Classification: TLP:CLEAR | Publication Date: 2026-10-31 | Source: ransomware.live leak-site monitoring | Nature of data: Unverified threat-actor claims

EMPERADOR Ransomware Gang: 4 New Leak-Site Listings — Sector Targeting Analysis & Detection Content

Executive Summary

Between 2026-10-29 and 2026-10-31, the ransomware group EMPERADOR published four new victim listings on its dark web leak site. All four postings were independently observed by two separate leak-site crawlers, confirming the gang made these claims — but none of these listings constitute a confirmed breach.

The organizations EMPERADOR claims to have compromised are:

• Holcim (Manufacturing, CH) — listed 2026-10-31
• Studio Stelitano e Associati (Professional Services, IT) — listed 2026-10-30
• LA PROFUMERIA SRL (Retail & E-Commerce, IT) — listed 2026-10-29
• MAA Group Consulting Engineers (Professional Services, country undetermined) — listed 2026-10-29

The cluster shows a clear geographic tilt toward Switzerland and Italy and a sector mix weighted toward professional services and manufacturing. Organizations in those sectors and regions — and any third parties connected to the named organizations — should treat this as a trigger to run the detection content in this briefing, validate perimeter patching, and review incident response readiness. Nothing in this briefing confirms any organization has suffered an intrusion; that determination belongs to the organizations themselves and their regulators.

Sourcing & Verification

• 4 of 4 listings in this dataset were independently observed by a second leak-site crawler (multi-source). 0 listings rely on a single source. Multi-source observation confirms the posting exists on the gang's infrastructure; it does not verify the underlying intrusion.
• Inclusion in this briefing reflects the threat actor's claim only. It is not confirmation of a breach, data theft, or any security incident at the named organizations.
• A named organization may dispute or deny a listing. A denial is likewise not proof the claim is false — disclosure obligations vary by jurisdiction and sector, and not every incident is legally reportable. Neither silence nor denial settles the question. Only the organization or its regulator can confirm an incident.
• Security Arsenal will publish corrections as warranted and welcomes contact from any named organization at security@securityarsenal.com.

Threat Actor Profile — EMPERADOR

EMPERADOR is a ransomware operation tracked via its dedicated leak site (DLS) on Tor. Public attribution data on the group remains limited; the profile below reflects observed operational patterns from leak-site monitoring and sector reporting, and should be read as analyst assessment rather than established fact.

• Aliases: No firmly established aliases. Some underground chatter associates EMPERADOR-branded tooling with rebranded components of earlier mid-tier ransomware families, but no consensus attribution exists. Treat rebranding as plausible — gang turnover and brand recycling are the norm post-2024 enforcement pressure.
• Operating model: Assessed as a closed or semi-closed group rather than a fully open RaaS program. Posting cadence (4 victims in ~72 hours, low overall volume in the last 100 postings window) is consistent with a small operator set or a tightly curated affiliate roster, not a high-volume affiliate mill.
• Ransom demands: No verified demand amounts are public for this group. Based on victim profile (mid-market professional services, regional retail, large manufacturing), demands in this cohort typically range from low six figures (small professional services) to seven figures (enterprise manufacturing), with the negotiation window compressed by a countdown on the DLS.
• Initial access methods (assessed): Consistent with peer groups in this tier: exploitation of internet-facing remote access (VPN concentrators, firewalls, RDP), spear-phishing with macro-enabled documents or malicious loaders, and purchase of access from initial access brokers (IABs). There is no confirmed initial-access vector for any of the four current listings.
• Extortion model: Double extortion. The DLS presence indicates data theft precedes encryption, with leak threats used as leverage even where victims can restore from backup.
• Dwell time: Unknown for this group specifically. Sector-comparable groups show median dwell times of 3–11 days between initial access and detonation, with exfiltration typically occurring in the final 24–72 hours. Defenders should assume the staging phase — not the encryption — is the highest-value detection window.

