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Ursnif, MALWAREMESSIAGH

Low
Published: Wed Aug 01 2018 (08/01/2018, 00:00:00 UTC)
Source: CIRCL
Vendor/Project: misp-galaxy
Product: banker

Description

Ursnif, MALWAREMESSIAGH

AI-Powered Analysis

AILast updated: 07/02/2025, 11:40:14 UTC

Technical Analysis

The threat described involves Ursnif, also known as MALWAREMESSIAGH, a variant of the Ursnif banking malware family. Ursnif is a well-known Trojan primarily designed to steal banking credentials and other sensitive financial information from infected systems. It typically operates by injecting itself into browsers and intercepting data entered by users on banking websites, enabling attackers to capture login credentials, session cookies, and other personal information. Ursnif variants often use sophisticated evasion techniques, including code obfuscation and anti-analysis measures, to avoid detection by security software. The mention of MALWAREMESSIAGH and the tag referencing "banker="gozi"" suggests a connection or similarity to the Gozi banking Trojan lineage, which is known for its modular architecture and capability to download additional payloads. Although no specific affected versions or patch links are provided, the malware is categorized as a banker Trojan, indicating its primary goal is financial theft. The threat level and analysis scores (3 and 2 respectively) imply moderate confidence in the threat's presence and behavior. The absence of known exploits in the wild and the low severity rating suggest that while the malware is active, it may not currently be widespread or highly aggressive. However, banking Trojans like Ursnif remain a persistent threat due to their potential to cause significant financial loss and data breaches.

Potential Impact

For European organizations, the impact of Ursnif malware can be substantial, particularly for financial institutions, e-commerce platforms, and any enterprise handling sensitive customer financial data. Successful infections can lead to credential theft, unauthorized transactions, and financial fraud, undermining customer trust and causing regulatory compliance issues under GDPR and other financial regulations. The malware's ability to steal credentials can also facilitate lateral movement within corporate networks, potentially exposing other sensitive systems and data. Small and medium-sized enterprises (SMEs) may be particularly vulnerable due to limited cybersecurity resources. Additionally, the reputational damage and potential legal consequences from data breaches can have long-term effects on affected organizations. Although the current severity is low, the evolving nature of Ursnif variants means that European entities should remain vigilant, as attackers may update the malware to exploit new vulnerabilities or increase its stealth and persistence capabilities.

Mitigation Recommendations

To mitigate the threat posed by Ursnif, European organizations should implement a multi-layered defense strategy tailored to banking malware. This includes deploying advanced endpoint detection and response (EDR) solutions capable of identifying behavioral indicators of banking Trojans, such as unusual browser injections or network traffic patterns. Organizations should enforce strict application whitelisting and regularly update all software to close potential exploitation vectors. Network segmentation can limit malware spread if an infection occurs. User education is critical; employees should be trained to recognize phishing attempts, which are common delivery methods for Ursnif. Implementing multi-factor authentication (MFA) for all financial and sensitive systems reduces the risk of credential misuse even if theft occurs. Regular threat hunting and monitoring of network traffic for known Ursnif command and control (C2) indicators can help detect infections early. Finally, organizations should maintain robust incident response plans specifically addressing banking malware scenarios to minimize damage and recovery time.

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Technical Details

Threat Level
3
Analysis
2
Original Timestamp
1533306089

Threat ID: 682acdbdbbaf20d303f0be84

Added to database: 5/19/2025, 6:20:45 AM

Last enriched: 7/2/2025, 11:40:14 AM

Last updated: 8/10/2025, 1:05:59 PM

Views: 9

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