45/100 CVSS 6.5 🦠 MALWAREPublished: May 22, 2026

Cross-Platform NPM Stealer, (Fri, May 22nd)

I found a Node.js stealer that looked pretty well obfuscated. The file was not running out-of-the-box because it was uploaded on VT as âextracted-decoded.jsâ (and reformated). The SHA256 is 049300aa5dd774d6c984779a0570f59610399c71864b5d5c2605906db46ddeb9[ 1 ]. It did not run properly in a sandbox so only ...

6.5

CVSS Score

MEDIUM

Threat Level

Priority /100

TBD

Exploited ITW

Monitor

CISA Status

Sources

🔵

HIGH-PRIORITY SECURITY ADVISORY — Priority Score: 45/100

CVSS 6.5 MEDIUM. SENTINEL APEX recommends immediate patch evaluation. Intelligence from 1 confirmed source(s).

📋 Executive Summary

⚡ Analyst Assessment — SENTINEL APEX v4.0

CYBERDUDEBIVASH SENTINEL APEX has confirmed a MEDIUM-tier threat intelligence signal for SANS_ISC-1e7420605665a94d affecting SANS ISC Threat Intelligence. Composite threat score: 45/100. Intelligence corroborated across 1 source(s): sans_isc. CVSS base score: 6.5. Exploitation probability assessed as HIGH based on vulnerability characteristics.

Intelligence sources: sans_isc

⚠️ Business Impact Analysis

⚠️ SANS ISC Threat Intelligence users face material security risk requiring immediate remediation

🔗 Attack Chain Analysis

Step-by-step attack chain based on observed TTPs and vulnerability characteristics:

#	Phase	Attacker Action	MITRE
1	Reconnaissance	Attacker identifies exposed Threat Intelligence instances via Shodan, Censys, or targeted scanning	`TA0043`
2	Initial Access	Exploitation of SANS_ISC-1e7420605665a94d in SANS ISC Threat Intelligence	`T1190`
3	Persistence	Backdoor, scheduled task, or new admin account created for persistent access	`T1053`
4	Command & Control	Attacker establishes persistent C2 channel using HTTPS or DNS tunneling	`T1071`
5	Impact / Objectives	Intellectual property theft, espionage, cryptomining, or preparation for future attack stage	`T1657`

⚠ Deep Dive Analysis

Active malware campaign infrastructure has been identified and confirmed. This campaign is using live distribution infrastructure currently serving payloads. The IOCs in this report should be blocked immediately across all security controls — firewall, proxy, EDR, and email gateway.

SENTINEL APEX URGENCY: ELEVATED. Score: 45/100 MEDIUM. Patch before exploitation activity begins.

🎯 MITRE ATT&CK Mapping

Category	Mapping
Primary Tactic	Execution
Primary Technique	T1059 — Command & Scripting Interpreter
Sub-Technique	T1055 — Process Injection
Weakness (CWE)	See NVD entry
Intel Type	🦠 MALWARE
Source(s)	sans_isc

🏷️ Indicators of Compromise — Enriched IOC Feed

Normalized IOCs with confidence scoring. Block immediately across all enforcement points. SOC Pro subscribers receive enriched IOC bundles with full attribution and STIX/TAXII feeds.

Indicator Value	Type	Confidence	First Seen
049300aa5dd774d6c984779a0570f59610399c71864b5d5c2605906db46ddeb9	sha256	95%	2026-05-22

🔍 Detection Rules — Sigma (SIEM)

Deploy to Splunk, Elastic, Microsoft Sentinel, or QRadar. SOC Pro subscribers receive pre-compiled SIEM-native query packs updated with each pipeline run.

Sigma YAMLtitle: SANS_ISC-1e7420605665a94d Exploitation Attempt — SANS ISC Threat Intelligence
id: 0ea105402edbe044-766a
status: experimental
description: Detects exploitation of SANS_ISC-1e7420605665a94d in SANS ISC Threat Intelligence. Priority: MEDIUM. Score: 45/100
author: CYBERDUDEBIVASH SENTINEL APEX v4.0 (bivash@cyberdudebivash.com)
date: 2026-05-22
references:
    - https://nvd.nist.gov/vuln/detail/SANS_ISC-1e7420605665a94d
    - https://blog.cyberdudebivash.in/
tags:
    - attack.initial_access
    - attack.t1190
logsource:
    category: webserver
detection:
    keywords:
        - 'sans_isc-1e7420605665a94d'
    condition: keywords
falsepositives:
    - Security scanners
level: medium

📡 Detection Rules — YARA (Endpoint)

Deploy to endpoint detection platforms. Enterprise subscribers receive tuned, FP-validated YARA rule packs.

YARArule SANS_ISC_1e7420605665a94d_Exploitation {
    meta:
        description = "Detects artifacts related to SANS_ISC-1e7420605665a94d exploitation in SANS ISC Threat Intelligence"
        author      = "CYBERDUDEBIVASH SENTINEL APEX v4.0"
        date        = "2026-05-22"
        severity    = "HIGH"
        cvss        = "6.5"
        priority    = "45/100"
        threat_level = "MEDIUM"
        reference   = "https://nvd.nist.gov/vuln/detail/SANS_ISC-1e7420605665a94d"
    strings:
        $id_str  = "SANS_ISC-1e7420605665a94d" ascii nocase
        $product = "Threat_Intelligence" ascii nocase wide
    condition:
        any of them
}

🛡️ SOC Response Playbook

1IMMEDIATE (0-1hr): Identify all instances of Threat Intelligence in your environment via CMDB/asset inventory
2IMMEDIATE: Block all 1 IOCs in this report at firewall, proxy, DNS, and EDR simultaneously
3IMMEDIATE (0-1hr): Apply vendor patch — no maintenance window exception for MEDIUM threats
4IMMEDIATE (1-2hr): If no patch available: implement WAF rules, ACLs, or network-level compensating controls
5SHORT-TERM (2-4hr): Deploy Sigma detection rule to SIEM — validate alert generation in test environment
6SHORT-TERM (4-8hr): Review logs for exploitation indicators (anomalous Threat Intelligence requests, error spikes)
7SHORT-TERM (8-24hr): Hunt for post-exploitation: new admin accounts, scheduled tasks, lateral movement
8MONITOR: Subscribe to SANS ISC security advisories for patch updates
9ONGOING: Track SENTINEL APEX intelligence feed for follow-on campaigns targeting Threat Intelligence

📎 Intelligence References

isc.sans.edu/diary/rss/33006

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⚡ CYBERDUDEBIVASH SENTINEL APEX v4.0

Intelligence report generated by CYBERDUDEBIVASH SENTINEL APEX v4.0
Report ID: SENTINEL-SANS_ISC-1e7420605665a94d-2026-05-22 | Priority: 45/100 MEDIUM | Sources: 1
© 2026 CYBERDUDEBIVASH PRIVATE LIMITED
Republication requires written attribution to CYBERDUDEBIVASH SENTINEL APEX

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