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Mike Swanson 7b762623ff sync: auto-sync from GURU-5070 at 2026-06-09 10:13:37

Author: Mike Swanson
Machine: GURU-5070
Timestamp: 2026-06-09 10:13:37

2026-06-09 10:14:16 -07:00

5.1 KiB

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Safe Site — NexSite recalled-PDF forensic investigation

User

User: Mike Swanson (mike)
Machine: GURU-5070
Role: admin

Date

Investigation opened 2026-06-08; forensic sweep + reconstruction 2026-06-09.
Reconstructed 2026-06-09 from work done on GURU-5070 (live session eebb22f9-…, which was never /saved — hence this log).

Client

Safe Site Utility Services LLC — M365 tenant safesitellc.com, tenant ID 71b4e637-c802-4137-a812-ae50dbc839e3.
GuruRMM client Safesite fe17552f-736b-42ec-86a2-0e6f107f2397 (sites Bell / Glendale / Unknown).

The request (from Jonathan Byrd, j.byrd@nexsitepartners.com)

External sender m.paris@nexsitepartners.com sent "Re: NWWells - SafeSite - Vendor Forms" with attachment SSUS 06122026.PDF to 9 Safe Site recipients on 2026-06-08 ~18:54 UTC. The email was recalled. Question: was the PDF accessed/downloaded on any managed machine?

Recipient → machine (via Datto "Last User"):

Recipient	Machine	GuruRMM enrolled?
beeanna	0225-DELL3550	yes
david	0622-DAVID-HP	yes
jon	0525-ASUSFX707Z	yes
justinb	0525-DELL3550-1	yes
lennyg	DESKTOP-3USU20B	yes
suzannep	1122-SUZANNE-DELL	yes
travisf	MSI	yes
thomasc	0724-DELL3550	yes
jeremiahw	DESKTOP-LOPKB4G	NOT enrolled

Mail-side findings (COMPLETE)

Mailbox content search (Graph $search for "SSUS 06122026" across all 9 mailboxes) → all [CLEAN]. The recall succeeded — no message carrying the PDF remains in any of the 9 mailboxes.
EXO recall-proof (_recall_proof_poller.sh → ~/Downloads/safesite-recall-proof.json, pulled 2026-06-09 03:39 UTC, after the Exchange Operator SP's Exchange-Admin role finally propagated):
- Search-UnifiedAuditLog FreeText "SSUS 06122026" → 0 rows.
- Delete/purge ops (HardDelete/SoftDelete/MoveToDeletedItems) by the 9 recipients → 0 rows.
- Get-MessageTraceV2 (sender m.paris@nexsitepartners.com) → 74 rows; the message shows Delivered to all 9 recipients before recall (distribution list potholing@ = Expanded).
- Caveat: the UAL does not log a PDF opened directly from an Outlook attachment, so "0 audit hits" is not proof it was never opened — only that there's no mail/SharePoint audit trace.

Endpoint forensic sweep (GuruRMM) — the definitive "on disk / downloaded?" check

Forensic PowerShell (runs as SYSTEM) searches each user profile's Downloads / Desktop / Documents / Outlook Content.Outlook cache / Temp / Recent / OneDrive for *06122026*, reads the Zone.Identifier (Mark-of-the-Web) on any hit, and scans Chrome/Edge download-history DBs for the pattern. Emits JSON {host, hitCount, hits[]}.

First dispatch (2026-06-09 03:44–15:05 UTC): 7 commands; only 2 completed, both CLEAN (hitCount 0) — MSI (travisf) and 0525-DELL3550-1 (justinb). The other 5 failed: "Command timeout" — the Safesite agents are WS-disconnected (alive, last_seen updates ~every minute, but no persistent socket), so short-timeout commands expire before pickup.

Re-dispatch (2026-06-09 ~15:4x UTC, this session): same script, timeout_seconds=1800 so it survives the agents' frequent reconnects. Sent to the 6 remaining enrolled targets:

Machine (recipient)	command_id
0225-Dell3550 (beeanna)	86340d9b
0622-David-HP (david)	8d3e6530
0525-ASUSFX707Z (jon)	9aa25e67
DESKTOP-3USU20B (lennyg)	1cf8dfea
1122-Suzanne-Dell (suzannep)	3322e787
0724-Dell3550 (thomasc)	16b2a2b1

Results → ~/Downloads/safesite-forensic-results.txt. [STATUS: in progress at time of writing — poller collecting.]

Current status / open items (as of 2026-06-09 ~16:10 UTC)

CLEAN — 7 of 9 machines (hitCount 0; no 06122026 file, no Mark-of-the-Web, no browser-DL trace): MSI (travisf), 0525-DELL3550-1 (justinb), 0225-DELL3550 (beeanna), 0622-DAVID-HP (david), 0525-ASUSFX707Z (jon), 1122-SUZANNE-DELL (suzannep), 0724-DELL3550 (thomasc).
2 machines deferred — both effectively offline:
- DESKTOP-3USU20B (lennyg) — enrolled but agent last checked in 13:43 UTC; forensic command queued (will run on reconnect, else re-dispatch).
- DESKTOP-LOPKB4G (jeremiahw) — NOT enrolled in GuruRMM and offline; sweep via Datto/Intune or after agent install once back online.
So far: no evidence the PDF was downloaded or opened on any swept machine.
Underlying issue: Safesite GuruRMM agents are WS-disconnected (known fleet issue) — they execute on reconnect but short timeouts fail. Use timeout_seconds=1800 for this fleet until the WS issue is resolved.

Syncro

Ticket #32395 (Safesite LLC, contact Jonathan Byrd) — created 2026-06-09; initial customer-facing update emailed (recall verified + 6/9-then-7/9 clean); internal progress note added.

Artifacts on GURU-5070

~/Downloads/safesite-recall-proof.json — EXO recall proof.
~/Downloads/safesite-forensic-results.txt — endpoint sweep results.
.claude/scripts/_recall_proof_poller.sh — the EXO poller (one-shot, completed).

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