Current Campaign Analysis

Sector targeting

Professional services is the standout: firms of this type aggregate confidential client documents, making them disproportionately valuable for extortion even when their own revenue is modest.

Geographic concentration

Three of four listings with determinable geography are in Switzerland (CH) and Italy (IT) — a compact Central/Southern European focus. MAA Group Consulting Engineers' country is not determinable from the listing data. This pattern suggests either deliberate regional targeting, an affiliate with regional language/access advantages, or opportunistic exploitation of a vulnerability prevalent in European mid-market infrastructure.

Victim profile

The set spans a wide revenue band: from small professional partnerships and a regional retailer (likely €1–20M revenue) up to a multinational manufacturer. This mixed profile is characteristic of opportunistic access-broker-driven operations rather than tightly curated big-game hunting — the gang appears to monetize whatever access it obtains, then publicize the largest names for pressure.

Posting cadence and escalation

Four listings in a rolling ~72-hour window, against a backdrop of only 4 listings in the most recent 100-posting sample for this gang, indicates either a campaign burst (multiple accesses matured simultaneously) or a deliberate publicity push. Watch for: countdown timers converting to partial data dumps, and whether additional CH/IT professional-services names appear in the next 7 days.

CVE exposure context (hypothesis, not attribution)

There is no evidence linking any specific CVE to any named organization in this dataset. However, EMPERADOR's assessed access methods align with several vulnerabilities currently on the CISA Known Exploited Vulnerabilities list with confirmed ransomware use, and these represent sector-level exposure worth immediate validation:

• CVE-2026-50751 — Check Point Security Gateway improper authentication (IKEv1): perimeter device takeover; a classic entry point for exactly this tier of actor.
• CVE-2026-20316 — Cisco Secure FMC hard-coded password: management-plane compromise enabling firewall reconfiguration and internal pivot.
• CVE-2026-59310 — VMware vCenter path traversal: virtualization-layer compromise; catastrophic for manufacturing and mid-market virtualization estates, enables mass encryption from a single foothold.
• CVE-2026-63077 — JetBrains TeamCity deserialization: CI/CD compromise; particularly relevant to consulting/engineering firms with in-house development, and a supply-chain amplification risk.
• CVE-2026-48027 — Nx Console embedded malicious code: developer-workstation supply-chain vector; relevant to the same engineering/professional-services profile.

Treat the Check Point and Cisco perimeter CVEs as the highest-probability hypothesis for this actor profile, and validate patch state on those appliances first.

Detection Engineering

The following content targets the TTPs this class of actor reliably exhibits: perimeter/remote-access compromise, macro-based phishing execution, lateral movement via PsExec/WMI and scheduled tasks, and pre-encryption data staging and shadow-copy destruction.

