Classification: TLP:CLEAR | Publication Date: 2026-10-25 | Source: ransomware.live leak-site monitoring | Nature of data: Unverified threat-actor claims

EMPERADOR Ransomware Gang: 6 New Leak-Site Listings Across Technology, Energy, Manufacturing & Food Production

Executive Summary

Between 2026-10-23 and 2026-10-25, the EMPERADOR ransomware operation published six new listings on its dark web leak site, naming organizations across four sectors — Technology, Agriculture and Food Production, Energy & Utilities, and Manufacturing — and three countries (Belgium, Germany, United States). All six listings were independently observed by a second leak-site crawler, confirming the gang made these claims; none of the listings confirm that any named organization was breached. Named organizations include AB InBev (BE), Frommann Energie GmbH (DE), Phoenix S&S GmbH (DE), JS Constructor, INC (US), AyT COMPUTERS SRL, and B2Chat.

The 72-hour posting cadence, the pivot toward critical-infrastructure-adjacent sectors (Energy & Utilities), and the cross-Atlantic spread are consistent with a deliberate escalation cycle. Defenders in these sectors should treat this as a heightened-threat window and run the detection content below regardless of whether any individual claim is ever substantiated.

Sourcing & Verification

6 of 6 listings were independently observed by a second leak-site crawler (MULTI-SOURCE tier). 0 listings appear on a single source only.
Multi-source corroboration means two independent crawlers saw the gang post the claim. Inclusion in this briefing reflects the threat actor's claim only and is NOT confirmation of a breach. No corroboration tier in our data confirms a breach — only the named organization or its regulator can do that.
A named organization may dispute a listing. A denial is likewise not proof the claim is false: disclosure obligations vary by jurisdiction and sector, and not every incident is reportable. Neither silence nor denial settles the question.
Security Arsenal will publish corrections as warranted and welcomes contact from any named organization at security@securityarsenal.com.

Threat Actor Profile — EMPERADOR

EMPERADOR is an extortion-focused ransomware operation tracked via its dedicated leak site (DLS) on the Tor network. Attribution details remain limited; the following reflects current analyst assessment and should be treated as evolving.

Aliases: No widely adopted aliases confirmed. Some tracking communities reference the operation under variant spellings; treat third-party naming as provisional.
Operating model: Assessed as a Ransomware-as-a-Service (RaaS) program with a small core team managing the encryptor, leak site, and negotiation infrastructure, and a rotating affiliate pool conducting intrusions. The diversity of sectors and geographies in a single posting wave supports an affiliate-driven model rather than a closed, single-operator group.
Ransom demands: No consistent public figure. Based on comparable mid-tier RaaS operations, demands are typically calibrated to victim revenue, ranging from low six figures for SMBs to seven figures for large enterprises. Double-extortion pressure (pay or we publish) is the primary lever.
Initial access methods (assessed): Consistent with the broader RaaS ecosystem: (1) exploitation of internet-facing edge devices and remote access services (VPN concentrators, firewalls, RDP), (2) phishing with macro- or script-based loaders, (3) purchased access from initial access brokers (IABs), and (4) abuse of exposed CI/CD and virtualization management planes.
Double extortion: Yes. The leak site is the enforcement mechanism; listings typically appear after encryption events, meaning a listing usually indicates the operator believes it already holds exfiltrated data.
Dwell time: Sector-typical dwell time for comparable groups runs 3–14 days from initial access to detonation, with exfiltration and staging in the final 48–72 hours. The clustered posting dates here suggest near-simultaneous detonation or a deliberate batch-publishing tactic.

Current Campaign Analysis

Sectors being targeted

From the six listings: Technology (2: AyT COMPUTERS SRL, B2Chat), Manufacturing (2: Phoenix S&S GmbH, JS Constructor, INC), Energy & Utilities (1: Frommann Energie GmbH), Agriculture and Food Production (1: AB InBev). The inclusion of an energy-sector target alongside food production signals willingness to name critical-infrastructure-adjacent organizations, which increases regulatory and reputational pressure on alleged victims.

Geographic concentration

Germany (2), Belgium (1), United States (1), plus two listings with undisclosed/unclear geographies (AyT COMPUTERS SRL, B2Chat). The European weighting aligns with groups whose affiliates exploit EU edge infrastructure and who time postings around EU disclosure regimes for leverage.

