GigaWiper: Analysis and Defense Against the 2026 Modular Wiper Platform

On July 9, 2026, Microsoft Security published a detailed analysis of GigaWiper, a sophisticated and highly destructive threat representing an evolution in offensive cyber operations. Unlike traditional malware that focuses on a single objective, GigaWiper is a "Frankenstein" platform—a destructive unauthorized access mechanism assembled by combining code from multiple, previously separate malicious software families.

This amalgamation creates a versatile operational platform capable of unauthorized access (backdoor functionality), data wiping, and encryption-based destruction. For defenders, this presents a significant challenge: the threat inherits the evasion techniques and persistence mechanisms of its parent codebases while introducing new complexities in detection. This post provides a technical breakdown of GigaWiper and actionable intelligence to detect, contain, and remediate this threat.

Technical Analysis

GigaWiper is not merely a script but a compiled platform that integrates distinct functional modules:

1. Unauthorized Access Mechanism (Backdoor): Provides attackers with persistent remote control, likely utilizing C2 communication channels observed in related strains.
2. Wiping Module: Incorporates logic designed to destroy data on the endpoint, potentially targeting the Master Boot Record (MBR) or specific file systems.
3. Encryption Module: Engages in cryptographic operations designed to render data inaccessible, mimicking ransomware but without the intent of data recovery (pure destruction).

Attack Chain

Based on the architecture described by Microsoft, the attack chain typically follows this pattern:

1. Initial Access: While the initial vector may vary (phishing, exploitation of external services), the payload is executed on the target.
2. Assembly and Execution: The dropper assembles the components from different malware families in memory or on disk, effectively "building" the GigaWiper platform locally to evade static signature detection that might look for the original parent families.
3. Persistence: The backdoor component establishes persistence, often via Registry run keys or scheduled tasks.
4. Destruction: Upon a trigger (command-and-control signal or a specific date/time), the wiping and encryption modules execute simultaneously to maximize impact and prevent recovery.

Exploitation Status

Microsoft has confirmed active usage of this mechanism in the wild. Given its destructive nature, it is assessed as a high-severity threat to critical infrastructure and enterprise environments.

Detection & Response

Detecting GigaWiper requires looking for the convergence of its disparate capabilities. Since it incorporates wiping and encryption logic, we can detect the precursor behaviors often associated with these actions, such as the deletion of Volume Shadow Copies (common in wipers/ransomware) and the abuse of native utilities for destructive purposes.

SIGMA Rules

The following Sigma rules target the behavioral anomalies of GigaWiper, specifically focusing on the combination of system destruction and suspicious process spawning typical of modular malware.

---
title: GigaWiper Indicator - System Destruction via VSSAdmin
description: Detects attempts to delete Volume Shadow Copies using vssadmin, often a precursor to wiper activity as seen in GigaWiper campaigns.
id: 8a4b1c9d-2e5f-4a6b-9c7d-1e2f3a4b5c6d
status: experimental
references:
  - https://www.microsoft.com/en-us/security/blog/2026/07/09/gigawiper-anatomy-of-a-destructive-backdoor-assembled-from-multiple-malware/
author: Security Arsenal
date: 2026/07/09
tags:
  - attack.impact
  - attack.t1490
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    Image|endswith: '\vssadmin.exe'
    CommandLine|contains: 'delete shadows'
  condition: selection
falsepositives:
  - Legitimate system administration (rare)
level: high
---
title: GigaWiper Indicator - Suspicious Process Spawning Wiper Tools
description: Detects a suspicious parent process spawning common wiper tools (cipher, wbadmin, vssadmin), indicative of GigaWiper's multi-component payload execution.
id: 1a2b3c4d-5e6f-7a8b-9c0d-1e2f3a4b5c6d
status: experimental
references:
  - https://www.microsoft.com/en-us/security/blog/2026/07/09/gigawiper-anatomy-of-a-destructive-backdoor-assembled-from-multiple-malware/
author: Security Arsenal
date: 2026/07/09
tags:
  - attack.execution
  - attack.t1059
logsource:
  category: process_creation
  product: windows
detection:
  selection_tools:
    Image|endswith:
      - '\cipher.exe'
      - '\wbadmin.exe'
      - '\vssadmin.exe'
  filter_legit:
    ParentImage|contains:
      - '\Program Files\\'
      - '\System32\\'
  condition: selection_tools and not filter_legit
falsepositives:
  - Administrative scripts running from non-standard paths
level: high

KQL (Microsoft Sentinel / Defender)

This hunt query identifies potential GigaWiper activity by correlating process creation events that involve destructive system commands with network connections indicative of C2 beaconing.

