BelkaCTF #7: Stranger Dfings

BelkaCTF #7 is over, and the Earth is safe from the extraterrestrial perpetrators (for now!). Thank you for playing, we hope you enjoyed it! Congratulations to the winners:
Student track: LEEJINUNG, k3vg3n, d1v1ne
Professional track: br1g, its5Q, Flip

đź“„ BelkaCTF #7: Stranger Dfings write-up

—I felt it again—something off—but my feet just dragged me straight into the Chief’s office. Unlike the first task, though, I genuinely had no clue what the second one was.

The Chief didn’t even bother looking up from the pile of papers on his desk. He just grunted one word:

—Malware.

—…

I answered that with a big fat nothing.

Warmup
100
Locker
Solved 266 times

There is something rogue running on this machine.
What is the malware executable file name?

Flag:


100 100 175 100 100 100 198 100 100 181 140 658 146 257 319 40 709 494 348 557 774 800 829 50