Yes. Allah ordered the punishment for theft in the Quran (5:38), which shows that it is a serious sin. Taking another person's property wrongfully in any way is forbidden.
Laki-laki yang mencuri dan perempuan yang mencuri, potonglah tangan keduanya (sebagai) pembalasan bagi apa yang mereka kerjakan dan sebagai siksaan dari Allah. Dan Allah Maha Perkasa lagi Maha Bijaksana.
This is general information, not a fatwa. For your own situation, ask a qualified scholar.
Questions about halal and haram
Is stealing haram?
Yes. Allah ordered the punishment for theft in the Quran (5:38), which shows that it is a serious sin. Taking another person's property wrongfully in any way is forbidden.