Why can't find solution?

[antnks]

I have this example:

flag{ ⊕ fe9xw = 0x0009581F0C

When I try to brute force with a known key length - can't find the solution:

$ cat xor2.hex 
0009581F0C

$ xortool -b -l 5 -x xor2.hex 
256 possible key(s) of length 5:
\x00\tX\x1f\x0c
\x01\x08Y\x1e\r
\x02\x0bZ\x1d\x0e
\x03\n[\x1c\x0f
\x04\r\\\x1b\x08
...
Found 100 plaintexts with 95%+ valid characters
See files filename-key.csv, filename-char_used-perc_valid.csv

grep flag xortool_out/* -r
$

$ xortool -o -l 5 -x xor2.hex 
100 possible key(s) of length 5:
09h/<
18i.=
2;j->
3:k,?
4=l+8
...
Found 100 plaintexts with 95%+ valid characters
See files filename-key.csv, filename-char_used-perc_valid.csv

grep flag xortool_out/* -r
$

What am I doing wrong?