Executive Summary

• SGI detected a suspicious JavaScript file transfer originating from IP address 46.188.119.26 (AS8334, Russia).
• The transferred file, identified as ‘standalone-framework.js’, has a low severity rating but exhibits characteristics of potentially malicious code.
• The objective of this activity is currently unknown but could include reconnaissance, malware delivery, or exploitation of vulnerabilities.
• The business risk level is moderate, requiring further investigation to determine the full impact.
• We anticipate a potential increase in similar low-severity JavaScript-based attacks targeting web applications and user browsers in the coming months.

Observed Activity (SGI Sensors)

On November 10, 2025, at 02:55:14 UTC, an SGI sensor detected a TCP connection from IP address 46.188.119.26, originating from Moscow, Russia (AS8334). The connection involved the transfer of a file identified as ‘standalone-framework.js’. While the file is currently flagged with low severity, its origin and the fact that it was transferred warrant closer inspection. The sensor did not report a specific destination port. The lack of widespread detection by antivirus vendors suggests either a new or customized payload.

Malware/Technique Overview

The detected file is classified as ‘standalone-framework.js’. Based on the VirusTotal results, the file shares names with seemingly benign files. However, the association with domains like www.iamcloud.online, www.cornpositegeargroup.com and www.atelier1073.com warrants suspicion. Further analysis is needed to determine the file’s exact purpose and functionality. Given that is a javascript file it is likely an attempt at client side exploitation, drive by download, or web inject.

• T1071.001 Application Layer Protocol: Web Protocols
• T1595.002 Active Scanning: Vulnerability Scanning
• T1189 Drive-by Compromise

VirusTotal Snapshot

VirusTotal analysis indicates a low malicious detection rate (0/92), with 62 vendors reporting it as undetected. The file has a VirusTotal reputation score of -575. The file is described as Text and is 1 byte in size. Some vendors have identified it with aliases such as ‘zip-safe’, ‘__init__.py’, and ‘standalone.js’.

• VirusTotal Sample

Indicators of Compromise (IoCs)

We recommend monitoring these IoCs for at least 30 days.

Detection & Hunting

Utilize the following queries to detect similar activity within your environment:

Splunk

index=* src_ip=46.188.119.0/24 file_hash=01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b 
| table _time, src_ip, dest_ip, file_name, file_hash

Elastic/Kibana KQL

src_ip : 46.188.119.0/24 AND file_hash : 01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b

When reviewing results, correlate with other network activity and endpoint events to validate potential malicious activity. False positives may include legitimate traffic from the identified IP range or common files that match the hash.

Containment, Eradication & Recovery

1. Isolate affected systems from the network to prevent further spread.
2. Block the identified IP address (46.188.119.26) at the firewall level.
3. Scan all endpoints for the presence of the identified file hash (01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b).
4. Reimage any compromised systems to ensure complete eradication.
5. Reset user credentials on any potentially affected accounts.

Inform IT and leadership about the incident and planned remediation steps. Preserve any relevant logs and artifacts for forensic analysis.

Hardening & Preventive Controls

• Implement Multi-Factor Authentication (MFA) for all user accounts (NIST CSF PR.AC-1, CIS Control 6).
• Tune Endpoint Detection and Response (EDR) systems to detect suspicious file transfers and process executions (NIST CSF DE.CM-1, CIS Control 8).
• Enforce Network Segmentation to limit the lateral movement of attackers (NIST CSF PR.AC-5, CIS Control 14).
• Apply the Principle of Least Privilege to minimize the impact of compromised accounts (NIST CSF PR.AC-3, CIS Control 5).
• Maintain Patch SLAs to address vulnerabilities promptly (NIST CSF ID.AM-2, CIS Control 7).
• Block unused ports and protocols to reduce the attack surface.

Business Impact & Risk Outlook

The potential business impact includes operational disruption, data breach, and reputational damage. Legal and compliance risks may arise depending on the data accessed or compromised. We anticipate an increase in low-sophistication attacks leveraging JavaScript and other scripting languages to target web applications and user browsers. Organizations should prioritize web application security and user awareness training.

Appendix

The detected payload was a 1 byte javascript file, therefore redaction is not necessary.

Assumptions & Data Gaps

• We assume the provided data is accurate and representative of the observed activity.
• The destination port of the TCP connection is unknown.
• The full content of the ‘standalone-framework.js’ file is unavailable for analysis.

References

• VirusTotal Sample

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