Victim profile

The spread is bimodal: one large multinational (AB InBev) alongside mid-market and SMB organizations (a regional energy firm, a construction manufacturer, a chat software provider). This is the classic RaaS affiliate pattern — affiliates monetize whatever access they obtain, and the leak site aggregates everything from SMBs to household names.

Posting frequency / escalation

Six listings in 72 hours (2026-10-23 → 2026-10-25) is a compressed batch. Two interpretations: (a) multiple affiliates detonated concurrently and the operator published in a batch, or (b) deliberate batching for psychological effect and press coverage. Either way, batch-publishing historically precedes either a quiet period or a larger second wave.

CVE exposure — hypothesis only

We have no evidence linking any specific CVE to any specific named organization above. However, EMPERADOR-adjacent RaaS tradecraft conventionally exploits the following CISA KEV entries, all confirmed exploited by ransomware operators at the sector level. Defenders in the targeted sectors should treat these as priority patch/verify items:

CVE-2026-50751 — Check Point Security Gateway improper authentication (IKEv1). Edge-device compromise is the single most common ransomware entry point.
CVE-2026-20316 — Cisco Secure Firewall Management Center hard-coded password. Management-plane compromise cascades to all managed firewalls.
CVE-2026-59310 — VMware vCenter path traversal. Virtualization management-plane access enables mass encryption of entire ESXi fleets — the highest-impact ransomware scenario.
CVE-2026-63077 — JetBrains TeamCity deserialization. CI/CD compromise yields build secrets, code-signing material, and lateral-movement paths.
CVE-2026-48027 — Nx Console embedded malicious code. Developer-workstation supply-chain vector.

Detection Engineering

The following content targets the tradecraft EMPERADOR-type affiliates use in the pre-encryption window: remote execution for lateral movement, staging/compression for exfiltration, and backup destruction immediately before detonation.

YAML

---
title: PsExec-Style Remote Service Creation and ADMIN$ Execution
id: 8f3a1c2e-5b7d-4a1f-9c2e-emperador001
status: experimental
description: Detects remote service installation and execution patterns consistent with PsExec-style lateral movement used by ransomware affiliates pre-detonation.
author: Security Arsenal Threat Intelligence
date: 2026/10/25
references:
  - https://securityarsenal.com/darkside
logsource:
  category: process_creation
  product: windows
detection:
  selection_img:
    Image|endswith:
      - '\PSEXESVC.exe'
      - '\paexec.exe'
      - '\remcom.exe'
  selection_parent:
    ParentImage|endswith: '\services.exe'
  selection_cli:
    CommandLine|contains:
      - '\\ADMIN$\\'
      - '\\IPC$'
  condition: selection_img or (selection_parent and selection_cli)
falsepositives:
  - Legitimate admin tooling (SCCM, PDQ Deploy) — baseline service names in your environment
level: high
tags:
  - attack.lateral_movement
  - attack.t1021.002
  - attack.t1569.002
---
title: WMI Remote Process Execution by Non-System Account
id: 8f3a1c2e-5b7d-4a1f-9c2e-emperador002
status: experimental
description: Detects WmiPrvSE.exe spawning command interpreters or scripting hosts — a hallmark of WMI-based lateral movement and tooling deployment by ransomware operators.
author: Security Arsenal Threat Intelligence
date: 2026/10/25
logsource:
  category: process_creation
  product: windows
detection:
  selection_parent:
    ParentImage|endswith: '\WmiPrvSE.exe'
  selection_child:
    Image|endswith:
      - '\cmd.exe'
      - '\powershell.exe'
      - '\pwsh.exe'
      - '\wscript.exe'
      - '\cscript.exe'
      - '\rundll32.exe'
      - '\regsvr32.exe'
  filter_system:
    User|contains: 'SYSTEM'
    CommandLine|contains: 'wbem'
  condition: selection_parent and selection_child and not filter_system
falsepositives:
  - Enterprise management agents (SCCM, monitoring) executing via WMI
level: high
tags:
  - attack.lateral_movement
  - attack.t1047
---
title: Pre-Encryption Staging — Mass Compression, Exfil Tools, and Shadow Copy Deletion
id: 8f3a1c2e-5b7d-4a1f-9c2e-emperador003
status: experimental
description: Detects the classic pre-detonation triad — archive compression tools, cloud exfiltration binaries, and Volume Shadow Copy deletion — observed in the final 48-72 hours of ransomware intrusions.
author: Security Arsenal Threat Intelligence
date: 2026/10/25
logsource:
  category: process_creation
  product: windows
detection:
  selection_vss:
    CommandLine|contains:
      - 'vssadmin delete shadows'
      - 'vssadmin Delete Shadows'
      - 'wmic shadowcopy delete'
      - 'bcdedit'
      - 'recoveryenabled no'
      - 'wbadmin delete catalog'
  selection_exfil:
    Image|endswith:
      - '\rclone.exe'
      - '\megasync.exe'
      - '\FileZilla.exe'
      - '\winscp.exe'
  selection_compress:
    CommandLine|contains:
      - ' -p'
      - 'a -t7z'
      - 'a -trar'
    Image|endswith:
      - '\7z.exe'
      - '\7za.exe'
      - '\rar.exe'
      - '\winrar.exe'
  condition: selection_vss or selection_exfil or (selection_compress)
falsepositives:
  - Backup administrators, legitimate archival jobs, managed file transfer tooling
level: critical
tags:
  - attack.impact
  - attack.t1490
  - attack.t1560.001
  - attack.exfiltration
  - attack.t1048

