Better attempt at narrowing down

Author: mnadareski

BurnOutSharp/PackerType/UPX.cs

@@ -14,9 +14,11 @@ public string CheckContents(string file, byte[] fileContent, bool includePositio
                 // UPX!
                 new ContentMatchSet(new byte?[] { 0x55, 0x50, 0x58, 0x21 }, GetVersion, "UPX"),
 
-                // This over-matches by itself, seemingly
                 // NOS 
-                //new ContentMatchSet(new byte?[] { 0x4E, 0x4F, 0x53, 0x20 }, GetVersion, "UPX (NOS Variant)"),
+                new ContentMatchSet(
+                    new ContentMatch(new byte?[] { 0x4E, 0x4F, 0x53, 0x20 }, end: 2048),
+                    GetVersion,
+                    "UPX (NOS Variant)"),
 
                 new ContentMatchSet(
                     new List<byte?[]>