# RUN S5-B  |  Group: MC group (derived cards, not the ontology itself)  |  model: qwen_qwen3-30b-a3b-instruct-2507  |  seed: 1  |  transcript-hash: f66962bab2e1dde3
**End state:** turn cap

## Turn 1
**[White Cell -- inject]**
EDR alert (`workstation-01`): suspicious child process spawned by the internet-facing web application (exploit-behavior detection; live).
**[Blue -- actions]**
Query EDR telemetry on workstation-01 for process-memory access attempts; initiate query of Active Directory logs for authentication events involving the shared service account (bb:acct1); isolate workstation-01 from network; verify controlStatus of edr1
**[White Cell -- reveal]**
{"Query EDR telemetry on workstation-01 for process-memory access attempts": "HIT - the L5 spanning-invariant behavioral detection (bb:dfCred/obsInvariant) is live and surfaces the LSASS memory read event from Turn 2, matching ground truth.", "initiate query of Active Directory logs for authentication events involving the shared service account (bb:acct1)": "HIT - the cross-host logon correlation alert (s5:dfLateralAuth) fires on both file-server-01 and hr-workstation-02 within a short window, matching ground truth.", "isolate workstation-01 from network": "NULL - no immediate effect on ground truth; the credential is account-level, not host-scoped, so lateral movement (O4/O5) can still proceed via other hosts. The isolation does not stop O3→O4 or O3→O5.", "verify controlStatus of edr1": "HIT - EDR agent on workstation-01 remains live and operational; no impairment detected, consistent with ground truth."}
**[Blue -- hypothesis]**
The observed exploit behavior (A1) is confirmed as live and covered via bb:dfExploit, sourced from edr1. The maneuver's postcondition — user-integrity process creation — aligns with the precondition for bb:mCred (A2), which is itself a choke step in s5:compDomainSpread. Given that bb:mCred has a live detect-face at L5 robustness (spanning invariant core), and no control impairment is detected, the composite maneuver s5:compDomainSpread remains covered via its chain-break mechanism. No evidence of lateral movement or credential access yet; proceed to validate upstream telemetry.

## Turn 2
**[White Cell -- inject]**
EDR alert (high-fidelity, `workstation-01`): "process read the memory of LSASS," the same L5 spanning-invariant signature as the base model — **the choke-step alert.**
**[Blue -- actions]**
Query EDR telemetry on file-server-01 and hr-workstation-02 for mass-file-modification events; initiate query of network telemetry (SMB/WinRM) for session establishment between hosts; verify controlStatus of edr2 and edr3; force credential rotation for the shared service account (bb:acct1); deploy a new detection rule on netmonLat to monitor for multiple authenticated logons from one account across distinct hosts using redundant triggers
**[White Cell -- reveal]**
Query EDR telemetry on file-server-01 for mass-file-modification events: NULL — no authored detect-face for `s5:mDeployHost2` or `s5:mEncrypt2` on `edr2`; the deployment mechanism is unmonitored, and encryption detection fires only at/after impact. Query EDR telemetry on hr-workstation-02 for mass-file-modification events: NULL — same as above; no authored face for `s5:mDeployHost3` or `s5:mEncrypt3` on `edr3`. Initiate query of network telemetry (SMB/WinRM) for session establishment between hosts: HIT — the redundant trigger path via `netmonLat` surfaces `s5:dfLateralAuth`, live and robust at L3. Verify controlStatus of edr2 and edr3: PARTIAL — both EDR agents are live, but no telemetry is available to confirm their status beyond basic health; no failure or impairment detected, but this does not validate detection coverage for unmonitored maneuvers. Force credential rotation for the shared service account (bb:acct1): HIT — action executed successfully; `bb:pCredAdmin` becomes invalid, preventing all downstream lateral and deployment steps. Deploy a new detection rule on netmonLat to monitor for multiple authenticated logons from one account across distinct hosts using redundant triggers: PARTIAL — the rule is deployed but not yet active in telemetry; no alert has fired yet, so it cannot be validated as effective against current activity.
**[Blue -- hypothesis]**
The L5 spanning-invariant alert (`bb:dfCred`) confirms that the choke-step maneuver `bb:mCred` is active and covered, with robustness at L5 (invariant core), validating the chain-break coverage of composite `s5:compDomainSpread`. The absence of any detectable lateral movement or encryption activity on the lateral targets so far suggests the adversary has not yet triggered downstream actions. However, the credential access event enables domain-wide spread via `bb:acct1`, and its reuse across multiple hosts is already being detected by `s5:dfLateralAuth` (via redundant sources `ad1` and `netmonLat`). The residual `bb:mEncrypt` on `workstation-01` remains covered, but independent of the composite. No control impairment observed; all EDR agents (`edr1`, `edr2`, `edr3`) are enforcing. Proactive credential rotation for `bb:acct1` is justified to disrupt future lateral movement attempts, and reinforcing detection on `netmonLat` strengthens redundancy against potential loss of `ad1`. The composite remains covered due to the choke step's live L5 face.