The following Microsoft Sentinel hunt stitches the triad together: remote execution, staging tooling, and backup destruction on the same host or by the same account within a 24-hour window — the strongest pre-detonation signal available.

KQL — Microsoft Sentinel / Defender

// EMPERADOR-pattern hunt: lateral movement + staging + backup destruction co-occurrence
let Window = 24h;
let Lateral = SecurityEvent
| where TimeGenerated > ago(7d)
| where EventID == 4688
| where Process has_any ("PSEXESVC.exe", "WmiPrvSE.exe") or NewProcessName has_any ("psexec", "paexec", "wmic")
| summarize LateralCount=count(), FirstLateral=min(TimeGenerated) by Computer, Account;
let Staging = DeviceProcessEvents
| where TimeGenerated > ago(7d)
| where FileName in~ ("rclone.exe", "7z.exe", "7za.exe", "rar.exe", "winscp.exe")
   or ProcessCommandLine has_any ("a -t7z", "a -trar", "copy ", "sync ")
| summarize StagingCount=count(), FirstStaging=min(TimeGenerated) by DeviceName, InitiatingProcessAccountName;
let VssKill = DeviceProcessEvents
| where TimeGenerated > ago(7d)
| where ProcessCommandLine has_any ("vssadmin delete shadows", "shadowcopy delete", "recoveryenabled no", "wbadmin delete")
| summarize VssEvents=count(), FirstVss=min(TimeGenerated) by DeviceName, InitiatingProcessAccountName;
Lateral
| join kind=inner (Staging | project-rename Computer=DeviceName, Account=InitiatingProcessAccountName) on Computer, Account
| join kind=leftouter (VssKill | project-rename Computer=DeviceName) on Computer
| where FirstStaging between (FirstLateral .. (FirstLateral + Window))
| project Computer, Account, FirstLateral, FirstStaging, FirstVss, LateralCount, StagingCount, VssEvents
| extend RiskScore = (LateralCount + StagingCount + (VssEvents * 5))
| order by RiskScore desc;

Rapid-response triage script: enumerate scheduled tasks created in the last 7 days (persistence), check RDP exposure, and verify shadow copy health — the three fastest indicators of an in-progress pre-ransomware staging phase.

PowerShell

# EMPERADOR rapid triage: persistence, RDP exposure, shadow copy integrity
# Run as Administrator on suspect hosts or via your EDR remote shell
$since = (Get-Date).AddDays(-7)

Write-Output '=== Scheduled tasks created/modified in last 7 days ==='
Get-ScheduledTask | ForEach-Object {
    $info = $_ | Get-ScheduledTaskInfo
    if ($_.Date -and ([datetime]$_.Date) -gt $since) {
        [PSCustomObject]@{
            TaskName = $_.TaskName
            TaskPath = $_.TaskPath
            Created  = $_.Date
            Action   = ($_.Actions | ForEach-Object { "$($_.Execute) $($_.Arguments)" }) -join '; '
        }
    }
} | Format-Table -AutoSize

Write-Output '=== Suspicious processes with network listeners (RDP/remote access exposure) ==='
$rdpEnabled = (Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server').fDenyTSConnections -eq 0
$rdpPort = (Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp').PortNumber
Write-Output ("RDP enabled: {0} | Port: {1}" -f $rdpEnabled, $rdpPort)
Get-NetTCPConnection -State Listen -LocalPort $rdpPort -ErrorAction SilentlyContinue |
    Select-Object LocalAddress, LocalPort, OwningProcess,
        @{N='Process';E={(Get-Process -Id $_.OwningProcess).ProcessName}}

