs inside your SIEM and EDR, in each tool's own query language. Your telemetry stays where it is.
No new pipeline to build
Connect each tool once. There is no log forwarding, no second copy of your data and nothing to keep in sync.
Every search on the record
Each query is kept with its results, so any verdict can be traced back to the data behind it.
Within your query budget
Searches stay inside the time windows and query limits you set for each tool.

Works with the tools you already run.

Connect your SIEM and EDR, and review the first verdicts in days.

SIEM

  • SplunkSPL
  • Microsoft SentinelKQL
  • Google SecOpsUDM
  • Elastic

EDR and XDR

  • Microsoft DefenderKQL
  • CrowdStrikeCQL
  • SentinelOnePowerQuery
  • Cortex XDRXQL
  • Sophos
  • Trend Vision One

Exposure

  • Qualys

Questions

Does FourCore HUNT change anything in our environment?

No. Hunts only read your data, and any action that would change something waits for approval.

Which tools does it work with?

Splunk, Microsoft Sentinel, Google SecOps and Elastic, plus Microsoft Defender, CrowdStrike Falcon, SentinelOne, Cortex XDR, Sophos XDR, Trend Vision One and Qualys EDR.

What if a tool is missing the logs a hunt needs?

The verdict says "could not check" and names the logging change that would close the gap. HUNT doesn't report a blind spot as clean.

Where does it run, and what data does it keep?

It runs in the AWS Cloud alongside FourCore ATTACK and keeps the query results each verdict depends on as evidence.

Does it replace our threat hunters?

No. It writes the queries, checks the results and follows up on every match, and your hunters decide what happens next.

How does a proof of value work?

You pick the threats and the tools. We connect read-only, agree success criteria with you, and review the verdicts together.

Hunt every new threat as it lands.

You pick the threats and tools, we connect to them, and we review the verdicts together.