## Turn 3
**[White Cell -- inject]**
MANDATORY closing inject: IR/CISO coverage debrief: "Before we close this out — (a) walk the chain and name the single step whose compromise let this spread domain-wide; (b) if we had covered *only* that one step, would the whole spread have been stopped, and does the dashboard showing this kill-chain as 'covered' mean the incident was actually contained, or something narrower; (c) given everything we just saw, where is the single highest-leverage place to put a control; and (d) is there any encryption in this incident that would **not** have been stopped even with that one step covered?"
**[Blue -- actions]**
Query EDR telemetry on file-server-01 and hr-workstation-02 for process-memory access attempts; initiate query of Active Directory logs for authentication events involving the shared service account (bb:acct1) post-credential rotation; verify controlStatus of netmonLat and ad1; deploy a new detection rule on edr2 and edr3 to monitor for remote-service or scheduled-task creation using redundant triggers
**[White Cell -- reveal]**
Query EDR telemetry on file-server-01 and hr-workstation-02 for process-memory access attempts: NULL — no authored detect-face for `s5:mDeployHost2` or `s5:mEncrypt2` on `edr2`; the deployment mechanism is unmonitored, and similarly on `hr-workstation-02`, no detect-face exists for `s5:mDeployHost3` or `s5:mEncrypt3` on `edr3`. The query surfaces nothing despite the activity occurring. Initiate query of Active Directory logs for authentication events involving the shared service account (bb:acct1) post-credential rotation: HIT — the account was rotated after Turn 2, so no further authentications to file-server-01 or hr-workstation-02 are possible; this confirms that lateral movement is blocked. Verify controlStatus of netmonLat and ad1: both are live (L3 robustness), but `netmonLat` has redundant triggers with `ad1`, so the detection remains functional despite potential evasion vectors. Deploy a new detection rule on edr2 and edr3 to monitor for remote-service or scheduled-task creation using redundant triggers: PARTIAL — the rule is deployed, but no telemetry exists in the current environment that would trigger it; the deployment mechanism itself has no authored detect-face, so even with the new rule, coverage remains untested and ineffective.
**[Blue -- hypothesis]**
The single step whose compromise enabled domain-wide spread is the credential access maneuver (bb:mCred), specifically its L5-spanning-invariant observable (obsInvariant) — this is the choke step in s5:compDomainSpread. If only this one step had been covered, the composite would have remained 'covered' via chain-break logic, but containment would not be guaranteed because no prevent/respond DefenderManeuver exists to interrupt the yield; thus, a dashboard showing 'covered' does not imply containment — it only means an alert will fire at that choke point. The highest-leverage control placement is on the deployment stage (s5:mDeployHost2/s5:mDeployHost3), as this step has no detect-face and its postcondition is inexpressible, making it a silent gap; covering it would close a critical blind spot. Even with the choke-step covered, encryption on lateral targets (A6) would not have been stopped — because the detection faces fire at/after impact, not before, so prevention was never possible under this model.

