Bladabindi

Overview

Bladabindi (universally recognized in the cybersecurity community as njRAT) is an infamous, widely proliferated remote access trojan originally authored by an individual operating under the moniker 'spar-key' (Naser Al Mutairi) in Kuwait. First appearing around 2012 and disseminated openly through Arabic underground hacking forums and YouTube tutorials, Bladabindi quickly became one of the most ubiquitous threat vectors in global cybercrime and targeted espionage. Authored in Microsoft .NET, Bladabindi features a full-featured graphical command console providing complete endpoint compromise: real-time keystroke logging, desktop and webcam video surveillance, microphone eavesdropping, password extraction from web browsers and messaging clients, dynamic process manipulation, registry manipulation, and interactive command execution. The malware became notorious for its aggressive propagation across enterprise USB drives using malicious .lnk shortcuts, dynamic DNS infrastructure for command-and-control, and widespread weaponization by advanced persistent threat (APT) groups across the Middle East, North Africa, and Eastern Europe. In June 2014, Microsoft's Digital Crimes Unit and the Federal Bureau of Investigation (FBI) executed 'Operation Flash'—a high-profile federal civil and criminal action seizing 22 dynamic DNS domains hosted by No-IP that were utilized by Bladabindi and Jenxcus operators to control millions of compromised endpoints.

Known aliases

Threat reports may refer to this family under multiple names:

• njRAT
• Bladabindi
• Njw0rm
• Jenxcus

Threat Actor Attribution

Attribution is probabilistic, not a science. Each link below states its confidence level and the evidence behind it.

• spar-key (Author) / Weaponized across Middle Eastern & Global APTs High confidence
  Basis: Originally authored by Kuwaiti developer 'spar-key'. Prominently utilized in targeted espionage campaigns by Middle Eastern threat groups, Syrian Electronic Army affiliates, and thousands of independent cybercrime operators. [source]

Family Pedigree & Lineage

Malware authors regularly fork and iterate upon existing codebases. Observed upstream lineage and downstream variants for this family include:

Known Derivatives & Downstream Variants: Njrat V0.6.4 · Njrat V0.7D · Njw0Rm · Limerat

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:

• T1056.001: Implement Endpoint Detection and Response (EDR) to monitor for suspicious API calls related to keystroke interception. Enforce Multi-Factor Authentication (MFA) to render stolen passwords useless.
• T1059.003: Restrict execution of Windows Command Shell (cmd.exe) and block unauthorized batch scripts.
• T1125: Restrict access to local camera or microphone APIs. Utilize endpoint protection that monitors hardware access.

MITRE D3FEND™ Defensive Countermeasures

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

Exploited Vulnerabilities (CVEs)

This malware family is documented weaponizing the following common vulnerabilities and exposures:

• CVE-2013-0074 — In-depth exploitation analysis and catalog intelligence (NIST NVD ↗).
• CVE-2014-1761 — In-depth exploitation analysis and catalog intelligence (NIST NVD ↗).

Command & Control (C2) and Network Profile

How this family talks to its operators. C2 traffic can often identify a family even when its code and configuration are hard to analyse. Ports and patterns are historical and change between campaigns, so use them as hunting leads rather than block-only rules.

Network detection ideas

• Detect outbound raw TCP traffic on ports 1177, 5552, or 5555 containing pipe-delimited system beacons
• Block dynamic DNS hostnames matching known njRAT infrastructure signatures
• Flag .NET executables spawning child processes like cmd.exe or powershell.exe from AppData or Temp

Sources: MITRE ATT&CK S0038: njRAT / Bladabindi, CISA / US-CERT Alert TA14-182A (Microsoft Operation Flash)

Indicators of Compromise

Public indicators drawn from CISA advisories and vendor reporting. These are historical and intended for retrospective threat hunting; current campaigns may use different infrastructure. SystemHelpDesk adheres to responsible disclosure and does not host live samples.

File hashes (SHA-256, sample)

Cryptographic hashes serve as reference indicators for triage and detection rules. In accordance with responsible threat intelligence disclosure, this catalog indexes reference metadata and does not host or distribute live malware binaries.

