Konni

Overview

Executive Summary

Infection Vector and Technical Capabilities

• System Profiling and Data Theft: Konni immediately profiles the compromised system, mapping connected drives, harvesting browser credentials, and systematically archiving specific file types (e.g., `.doc`, `.pdf`, `.txt`) into ZIP or CAB files for exfiltration.
• Advanced Evasion: The RAT employs numerous anti-analysis techniques. It checks for the presence of virtualization (VMware, VirtualBox) or sandbox environments and will terminate execution if detected. It often sideloads malicious DLLs via legitimate, signed Windows executables to bypass EDR.
• C2 Infrastructure: Konni frequently utilizes compromised legitimate websites or free web hosting services as Command and Control (C2) proxies, making network traffic appear benign and complicating network-based detection.

Threat Assessment

Incident Response and Remediation

• Forensic Triage and Containment: Do not immediately wipe the machine. Isolate the endpoint. Incident Response (IR) teams must capture volatile memory (RAM) to analyze the memory-resident modules and extract C2 indicators before they are lost.
• Hunt for Lateral Movement: The presence of Konni implies a targeted breach. A comprehensive enterprise-wide threat hunt must be initiated to identify all compromised assets and secondary backdoors deployed by the APT group.
• Complete Architecture Review: Remediation requires a full rebuild of the compromised endpoints from clean baselines, a complete reset of the Active Directory environment, and a fundamental review of email security and macro execution policies.

Known aliases

Threat reports may refer to this family under multiple names:

• RAT.Konni
• APT.Konni
• Trojan.Win32.Konni

MITRE ATT&CK Techniques

Observed techniques used by this family, mapped to our technical analysis hubs and the official MITRE ATT&CK framework:

Tactical Mitigations

Based on the techniques used by this family, consider the following defensive strategies:

• T1059.003: Restrict execution of Windows Command Shell (cmd.exe) and block unauthorized batch scripts.
• T1071.001: Implement web filtering and SSL/TLS inspection to detect malicious command and control (C2) traffic hiding in HTTP/HTTPS.
• T1566.001: Scan email attachments for malicious macros, scripts, or suspicious archive files.

MITRE D3FEND™ Defensive Countermeasures

Defensive techniques mapped to counter the offensive tradecraft observed in this family (via the MITRE D3FEND matrix):

Tiered Detection Rules (Cisco CAIRN Model)

Modern threat detection requires multi-layered rule engineering. We classify detections into three operational tiers based on signal fidelity:

rule MALWARE_WIN_KONNI_T1_ARTIFACT {
    meta:
        description = "Tier 1 Primitive Artifact: Raw string matches for Konni"
        tier = "T1 - Primitive Artifact"
        confidence = "Low-Medium (Fast Triage)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        $s1 = "konni" ascii wide nocase
        $s2 = "rat.konni" ascii wide nocase
        $s3 = "apt.konni" ascii wide nocase
        $s4 = "trojan.win32.konni" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

title: SystemHelpDesk Detection - Konni (Trojan) Execution & Triage
id: cae796f9-d036-5302-b7d2-ced2f426fd9f
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
  with the Konni malware family. Detects suspicious execution from temporary user
  directories with hidden window flags and background transfer utilities.
references:
- https://malware-families-catalog.systemhelpdesk.com/families/konni
- https://malware-families-catalog.systemhelpdesk.com/defensive/downloader-dropper-protection
- https://malware-families-catalog.systemhelpdesk.com/
author: Ricky Jordan, Lead Threat Intelligence Analyst, SystemHelpDesk MSP
date: '2026-10-14'
modified: '2026-10-14'
tags:
- attack.trojan
- author.ricky-jordan
- source.systemhelpdesk-mfc
- attack.t1566_001
- attack.t1059_003
- attack.t1071_001
- attack.t1114
logsource:
  category: process_creation
  product: windows
detection:
  selection_process:
    Image|endswith:
    - \cmd.exe
    - \powershell.exe
    - \cscript.exe
    - \wscript.exe
    CommandLine|contains:
    - AppData\Local\Temp
    - -WindowStyle Hidden
    - /e:jscript
    - bitsadmin /transfer
  condition: selection_process
falsepositives:
- Legitimate enterprise administrative scripts during approved change windows
- Authorized IT software deployment utilities and backup management agents
level: medium

rule MALWARE_WIN_KONNI_T3_ATTRIBUTION {
    meta:
        description = "Tier 3 Attribution Fingerprint: Heuristic detection for Konni tradecraft"
        tier = "T3 - Attribution Fingerprint"
        confidence = "High (Confirmed Family Signature)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        // Core family identifier & heuristic payload signatures
        $attrib_str = "konni" ascii wide nocase
        $pe_magic = "MZ" ascii
        $net_marker = "http" ascii nocase
    condition:
        uint16(0) == 0x5a4d and ($attrib_str and $net_marker) and filesize < 15MB
}

Containment & Response Steps

Ordered checklist for responders. Adapt to your environment and engage professional support for active incidents.

1. Sever network connectivity for the flagged endpoint to terminate persistent command-and-control (C2) communication channels and stop Konni from retrieving secondary stage payloads.
2. Capture process memory triage to detect and terminate malicious threads injected by Konni into legitimate system processes such as explorer.exe or svchost.exe.
3. Audit Windows Registry Run keys (HKCU\Software\Microsoft\Windows\CurrentVersion\Run) and Task Scheduler entries to locate and purge Konni persistence hooks.
4. Deploy updated enterprise EDR detection signatures and conduct an out-of-band endpoint scan to isolate dropped binaries and staged payloads.
5. Rotate all credentials, domain user passwords, and session cookies active on the system during the Konni execution timeframe.

What to Avoid

Common mistakes during response to this family that can destroy evidence, spread the infection, or worsen recovery.

1. Do not assume the incident is resolved simply because an antivirus tool removed the initial Konni dropper; always verify that secondary payloads and persistence hooks have been eradicated.
2. Avoid logging in with Domain Admin or privileged credentials on a machine suspected of running Konni until memory triage is complete.
3. Do not delay host isolation; automated lateral movement and credential dumping can occur within minutes of initial execution.

References & External Analysis

• Search "konni" on VirusTotal (External Analysis)
• Search "konni" on Any.Run (Sandbox Sandbox)
• Search "konni" on MalwareBazaar (Malware Samples)

Frequently Asked Questions

Related Threats (Category: Trojan)

Explore other documented threats in the same operational category:

• Magania
• Neutrinopos
• Antidenial
• Hostspatcher
• Xxybzx
• Mudrop
• Synrat
• Scarcruft

Machine-readable

Get this profile as JSON: https://malware-families-catalog.systemhelpdesk.com/api/konni.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.