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Intelligence View

⚡ tsecurity.de Intelligence

They thought they were downloading Claude Code source. They got a nasty dose of malware instead

Source code with a side of Vidar stealer and GhostSocks Tens of thousands of people eagerly downloaded the leaked Claude Code source code this week, and some of those downloads came with a side of credential-stealing malware.… This article …

IT Security Nachrichten itsecuritynews.info 02.04.2026, 20:20 Uhr 1 Min. Lesezeit

↗ Quelle (itsecuritynews.info)

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The post They thought they were downloading Claude Code source. They got a nasty dose of malware instead appeared first on IT Security News.

IR-PLAYBOOK-RCE

HIGH

SOC Incident Playbook: Remote Code Execution (RCE) Defense

WAF MitigationSofort

Virtuelles Patchen am Reverse Proxy / WAF für gefährdete URL-Pfade und Payloads aktivieren.

SecRule REQUEST_URI "@rx ..." "id:1001,phase:1,deny,status:403"

Web Shell ScanSofort

Web-Root auf neu angelegte Scripts, anomal modifizierte Dateien und Persistence scannen.

find /var/www -type f -name "*.php" -mmin -120

Outbound FilteringSofort

Ausgehenden Datenverkehr (Reverse Shells zu unbekannten IPs/Ports) blockieren.

ss -tunp | grep -E ":(4444|1337|8080|9001)"

Vendor Patching

Hersteller-Update in Staging validieren und schnellstmöglich in Produktion ausrollen.

apt update && apt --only-upgrade install <pkg>

1-Click Detection Engineering: Sigma & YARA Rules

SOC Ready

title: Detect Exploitation - They thought they were downloading Claude Code source. They got a nasty dose of malware instead
id: 80f746f7-34af-4988-8dd5-0ea288c0501a
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
  - https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
  category: network_connection
  product: any
detection:
  selection:
      CommandLine|contains:
        - 'exploit'
  condition: selection
falsepositives:
  - Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
  - attack.initial_access

rule CTI_Threat_Indicator {
    meta:
        author = "iShareStuff CTI Automated Detection Engine"
        date = "2026-09-24"
        description = "YARA Signature for "
    strings:
        $str = "They thought they were downloa" ascii wide
    condition:
        any of them
}

Infrastructure Blast Radius & Exposure

LOCALIZED

Perimeter & External Ingress

GEFÄHRDET (85%)

Lateral Movement & Pivot

Geringes Risiko

Data Stores & Crown Jewels

Geringes Risiko

Supply Chain & Cascading Reach

Geringes Risiko

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They thought they were downloading Claude Code source. They got a nasty dose of malware instead

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