
In a recent development, European officials stationed at Indian diplomatic missions have successfully averted potential cybersecurity threats orchestrated by a previously unknown group identified as SPIKEDWINE. The emergence of a new backdoor named WINELOADER has been linked to these diplomatic events, shedding light on the importance of heightened cybersecurity measures in diplomatic circles.
According to findings reported by Zscaler ThreatLabz, SPIKEDWINE employed sophisticated tactics to target officials through an elaborate scheme. The group circulated PDF files within emails, allegedly originating from the Ambassador of India, inviting diplomatic personnel to a wine-tasting event scheduled for February 2, 2024.
Upon analysis, it was discovered that the PDF document, which had been uploaded to VirusTotal from Latvia on January 30, 2024, served as a conduit for the malware. Interestingly, traces of similar activities dating back to July 6, 2023, suggest a prolonged and calculated campaign by the threat actor.
Security researchers, including Sudeep Singh and Roy Tay, underscored the unique characteristics of the attack, emphasizing its low volume and the utilization of advanced tactics, techniques, and procedures (TTPs) within the malware and command-and-control (C2) infrastructure.
At the heart of the sophisticated attack lies the deceptive PDF file, housing a malicious link disguised as a questionnaire, enticing recipients to engage. Clicking on the link initiates the execution of an HTML application (“wine.hta”), housing obfuscated JavaScript code designed to retrieve an encoded ZIP archive containing WINELOADER from the designated domain.
The WINELOADER malware boasts a core module with functionalities enabling the execution of modules from the C2 server, DLL injection, and dynamic sleep interval adjustment between beacon requests, enhancing its stealth capabilities.

Of particular concern is the utilization of compromised websites for C2 and intermediate payload hosting, indicative of a meticulous effort by the threat actor to evade detection. It’s believed that the C2 server selectively responds to specific requests at predefined intervals, further complicating detection efforts.
Singh and Tay highlighted the threat actor’s deliberate evasion tactics, which include measures to bypass memory forensics and automated URL scanning solutions, indicating a high level of sophistication and strategic planning.
In response to these emerging cyber threats, European officials have ramped up cybersecurity measures, deploying robust monitoring systems and enhancing employee awareness programs to mitigate potential risks. The incident underscores the critical importance of vigilance and proactive defense mechanisms in safeguarding diplomatic entities against cyber threats.
Moreover, collaborations between international cybersecurity agencies and diplomatic missions are being strengthened to facilitate information sharing and intelligence gathering, ensuring a coordinated response to emerging threats.
While the SPIKEDWINE incident serves as a stark reminder of the evolving cyber landscape, it also highlights the resilience and adaptability of diplomatic communities in the face of adversity. Through swift action and collaborative efforts, officials have effectively thwarted potential threats, reaffirming their commitment to upholding security standards and safeguarding diplomatic interests in an increasingly interconnected world.
As cybersecurity threats continue to evolve, diplomatic entities remain vigilant, fortifying their defenses and adapting to emerging challenges, thereby ensuring the integrity and security of diplomatic operations worldwide.
According to findings reported by Zscaler ThreatLabz, SPIKEDWINE employed sophisticated tactics to target officials through an elaborate scheme. The group circulated PDF files within emails, allegedly originating from the Ambassador of India, inviting diplomatic personnel to a wine-tasting event scheduled for February 2, 2024.
Upon analysis, it was discovered that the PDF document, which had been uploaded to VirusTotal from Latvia on January 30, 2024, served as a conduit for the malware. Interestingly, traces of similar activities dating back to July 6, 2023, suggest a prolonged and calculated campaign by the threat actor.
Security researchers, including Sudeep Singh and Roy Tay, underscored the unique characteristics of the attack, emphasizing its low volume and the utilization of advanced tactics, techniques, and procedures (TTPs) within the malware and command-and-control (C2) infrastructure.
At the heart of the sophisticated attack lies the deceptive PDF file, housing a malicious link disguised as a questionnaire, enticing recipients to engage. Clicking on the link initiates the execution of an HTML application (“wine.hta”), housing obfuscated JavaScript code designed to retrieve an encoded ZIP archive containing WINELOADER from the designated domain.
The WINELOADER malware boasts a core module with functionalities enabling the execution of modules from the C2 server, DLL injection, and dynamic sleep interval adjustment between beacon requests, enhancing its stealth capabilities.
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