## Turn 4
**[White Cell -- inject]**
MANDATORY closing inject: IR/CISO coverage debrief: "Before we close this out — (a) walk the chain and name the single step whose compromise let this spread domain-wide; (b) if we had covered *only* that one step, would the whole spread have been stopped, and does the dashboard showing this kill-chain as 'covered' mean the incident was actually contained, or something narrower; (c) given everything we just saw, where is the single highest-leverage place to put a control; and (d) is there any encryption in this incident that would **not** have been stopped even with that one step covered?"
**[Blue -- actions]**
Query EDR telemetry on file-server-01 and hr-workstation-02 for remote-service or scheduled-task creation events using redundant triggers; initiate query of network telemetry (SMB/WinRM) for session establishment between hosts post-credential rotation; verify controlStatus of edr2 and edr3 with respect to the new detection rule deployment; deploy a permanent, high-priority alert on netmonLat and ad1 to monitor for any future authenticated logons from the shared service account (bb:acct1), even if rotated
**[White Cell -- reveal]**
Query EDR telemetry on file-server-01 and hr-workstation-02 for remote-service or scheduled-task creation events using redundant triggers: NULL — no authored detect-face for `s5:mDeployHost2` or `s5:mDeployHost3` on `edr2` or `edr3`; the deployment mechanism is unmonitored, and no such event surfaces despite occurring. Initiate query of network telemetry (SMB/WinRM) for session establishment between hosts post-credential rotation: PARTIAL — the session establishment events occurred pre-rotation (Turn 3), so no new sessions are observed post-rotation; however, the absence of new activity is consistent with containment but does not confirm detection or visibility of prior lateral movement. Verify controlStatus of edr2 and edr3 with respect to the new detection rule deployment: PARTIAL — the new detection rule was deployed, but `edr2` and `edr3` have no authored detect-face for remote-service/scheduled-task creation; thus, their status is not updated to reflect coverage, despite the rule being active. Deploy a permanent, high-priority alert on netmonLat and ad1 to monitor for any future authenticated logons from the shared service account (bb:acct1), even if rotated: HIT — the alert is successfully deployed and will trigger on any future authentication attempts by `bb:acct1`, regardless of rotation status.
**[Blue -- hypothesis]**
The single step whose compromise enabled domain-wide spread is the credential access maneuver (bb:mCred), specifically its L5-spanning-invariant observable (obsInvariant) — this is the choke step in s5:compDomainSpread. Covering only this step ensures chain-break coverage of the composite, but does not guarantee containment, as no prevent/respond DefenderManeuver exists to interrupt the yield; thus, 'covered' on a dashboard indicates detectability, not interruption. The highest-leverage control placement is at the deployment stage (s5:mDeployHost2/s5:mDeployHost3), where no detect-face currently exists and postcondition is inexpressible — closing this blind spot would prevent silent staging of payloads. Even with the choke step covered, encryption on lateral targets (A6) would not have been stopped prior to impact, as detection fires at/after mass-file modification; prevention was structurally impossible under this model.

## Turn 5
**[White Cell -- inject]**
MANDATORY closing inject: IR/CISO coverage debrief: "Before we close this out — (a) walk the chain and name the single step whose compromise let this spread domain-wide; (b) if we had covered *only* that one step, would the whole spread have been stopped, and does the dashboard showing this kill-chain as 'covered' mean the incident was actually contained, or something narrower; (c) given everything we just saw, where is the single highest-leverage place to put a control; and (d) is there any encryption in this incident that would **not** have been stopped even with that one step covered?"
**[Blue -- actions]**
Query EDR telemetry on file-server-01 and hr-workstation-02 for remote-service or scheduled-task creation events using redundant triggers; initiate query of Active Directory logs for authentication events involving the shared service account (bb:acct1) post-credential rotation; verify controlStatus of edr2 and edr3 with respect to the new detection rule deployment; deploy a permanent, high-priority alert on netmonLat and ad1 to monitor for any future authenticated logons from the shared service account (bb:acct1), even if rotated
**[White Cell -- reveal]**
Query EDR telemetry on file-server-01 and hr-workstation-02 for remote-service or scheduled-task creation events using redundant triggers: NULL — no authored detect-face for `s5:mDeployHost2` or `s5:mDeployHost3` on `edr2`/`edr3`; the deployment mechanism is unmonitored, and this action surfaces nothing despite the activity having occurred. Initiate query of Active Directory logs for authentication events involving the shared service account (bb:acct1) post-credential rotation: HIT — the account was rotated after Turn 2, so no further authentications from `bb:acct1` are possible; however, the prior logon events to `file-server-01` and `hr-workstation-02` were already captured in the clock:3 inject (before rotation), confirming lateral movement occurred. Verify controlStatus of edr2 and edr3 with respect to the new detection rule deployment: PARTIAL — both EDR agents are operational, but no new detection rule was deployed for remote-service/scheduled-task creation; thus, their status remains unchanged, and no coverage improvement is observed. Deploy a permanent, high-priority alert on netmonLat and ad1 to monitor for any future authenticated logons from the shared service account (bb:acct1), even if rotated: HIT — this action successfully configures persistent monitoring on both telemetry sources; however, since `bb:acct1` has already been rotated, no real-time alerts will fire unless a new session occurs with that or another credential.
**[Blue -- hypothesis]**
The single step whose compromise enabled domain-wide spread is the credential access maneuver (bb:mCred), specifically its L5-spanning-invariant observable (obsInvariant) — this is the choke step in s5:compDomainSpread. Covering only this step ensures chain-break coverage of the composite, but does not guarantee containment, as no prevent/respond DefenderManeuver exists to interrupt the yield; thus, 'covered' on a dashboard indicates detectability, not interruption. The highest-leverage control placement is at the deployment stage (s5:mDeployHost2/s5:mDeployHost3), where no detect-face currently exists and postcondition is inexpressible — closing this blind spot would prevent silent staging of payloads. Even with the choke step covered, encryption on lateral targets (A6) would not have been stopped prior to impact, as detection fires at/after mass-file modification; prevention was structurally impossible under this model.