---
title: EMPERADOR-Style Pre-Ransomware Staging - Mass Archive Creation and Shadow Copy Deletion
id: 9f2a1c4e-7b3d-4e1a-a8c5-emp3r4d0r001
description: Detects data staging (archive tools) followed or preceded by Volume Shadow Copy deletion - a signature pre-encryption sequence observed across double-extortion ransomware operations.
status: experimental
date: 2026/10/31
author: Security Arsenal Threat Intel
logsource:
  category: process_creation
  product: windows
detection:
  selection_staging:
    Image|endswith:
      - '\rar.exe'
      - '\7z.exe'
      - '\7za.exe'
      - '\winrar.exe'
    CommandLine|contains:
      - ' a '
      - '.rar'
      - '.7z'
      - '.zip'
  selection_vss:
    Image|endswith:
      - '\vssadmin.exe'
      - '\wmic.exe'
      - '\bcdedit.exe'
      - '\wbadmin.exe'
    CommandLine|contains:
      - 'delete shadows'
      - 'shadowcopy delete'
      - 'resize shadowstorage'
      - 'recoveryenabled no'
  condition: selection_staging or selection_vss
falsepositives:
  - Legitimate backup administration
  - IT archiving scripts
level: high
tags:
  - attack.impact
  - attack.t1490
  - attack.t1560.001
---
title: EMPERADOR-Style Lateral Movement - PsExec or Remote Service Install with New Admin Session
id: 9f2a1c4e-7b3d-4e1a-a8c5-emp3r4d0r002
description: Detects PsExec-style remote execution and service-based lateral movement commonly used by ransomware operators to push encryptors across the estate.
status: experimental
date: 2026/10/31
author: Security Arsenal Threat Intel
logsource:
  category: process_creation
  product: windows
detection:
  selection_psexec:
    - Image|endswith: '\psexec.exe'
    - OriginalFileName: 'psexec.c'
    - Image|endswith: '\psexesvc.exe'
    - CommandLine|contains|all:
        - '\\'
        - ' -s '
        - 'cmd'
  selection_service:
    Image|endswith: '\sc.exe'
    CommandLine|contains|all:
      - '\\'
      - 'create'
      - 'binpath'
  condition: 1 of selection_*
falsepositives:
  - Enterprise software deployment (SCCM, PDQ)
  - Legitimate administrative tooling
level: high
tags:
  - attack.lateral_movement
  - attack.t1569.002
  - attack.t1021.002
---
title: EMPERADOR-Style Initial Access - Suspicious Child Process of VPN or Remote Access Infrastructure
id: 9f2a1c4e-7b3d-4e1a-a8c5-emp3r4d0r003
description: Detects shells and scripting engines spawned by VPN gateway, firewall management, or remote access service processes - a strong indicator of perimeter device exploitation (consistent with Check Point / Cisco FMC class CVEs).
status: experimental
date: 2026/10/31
author: Security Arsenal Threat Intel
logsource:
  category: process_creation
  product: windows
detection:
  selection_parent:
    ParentImage|endswith:
      - '\svchost.exe' # RAS/VPN service context - tune to your VPN agent process names
      - '\vpnagent.exe'
      - '\cscoe.exe'
      - '\fortisslvpn.exe'
      - '\openvpn.exe'
      - '\pan_gp_hmp.exe'
  selection_child:
    Image|endswith:
      - '\cmd.exe'
      - '\powershell.exe'
      - '\pwsh.exe'
      - '\wscript.exe'
      - '\cscript.exe'
      - '\mshta.exe'
      - '\rundll32.exe'
  condition: all of selection_*
falsepositives:
  - VPN client diagnostic scripts (rare)
level: critical
tags:
  - attack.initial_access
  - attack.t1190
  - attack.t1133

The KQL query below hunts the pre-ransomware staging window: accounts that suddenly appear on multiple hosts combined with service creation or archive-tool execution — the lateral-movement-plus-staging pattern that precedes detonation.

// EMPERADOR-style pre-ransomware staging hunt: new cross-host account activity + staging tooling
// Lookback: 7 days. Tune KnownGoodAccounts and DeploymentTools for your environment.
let Lookback = 7d;
let NewAccountHosts =
    DeviceLogonEvents
    | where Timestamp > ago(Lookback)
    | where LogonType in ("Network", "RemoteInteractive", "Interactive")
    | where AccountName !startswith "ANONYMOUS" and AccountName !endswith "$"
    | summarize HostCount = dcount(DeviceName), Hosts = make_set(DeviceName), FirstSeen = min(Timestamp) by AccountName
    | where HostCount >= 5  // one account touching 5+ hosts in 7 days
    | order by HostCount desc;
let StagingActivity =
    DeviceProcessEvents
    | where Timestamp > ago(Lookback)
    | where FileName in~ ("rar.exe","7z.exe","7za.exe","winrar.exe","psexec.exe","psexesvc.exe","vssadmin.exe","sc.exe","wmic.exe","nltest.exe","net.exe","adfind.exe","sharpview.exe")
       or ProcessCommandLine has_any ("delete shadows","shadowcopy delete","resize shadowstorage","/domain_trusts","group \"Domain Admins\"")
    | project Timestamp, DeviceName, FileName, ProcessCommandLine, InitiatingProcessAccountName, InitiatingProcessFileName;
StagingActivity
| join kind=inner (NewAccountHosts) on $left.InitiatingProcessAccountName == $right.AccountName
| project Timestamp, DeviceName, AccountName, HostCount, FileName, ProcessCommandLine, InitiatingProcessFileName
| order by Timestamp desc;

