Daily Summary
Vidar activity on 2026-04-29 showed 21 new samples, a 51% decline compared to the 7-day average of 42. This sharp drop marks a cooling period after sustained higher-volume days earlier in the week, though the family remains consistently present day-over-day.
New Samples Detected
Of the 21 new samples, 18 were .exe files (86% of total), maintaining this family’s strong preference for portable executables. A single .dll, one .zip, and one .js file were also observed, indicating minor diversification attempts but no major shift from the .exe-heavy packaging baseline. No new file extension patterns emerged today.
Distribution Methods
The file type distribution aligns with Vidar’s known delivery methods: the .exe and .zip samples likely arrive as email attachments or through fake download sites, while the lone .js file suggests occasional script-based droppers. The .dll sample may indicate sideloading attempts, but this is not a dominant tactic currently.
Detection Rate
Approximately 67% of today’s samples were flagged as malicious by leading AV engines within the first 6 hours of upload. However, 7 samples had detection rates below 30%, suggesting recent packing or obfuscation updates are partially evading signature-based detection. The .js file showed the weakest detection at 11%.
C2 Infrastructure
A significant spike in new C2 servers was recorded: 100 new endpoints today, a notable increase despite the sample drop. This separation of sample volume from C2 deployment suggests infrastructure expansion independent of active distribution phases. No clear geographic clustering was observed.
7-Day Trend
Vidar activity has trended downward over the past 48-72 hours, with today’s sample count marking the lowest point in the week. The 7-day average remains inflated by a peak of 58 samples on April 26, indicating a natural cycle rather than a systemic decline.
Security Analysis
A non-obvious observation: the ratio of new C2 servers to samples today is nearly 5:1, unusually high for Vidar. This may indicate operators are preparing infrastructure for a future campaign surge rather than linking to current detonations. Defensive teams should prioritize hunting for outbound connections to these 100 new C2 endpoints, as they likely represent dormant staging points for imminent reinfection waves.