let DestructiveCommands = dynamic(["delete shadows", "format", "wipe", "/c"]);
let SuspiciousParents = dynamic(["cmd.exe", "powershell.exe", "pwsh.exe"]);
DeviceProcessEvents
| where Timestamp > ago(7d)
| where ProcessCommandLine has_any (DestructiveCommands)
| where InitiatingProcessFileName in~ (SuspiciousParents) 
       or InitiatingProcessFileName !in~ ("svchost.exe", "services.exe", "explorer.exe")
| join kind=inner (
    DeviceNetworkEvents 
    | where Timestamp > ago(7d)
    | where RemotePort in (443, 80)  // Common C2 ports
    | summarize arg_max(Timestamp, *) by DeviceId, InitiatingProcessId
) on DeviceId, InitiatingProcessId
| project Timestamp, DeviceName, AccountName, ProcessCommandLine, InitiatingProcessFileName, RemoteUrl, RemoteIP

Velociraptor VQL

This Velociraptor artifact hunts for the presence of unsigned binaries in common persistence paths that may be the GigaWiper assembly components, and checks for the execution of backup deletion commands.

-- Hunt for GigaWiper components and destructive execution
SELECT 
  Pid,
  Name,
  Exe,
  Cmdline,
  Username,
  StartTime
FROM pslist()
WHERE Exe NOT IN sigarr(config.GoodBinaries)
  AND (Cmdline =~ "delete" OR Cmdline =~ "format")

UNION ALL

SELECT 
  FullPath,
  Size,
  Mtime,
  Atime
FROM glob(globs="C:\ProgramData\*.exe")
WHERE Mtime < now() - 24h 
  AND NOT IsSigned.SignatureState = "Valid"

Remediation Script (PowerShell)

Use this script to isolate the host, suspend suspicious processes associated with the attack chain, and verify the integrity of VSS services.

# GigaWiper Emergency Response Script
# Requires Administrator Privileges

Write-Host "[!] Starting GigaWiper Isolation and Remediation..." -ForegroundColor Cyan

# 1. Suspend suspicious processes often abused by GigaWiper modules
$MaliciousProcs = @("vssadmin.exe", "cipher.exe", "wbadmin.exe")
foreach ($proc in Get-Process | Where-Object { $MaliciousProcs -contains $_.ProcessName }) {
    Write-Host "[-] Suspending process: $($proc.ProcessName) (PID: $($proc.Id))" -ForegroundColor Yellow
    $proc.Suspend()
}

# 2. Check and Restore Volume Shadow Copy Service (VSS)
$vssService = Get-Service -Name VSS -ErrorAction SilentlyContinue
if ($vssService.Status -ne "Running") {
    Write-Host "[!] VSS Service is not running. Attempting to start..." -ForegroundColor Red
    Start-Service -Name VSS -ErrorAction SilentlyContinue
} else {
    Write-Host "[+] VSS Service is running." -ForegroundColor Green
}

# 3. Disable RDP to prevent lateral movement (Common in IR)
$rdpProperty = Get-ItemProperty -Path "HKLM:\System\CurrentControlSet\Control\Terminal Server" -Name "fDenyTSConnections" -ErrorAction SilentlyContinue
if ($rdpProperty.fDenyTSConnections -ne 1) {
    Write-Host "[+] Disabling RDP for containment..." -ForegroundColor Yellow
    Set-ItemProperty -Path "HKLM:\System\CurrentControlSet\Control\Terminal Server" -Name "fDenyTSConnections" -Value 1
    Disable-NetFirewallRule -DisplayGroup "Remote Desktop"
}

Write-Host "[+] Remediation script complete. Proceed to forensic triage." -ForegroundColor Green

Remediation

To effectively remediate a GigaWiper infection, follow these steps:

1. Immediate Isolation: Disconnect affected hosts from the network immediately to prevent the backdoor component from receiving further C2 instructions or spreading laterally.
2. Forensic Imaging: Since GigaWiper is destructive, do not reboot the server if possible. Capture a full memory dump and disk image to analyze the malware's assembly and identify the initial access vector.
3. Credential Reset: Assume that the backdoor component has exfiltrated credentials. Reset all credentials for accounts used on the affected machines, specifically domain admin accounts.
4. System Rebuild: Due to the destructive nature (wiping and encryption), do not attempt to clean the system. The safest and most reliable remediation path is to wipe the disk and re-image the machine from a known good "gold" image or backup.
5. Backup Verification: Ensure backups are immutable and have not been encrypted or deleted by the wiper component before initiating restoration.
6. Vendor Coordination: Refer to the official Microsoft Security Blog for the latest IOCs (Indicators of Compromise) and update your EDR policies accordingly.

Related Resources

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