Amber

Category: ransomware · Aliases: Ransom.Amber, Win32/Filecoder.Amber, Trojan-Ransom.Win32.Amber · Sample count (EMBER 2018): 1 · Enrichment: insufficient_information · Updated: 2026-07-02T07:07:00Z

Category: RansomwareActor: Unknown / CybercriminalIndustry: Global / OpportunisticMotivation: Opportunistic

Overview

Executive Summary

Amber is a sophisticated Ransomware family known for its advanced evasion techniques and aggressive encryption routines. First observed heavily targeting enterprises, Amber is designed to extort significant financial payments from victim organizations by crippling their digital infrastructure. It distinguishes itself by utilizing fileless execution techniques and employing a unique encryption payload that attempts to bypass behavioral analysis engines.

Infection Vector and Technical Capabilities

Amber is typically deployed manually by threat actors after they have achieved initial access (often via compromised RDP endpoints or stolen VPN credentials) and escalated privileges within the target network. Upon execution, Amber initiates a highly destructive attack sequence:

Reflective DLL Injection: A core defining feature of Amber is its use of reflective DLL injection. The main executable acts as a loader, unpacking the actual ransomware payload directly into memory (fileless execution) without ever writing the core malicious DLL to the hard drive, effectively bypassing many static antivirus scanners.
Anti-Analysis and Privilege Escalation: It heavily utilizes Windows API unhooking to blind EDR sensors. It also actively seeks to escalate privileges to `SYSTEM` level to ensure it can encrypt files restricted to administrators.
Volume Shadow Copy Deletion: Before encryption begins, it executes commands (`vssadmin.exe`, `wmic.exe`) to destroy local system backups and recovery points.
Encryption: It utilizes strong cryptography to encrypt documents, databases, images, and archives, usually appending a specific extension (e.g., `.amber`) and dropping ransom notes outlining the extortion demand.

Threat Assessment

An Amber ransomware infection is a critical security incident resulting in massive data loss and operational downtime. The use of reflective DLL injection makes it a highly evasive threat, often allowing it to execute its payload even on systems with active endpoint protection.

Incident Response and Remediation

Immediate Network Severance: The infected endpoint must be immediately disconnected from the corporate network to prevent the ransomware from propagating to mapped network drives and lateral systems.
Preserve Memory (Do Not Reboot): Because the core payload runs entirely in memory via DLL injection, capturing a forensic RAM image before powering down the machine is crucial for incident response analysis.
Eradication and Restoration: Paying the ransom is strongly discouraged. Eradication requires a complete bare-metal wipe of the infected systems and a full restoration from secure, air-gapped backups.

Known aliases

Threat reports may refer to this family under multiple names:

MITRE ATT&CK Techniques

This family has been observed using the following ATT&CK techniques: T1055.001 T1486 T1490 T1055

Generated Detections (Boilerplate)

These YARA and Sigma rules are auto-generated based on the family name and aliases. They must be heavily tuned before deployment in a production environment.

YARA Rule

rule MALWARE_WIN_AMBER {
    meta:
        description = "Detects Amber (ransomware)"
        author = "SystemHelpdesk Boilerplate Generator"
        date = "2026-07-06"
    strings:
        $s1 = "amber" ascii wide nocase
        $s2 = "ransom.amber" ascii wide nocase
        $s3 = "win32/filecoder.amber" ascii wide nocase
        $s4 = "trojan-ransom.win32.amber" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

Sigma Rule

title: Suspicious Amber Activity
id: 59548977279905234b7ed3b1710837f2
status: experimental
description: Detects generic indicators of the amber malware family.
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
        CommandLine|contains:
            - "*amber*"
            - "*ransom.amber*"
            - "*win32/filecoder.amber*"
            - "*trojan-ransom.win32.amber*"
    condition: selection
level: medium

References & External Analysis

Search "amber" on VirusTotal (External Analysis)

Frequently Asked Questions

How do I remove the Amber Ransomware from Windows?

Manual removal of Amber is highly discouraged as it may leave persistence mechanisms intact. We recommend disconnecting the device from the internet and utilizing a professional incident response service or enterprise-grade EDR software to conduct a full forensic sweep.

Is Amber a virus or a Ransomware?

Amber is classified as a Ransomware. Unlike traditional viruses that infect files, modern malware like Amber typically operates as a standalone payload designed to compromise systems, steal data, or deploy secondary stage implants.

What are the main symptoms of a Amber infection?

Symptoms of Amber can include unexpected system slowness, unauthorized outbound network traffic to unknown IP addresses, disabled security software, and suspicious background processes running from AppData or Temp directories.

Related Families (Category: ransomware)

Explore other malware families in the same category:

Protect Your Network Against Ransomwares

Want to prevent Amber and similar threats from compromising your organization? Read our comprehensive defensive guide: Ransomware Protection Guide.

Need help with an active incident? Published by the SystemHelpdesk team.

Machine-readable

Get this profile as JSON: https://jordan123234-malware-families-explorer.static.hf.space/api/amber.json

Ecosystem & Interactive Environments

This profile is part of the Malware Families Catalog, a public dataset of 2,899 malware families. The catalog is also published across our ecosystem: Hugging Face, Kaggle, Zenodo, Replit, StackBlitz, CodeSandbox, and CodePen.