The script below is a rapid-response triage script for any environment in scope: it surfaces RDP exposure, scheduled tasks created in the last 7 days, and the state of Volume Shadow Copies — three of the fastest checks for this actor's playbook.

# EMPERADOR Rapid Triage - run elevated on suspect hosts / via your RMM across the estate
# Checks: RDP exposure, scheduled tasks added in last 7 days, VSS health, suspicious services
$Report = @()

Write-Host "[1] RDP Exposure Check" -ForegroundColor Cyan
$rdp = Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server' -Name fDenyTSConnections -ErrorAction SilentlyContinue
$rdpEnabled = ($rdp.fDenyTSConnections -eq 0)
$nla = (Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp' -Name UserAuthentication -ErrorAction SilentlyContinue).UserAuthentication
$Report += [pscustomobject]@{Check='RDP Enabled'; Result=$rdpEnabled; Detail="NLA=$(if($nla -eq 1){'On'}else{'OFF - RISK'})"}

Write-Host "[2] Scheduled Tasks Created/Modified in Last 7 Days" -ForegroundColor Cyan
$cutoff = (Get-Date).AddDays(-7)
Get-ScheduledTask | ForEach-Object {
    $info = $_ | Get-ScheduledTaskInfo -ErrorAction SilentlyContinue
    $xml = Export-ScheduledTask -TaskName $_.TaskName -TaskPath $_.TaskPath -ErrorAction SilentlyContinue
    if ($xml -match '<Date>([^<]+)</Date>') {
        $created = [datetime]$Matches[1]
        if ($created -gt $cutoff) {
            $action = ($_.Actions | ForEach-Object { "$($_.Execute) $($_.Arguments)" }) -join '; '
            $Report += [pscustomobject]@{Check='New Scheduled Task'; Result=$_.TaskName; Detail="Created $created | Runs: $action"}
        }
    }
}

Write-Host "[3] Volume Shadow Copy Health" -ForegroundColor Cyan
$shadows = Get-CimInstance Win32_ShadowCopy -ErrorAction SilentlyContinue
$Report += [pscustomobject]@{Check='VSS Snapshots Present'; Result=($null -ne $shadows); Detail="Count: $(@($shadows).Count)"}
$vssSvc = Get-Service VSS -ErrorAction SilentlyContinue
$Report += [pscustomobject]@{Check='VSS Service State'; Result=$vssSvc.Status; Detail="StartType: $($vssSvc.StartType)"}

Write-Host "[4] Suspicious Recently Installed Services" -ForegroundColor Cyan
Get-CimInstance Win32_Service | Where-Object {
    $_.PathName -match 'Temp|AppData|ProgramData' -and $_.State -eq 'Running'
} | ForEach-Object {
    $Report += [pscustomobject]@{Check='Service in Writable Path'; Result=$_.Name; Detail=$_.PathName}
}

$Report | Format-Table -AutoSize | Out-String -Width 300 | Write-Host
$out = "$env:TEMP\emperador_triage_$(hostname)_$(Get-Date -Format yyyyMMdd_HHmm).csv"
$Report | Export-Csv $out -NoTypeInformation
Write-Host "Report saved: $out" -ForegroundColor Green

Incident Response Priorities

T-minus detection checklist (before encryption fires)

