Check Point Research reported a targeted espionage campaign in North Africa, primarily against Libyan organizations, using a previously undocumented modular Windows backdoor dubbed Stealth Soldier. The malware was built for surveillance and theft, with capabilities including file exfiltration, screenshot capture, microphone recording, keystroke logging, browser credential theft, and PowerShell-based command execution. Researchers observed several versions of the malware, from Version 6 compiled in October 2022 through Version 9 likely delivered in February 2023, indicating the operation remained under active development.
The intrusion chain used a downloader, loader, watchdog, and final payload, while command-and-control and delivery infrastructure included domains such as filestoragehub[.]live, customjvupdate[.]live, and filecloud[.]store. Check Point said the infrastructure and phishing-domain naming patterns overlap with the earlier Eye on the Nile activity, suggesting the return of the same threat actor or a closely related cluster. The broader infrastructure also included phishing domains impersonating the Libyan Ministry of Foreign Affairs and webmail or login portals, aligning the campaign with politically motivated surveillance activity seen in prior phishing operations against civil society targets in the region, including Egyptian organizations documented by Amnesty International.

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5 events from the most recent confirmed update back to the earliest known activity.
Check Point Research disclosed an ongoing targeted espionage campaign in North Africa, primarily affecting Libyan organizations, using the previously undocumented Stealth Soldier modular Windows backdoor. The report also noted infrastructure overlaps with the earlier Eye on the Nile operation and phishing domains impersonating Libyan government and webmail brands.
Check Point assessed that the newest observed sample, Version 9, was likely delivered in February 2023. The progression from Version 6 to Version 9 suggests iterative maintenance and continued operational use.
Researchers found Stealth Soldier-related malware samples submitted to VirusTotal from Libya between November 2022 and January 2023. These submissions support the assessment that the campaign was targeting Libyan organizations during that period.
Check Point identified the oldest observed Stealth Soldier malware sample as Version 6, compiled in October 2022. This indicates the backdoor family was already in active development by that time.
Amnesty International published research on phishing attacks using third-party applications against Egyptian civil society organizations. This earlier activity is relevant as background to the later Eye on the Nile-linked infrastructure overlaps noted by Check Point.
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