• d8c47b59e4b6c31165a6f8ff5a3b2b4bc3c4b125ebf91b702ec943ecdae448b1
• e50e9eb7b372f8832a58b95886d3e877f0c13bcda026ad9a8264d84ec4f3319f

Delivery vectors

• Malicious attachments in spear-phishing emails claiming to be invoices, software cracks, or regional news
• Worm propagation across removable USB storage devices using disguised .lnk shortcuts

Persistence mechanisms

• Registry Run key in HKCU\Software\Microsoft\Windows\CurrentVersion\Run pointing to payload in %APPDATA%
• Scheduled tasks executing hidden .vbs or .exe payloads from %TEMP% directory

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_BLADABINDI_T1_ARTIFACT {
    meta:
        description = "Tier 1 Primitive Artifact: Raw string matches for Bladabindi"
        tier = "T1 - Primitive Artifact"
        confidence = "Low-Medium (Fast Triage)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        $s1 = "bladabindi" ascii wide nocase
        $s2 = "njrat" ascii wide nocase
        $s3 = "bladabindi" ascii wide nocase
        $s4 = "njw0rm" ascii wide nocase
        $s5 = "jenxcus" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

title: SystemHelpDesk Detection - Bladabindi (Rat) Execution & Triage
id: b11014f9-d0b8-502c-a361-d0d2147fee48
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
  with the Bladabindi malware family. Detects unauthorized persistence creation via
  Windows Registry Run keys, scheduled tasks, and privilege escalation indicative
  of RAT installations.
references:
- https://malware-families-catalog.systemhelpdesk.com/families/bladabindi
- https://malware-families-catalog.systemhelpdesk.com/defensive/backdoor-rat-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.rat
- author.ricky-jordan
- source.systemhelpdesk-mfc
- attack.t1056_001
- attack.t1125
- attack.t1123
- attack.t1059_003
- attack.t1547_001
logsource:
  category: process_creation
  product: windows
detection:
  selection_process:
    Image|endswith:
    - \reg.exe
    - \schtasks.exe
    - \cmd.exe
    - \powershell.exe
    CommandLine|contains:
    - \CurrentVersion\Run
    - /create /tn
    - bypass -enc
    - net user /add
    - net localgroup administrators
  condition: selection_process
falsepositives:
- Legitimate enterprise administrative scripts during approved change windows
- Authorized IT software deployment utilities and backup management agents
level: high

rule MALWARE_WIN_BLADABINDI_T3_ATTRIBUTION {
    meta:
        description = "Tier 3 Attribution Fingerprint: Heuristic detection for Bladabindi 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 = "bladabindi" 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. Isolate the host immediately from all corporate and guest networks.
2. Identify and terminate malicious .NET host processes residing in %APPDATA% or %TEMP%.
3. Remove persistent registry keys in HKCU and HKLM Run folders.
4. Inspect and sanitize all connected USB drives to remove hidden payloads and malicious .lnk shortcuts.
5. Reset all browser, email, and network credentials accessed from the infected endpoint.

What to Avoid

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

1. Do not allow infected USB drives to be connected to clean workstations for forensic examination without write-blocking.
2. Do not rely solely on antivirus signatures, as njRAT builders offer easy obfuscation and crypter integration.

References & External Analysis

• MITRE ATT&CK: njRAT (S0385)
• CISA Advisory: CISA Alert TA14-182A (Operation Flash / Bladabindi & Jenxcus Takedown)
• Search "bladabindi" on VirusTotal (External Analysis)
• Search "bladabindi" on Any.Run (Sandbox Sandbox)
• Search "bladabindi" on MalwareBazaar (Malware Samples)

North American Authority Advisory (CISA / NIST)

The Cybersecurity and Infrastructure Security Agency (CISA) has published an official US federal advisory on this family, which can be mapped to NIST Cybersecurity Framework (CSF) incident response controls: CISA Alert TA14-182A (Operation Flash / Bladabindi & Jenxcus Takedown) ↗

Frequently Asked Questions

Related Threats (Category: Rat)

Explore other documented threats in the same operational category:

• Rescoms
• Zegost
• Darkkomet
• Lost_Door
• Farfli
• Asyncrat
• Turkojan
• Hupigon

Machine-readable

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