1. Perimeter anomalies: new or unexpected admin sessions on VPN concentrators, firewalls, or management planes (Check Point, Cisco FMC) — especially sessions from unusual geographies or outside change windows.
2. Recon bursts: nltest /dclist, net group "Domain Admins" /domain, AdFind/SharpView execution, BloodHound-style LDAP enumeration.
3. Staging artifacts: mass archive creation (.rar/.7z in user or temp directories), archives with double extensions, unusual outbound transfer volume to cloud storage or bulletproof hosts (watch egress to MEGA, file.io, Rclone endpoints, unknown SFTP).
4. Lateral movement precursors: PsExec service installs (PSEXESVC), remote sc create, new scheduled tasks on servers, abnormal WMI (wmiprvse.exe spawning shells).
5. Anti-recovery signals: vssadmin delete shadows, bcdedit ... recoveryenabled no, backup console logins from non-backup-admin accounts, deletion or corruption of backup catalogs.

Assets this profile of actor prioritizes for exfiltration

• Professional services: client engagement files, privileged legal documents, financial records, contracts — maximum extortion leverage per gigabyte.
• Manufacturing: ERP exports, IP/CAD files, HR and payroll data, and OT-adjacent documentation that amplifies operational-disruption fear.
• Retail: customer PII and payment-adjacent data (regulatory pressure multiplier under GDPR for EU entities).
• Cross-sector: executive and legal-team mailboxes, insurance-policy documents (used to calibrate demands), and anything under NDA.

Containment actions, ordered by urgency

1. Isolate, don't nuke: network-quarantine suspected hosts via EDR; preserve memory and disk for forensics before any reimage.
2. Kill the access path: disable compromised accounts, force credential resets (krbtgt twice if domain-wide), revoke active sessions/tokens, and take the exploited perimeter device offline.
3. Protect the backups: verify backup infrastructure is isolated/immutable and out of the blast radius before doing anything that alerts the actor.
4. Block staging egress: emergency egress filtering on archive-hosting and exfil domains; alert on large outbound transfers.
5. Engage counsel and regulator early: for CH/IT entities, GDPR and Swiss nFADP notification clocks may apply if the claim is substantiated — do not wait for the leak countdown to decide.

Hardening Recommendations

Immediate (24 hours)

• Patch the perimeter first: validate remediation of CVE-2026-50751 (Check Point Security Gateway) and CVE-2026-20316 (Cisco Secure FMC) on all internet-facing appliances — these are confirmed ransomware-exploited and match this actor's assessed access profile. Then verify CVE-2026-59310 (vCenter) and CVE-2026-63077 (TeamCity).
• Enforce phishing-resistant MFA on all remote access (VPN, RDP gateways, OWA) — hardware keys or number-matching at minimum.
• Disable or restrict RDP from the internet entirely; require VPN + MFA for any administrative access.
• Block macro execution from internet-sourced Office documents via GPO/Intune (Mark-of-the-Web enforcement).
• Deploy the Sigma and KQL content above to your SIEM and confirm VSS-deletion and PsExec alerts actually page a human.
• Audit developer tooling for Nx Console supply-chain exposure (CVE-2026-48027) — engineering and consulting firms especially.

Short-term (2 weeks)

• Segment backup infrastructure onto isolated networks with immutable, offline, or WORM-protected copies; test a restore this quarter, not during an incident.
• Tiered administration: implement a PAW/tier-0 model so domain-admin credentials never touch user workstations — this is what converts a foothold into total domain compromise.
• Egress control and DLP: restrict outbound traffic to known business destinations; alert on archive uploads and large transfers from servers that don't normally egress.
• Lateral-movement friction: disable PsExec-style remote service creation where not operationally required (or wrap in allow-listing), restrict WMI to admin tiers, and enable LSA protection.
• Attack surface management: continuous external scanning for exposed RDP/VPN/management interfaces — the same view the access brokers sell.
• Tabletop the double-extortion scenario: legal, comms, and IR should rehearse a "data leaked but systems restored" scenario, because backups alone do not resolve this threat model.

Related Resources

Security Arsenal Incident Response

Managed SOC & MDR Services

AlertMonitor Threat Detection

From The Dark Side Intel Hub