Write-Output '=== Volume Shadow Copy status (deletion = pre-encryption indicator) ==='
$shadows = Get-CimInstance Win32_ShadowCopy -ErrorAction SilentlyContinue
if (-not $shadows) {
    Write-Output 'WARNING: No shadow copies present. Investigate vssadmin/wmic shadowcopy deletion events (Event ID 4688, Sysmon ID 1).'
} else {
    $shadows | Select-Object ID, InstallDate, VolumeName | Format-Table -AutoSize
}

Write-Output '=== Recent large archive creation (staging indicator, top 20 by size, last 7 days) ==='
Get-ChildItem -Path 'C:\Users','D:\' -Include *.7z,*.rar,*.zip -Recurse -ErrorAction SilentlyContinue |
    Where-Object { $_.LastWriteTime -gt $since -and $_.Length -gt 100MB } |
    Sort-Object Length -Descending | Select-Object -First 20 FullName, Length, LastWriteTime

Incident Response Priorities

T-minus detection checklist (before encryption fires)

Shadow copy deletion commands (vssadmin delete shadows, wmic shadowcopy delete, bcdedit ... recoveryenabled no) — the single most reliable T-minus indicator. Alert as critical.
New archive files >100MB in user/server shares created in the last 72 hours — staging for exfiltration.
Rclone/MEGA/WinSCP processes on servers that have no business running file-transfer tooling.
WmiPrvSE.exe spawning cmd/powershell across multiple hosts within hours — lateral movement in progress.
New services named like random 8-char strings or PSEXESVC on multiple hosts.
Mass file rename/read bursts on file servers (EDR telemetry) — encryption may already be starting.
Disabled AV/EDR services or new exclusions added via GPO or local policy.

Critical assets this gang profile historically prioritizes for exfiltration

Based on the sector mix claimed (energy, food production, manufacturing, technology): ERP and finance exports, HR/payroll databases, customer contracts, engineering/PLC documentation (energy and manufacturing victims), source code repositories and CI/CD secrets (technology victims), and executive mailbox archives. These are exfiltrated before encryption — by the time a listing appears, the operator claims to already hold the data.

Containment actions, ordered by urgency

Isolate, don't power off suspected staging hosts — preserve memory for forensics.
Disable compromised accounts identified in the KQL hunt output; force enterprise-wide credential reset for any account seen in lateral movement telemetry.
Block exfil egress at the proxy/firewall: rclone endpoints (MEGA, S3, Backblaze), uncommon cloud storage ASNs.
Snapshot and isolate hypervisors — if vCenter/ESXi is implicated, assume mass-encryption staging and segment management networks immediately.
Verify backup integrity and offline copies before any recovery planning; assume online backups are targeted.
Engage IR retainer and legal/comms early — if your organization appears on a leak site, the clock on regulatory and disclosure analysis starts at discovery, not at confirmation.

Hardening Recommendations

Immediate (24 hours)

Patch or mitigate the KEV entries above, prioritizing edge devices: CVE-2026-50751 (Check Point), CVE-2026-20316 (Cisco FMC), CVE-2026-59310 (vCenter). Confirm patch state by version check, not by change-ticket status.
Disable or ACL-restrict RDP from the internet; enforce VPN + MFA for all remote administration.
Deploy the Sigma rules above; set the shadow-copy-deletion rule to page on-call.
Audit scheduled tasks and services created in the last 14 days across servers.
Block rclone, MEGAsync, and unapproved file-transfer tooling via application control on servers.

Short-term (2 weeks)

Segment virtualization management planes (vCenter, backup consoles, hypervisor management interfaces) onto dedicated networks reachable only from jump hosts with phishing-resistant MFA.
Implement immutable/offline backups with a separate credential domain; test restoration of one critical system.
Tiered administration model: prevent domain-admin logon to workstations and member servers to break WMI/PsExec lateral movement paths.
Deploy deception tripwires: canary files and decoy admin credentials in shares likely to be staged.
CI/CD hardening for technology-sector exposure (TeamCity/CVE-2026-63077 class): isolate build agents, rotate all secrets stored in build systems, and alert on build-agent-initiated outbound connections.

Related Resources

Security Arsenal Incident Response Managed SOC & MDR Services AlertMonitor Threat Detection From The Dark Side Intel Hub

EMPERADOR Ransomware Gang: 6 New Leak-Site Listings Across Technology, Energy, Manufacturing & Food Production — Claims Analysis & Detection Rules