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Pandora analysis (Ilnas-04570323.exe) - malicious files included in an email

Low
Published: Tue Mar 14 2023 (03/14/2023, 00:00:00 UTC)
Source: CIRCL
Vendor/Project: tlp
Product: clear

Description

Pandora analysis (Ilnas-04570323.exe) - malicious files included in an email

AI-Powered Analysis

AILast updated: 07/02/2025, 07:56:22 UTC

Technical Analysis

The provided information describes a security threat involving a malicious executable file named 'Ilnas-04570323.exe' that was distributed via email. This file was analyzed by CIRCL (Computer Incident Response Center Luxembourg) under the project 'tlp' and is categorized as an OSINT (Open Source Intelligence) item with a low severity rating. The threat is characterized by the presence of malicious files included in an email, suggesting a phishing or spear-phishing campaign aimed at delivering malware payloads to victims. The lack of detailed technical indicators, such as specific malware behavior, infection vectors, or exploitation techniques, limits the depth of analysis. However, the threat level is indicated as 3 (on an unspecified scale), and the analysis level is 2, implying moderate confidence in the malicious nature of the file. The absence of known exploits in the wild and no patch links suggest that this is not a vulnerability in software but rather a malware delivery attempt. The executable likely attempts to compromise the confidentiality, integrity, or availability of the infected system once executed, possibly through data exfiltration, system manipulation, or establishing persistence. Given the delivery method (email attachment), user interaction is required to execute the file, which reduces the ease of exploitation but still poses a risk, especially if social engineering tactics are effective.

Potential Impact

For European organizations, the impact of this threat primarily revolves around the risk of malware infection through email vectors. If executed, the malicious file could lead to unauthorized access, data theft, or disruption of business operations. Organizations handling sensitive personal data under GDPR could face compliance risks if data confidentiality is breached. The low severity rating suggests limited immediate damage, but even low-severity malware can serve as a foothold for more advanced attacks or lateral movement within networks. The threat is particularly relevant for sectors with high email communication volumes and less mature email security controls, such as small and medium enterprises (SMEs). Additionally, organizations with insufficient user awareness training are more vulnerable to such email-based threats. The lack of known exploits in the wild indicates that widespread attacks may not be occurring, but targeted campaigns cannot be ruled out.

Mitigation Recommendations

To mitigate this threat, European organizations should implement advanced email filtering solutions that can detect and quarantine suspicious attachments, especially executable files. Deploying sandboxing technologies to analyze email attachments before delivery can help identify malicious behavior. User awareness training is critical to educate employees about the risks of opening unexpected or suspicious attachments, emphasizing verification of sender identity. Endpoint protection platforms with behavioral detection capabilities should be employed to detect and block execution of unauthorized executables. Organizations should enforce application whitelisting policies to prevent execution of unknown or untrusted binaries. Regular backups and incident response plans should be maintained to minimize impact in case of infection. Network segmentation can limit lateral movement if a system is compromised. Finally, monitoring email logs and endpoint telemetry for indicators of compromise related to this threat can facilitate early detection and response.

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Technical Details

Threat Level
3
Analysis
2
Original Timestamp
1678791723

Threat ID: 682acdbebbaf20d303f0c23f

Added to database: 5/19/2025, 6:20:46 AM

Last enriched: 7/2/2025, 7:56:22 AM

Last updated: 8/16/2025, 5:25:06 PM

Views: 10

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