Tips : Cara Mencegah Terserang Virus Ransomware Wannacrypt

Jaka Jumat, 19 Mei 2017 09:54:16 Tips & Trick 2161

APA ITU RANSOMWARE WANNACRYPT ?
Ransomware WannaCrypt merupakan perangkat lunak berbahaya yang mengancam komputer anda dengan cara melakukan enkripsi/penguncian terhadap seluruh data yang ada di komputer anda sampai dengan anda membayarkan sejumlah tebusan tertentu ke pembuat perangkat lunak berbahaya tersebut.

Sistem operasi yang terdampak oleh serangan WannaCrypt adalah sistem operasi Microsoft Windows versi 8 ke bawah. Hingga kini, WannaCrypt dilaporkan tidak menyerang gawai (smartphone dan tablet).

Baca lebih lanjut mengenai ransomware WannaCrypt [http://idsirtii.or.id/halaman/tentang/faq.html]

Berikut cara mencegah terserang virus Ransomware Wannacrypt
1. Putus koneksi ke internet. Cabut konektor kabel jaringan atau nonaktifkan wifi. Bisa juga matikan router wifi.


2. Non aktifkan Macro pd MS Office caranya:
Untuk MS Excel 2016
a. Jalankan MS Excel
b. Klik menu "File" pilih "Options"
c. Klik "Trust Center"
d. Klik "Trust Center settings"
e. Klik "Macro settings"
f. Check/pilih "Disable all macros without notification"
g. Klik "OK"
h. Lakukan hal yg sama pd program MS Office yg lain seperti MS Word, Powerpoint, Access, Outlook.


3. Non aktifkan fitur File Sharing/Samba caranya:
a. Jalankan Control Panel
b. Klik "Programs"
c. Dibawah bagian "Program and Features" klik "Turn Windows features on or off"
d. Setelah muncul jendela baru, cari check list "SMB 1.0/CIFS File Sharing Support" dan hilangkan tanda check-nya
e. Klik "OK"
4. Block port 139/445 dan 3389 caranya:
a. Jalankan Control Panel
b. Klik "System and Security"
c. Klik "Windows Firewall"
d. Klik "Advanced Settings" pd menu bagian kiri
e. Klik "Inbound Rules"
f. Lihat pada menu bagian kanan Klik "New Rules"
g. Pilih/Klik "Port" dan klik "Next"
h. Pilih/Klik "TCP"
i. Pilih/Klik "Specific local ports:" isikan/ketik: 139, 445, 3389
j. Klik "Next"
k. Pilih/Klik "Block the connection" dan klik "Next"
l. Pastikan Pilihan "Domain", "Private" dan "Public" terpilih (checked)
m. Klik "Next"
n. Isikan/ketik nama rule, misal: Block Port Ransomware
o. Klik "Finish"


5. Update security pada windows anda dengan install Patch MS17-010 yang dikeluarkan oleh microsoft.
Lihat : https://technet.microsoft.com/en-us/library/security/ms17-010.aspx

WannaCry


Kena Virus Wanna Cry?
Gini cara ngatasinnya 
Kalo udah masuk ke Virus .wcry (cek gambar)
1. Masuk ke Safe Mode
2. Klik Safe Boot -> minimal, Klik Ok dan Restart
3. Setelah direstart masuk ke Control Panel -> Folder Options -> Show Hidden File (cek gambar) lalu klik Apply
4. Masuk ke msconfig -> Startup -> Disable Program yang mencurigakan atau tidak diketahui, klik ok dan Klik "Exit without Restart"
5. Hapus File Berbahaya (File Virusnya Semua)
6. Periksa folder berikutnya untuk menemukan file yang mencurigakan:
%TEMP%
%APPDATA%
%ProgramData%
(Jika ada folder / File Wanna Cry hapus langsung)
7. cek host file, karena itu bisa corrupt sama si Virus
Letak host:
C:\windows\System32\drivers\etc
nanti ada file host lalu buka pake notepad
(Disitu jika ada situs yang ga diketahui, maka hapus langsung)
8. nah abis itu, masuk lagi ke msconfig terus disable Safe Mode klik ok lalu Restart
9. Setelah direstart, tidak ada "Decryption Tool" sekarang, tapi ente dapat merestore file dari backup atau mengembalikan folder yang terpisah
10. Sekarang ente bisa lihat versi lama dari file yang terenskripsi
11. Hapus File bernama:
Readme.txt.WCRY
License.txt.WCRY
History.txt.WCRY
!Please Read Me!.txt
!WannaDecryptor!.exe

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