Neu nhan duoc email de nghi ban tai ve phien ban Internet
Explorer 7 Beta 2 thi hay xoa no ngay lap tuc. Boi do chi la mot con virus moi
xuat hien va phat tan bang cach gia mao phien ban thu nghiem trinh duyet moi
nhat cua Microsoft.
Cac chuyen gia bao mat khang dinh con virus nay chua thuc su phat tan rong nhung
no lai gay duoc kha nhieu su chu y. Thu nhat la email gia mao cua no chua nhung
hinh anh do hoa rat giong voi do hoa thuong duoc Microsoft su dung. Thu hai con
virus dua ra mot link de nguoi tai ve chu khong khong gui tep tin dinh kem.
Nhung yeu to nay khien nguoi dung thong thuong rat de tro thanh nan nhan cua con
virus.
"Gui mot duong lien ket thay vi tep tin dinh kem gio day da tro thanh xu
huong cua gioi tac. Day la mot xu huong rat moi va dat duoc hieu qua hon hinh
thuc gui tep tin dinh kem rat nhieu," ong Mikko Hypponen - Giam doc ky
thuat cua hang bao mat F-Secure - cho biet.
Nhung email nhu the nay thuong mang tua de "Internet Explorer 7
Downloads" va gia mao duoc gui di tu
admin@microsoft.com. Noi dung buc email co chua mot bieu tuong theo kieu
cua Microsoft lien ket tai ve mot tep tin IE7.exe.
Noi dung
email:
From:
admin[at]microsoft[dot]com
Subject: Internet Explorer 7 Downloads
Body:
Tep tin
do thuc ra la mot con virus mang ten Virus.Win32.Grum.A - theo
cach dat ten cua F-Secure. Hien cac chuyen gia bao mat van chua ro chuc nang
chinh cua con virus nay gi.
Hang bao mat Sophos cho biet con virus nay con tu dong phat tan bang cach tu gui
mot ban sao cua no den cac dia chi email co san tren PC bi nhiem.
"Con virus tu tao ra nhung khoa Registry tren he thong va tai ve them nhieu
tep tin khac", ong Graham Cluley - chuyen gia tu van cong nghe cao cap cua
Sophos - cho biet.
"Chung toi hien van chua duoc ro ve tinh nang cua con virus nay. Thong
thuong dang virus kieu nay se tien hanh cai mot phan mem keylogger len he thong
bi nhiem de an cap thong tin hoac nham muc tieu thiet lap mot he thong PC ma
phuc vu cho cac vu tan cong tu choi dich vu".
"Chung toi cung chua the xac dinh duoc nguon goc," ong Hypponen cho
biet. "Rat kho co the phan tinh chinh xac ve con virus nay bang cac cong cu
thong thuong".
Con virus nay duoc luu tru tren mot so may chu tren toan cau khien cho cong viec
loai bo hoan toan no tro nen vo cung kho khan. Co ve nhu chung da duoc "cay" len
nhung may chu bi tan cong. SANS Internet Storm Center da yeu cau toi nhung nguoi
quan tri may chu bi nhiem kiem tra lai he thong va kiem tra nhat ky dang nhap he
thong.
Con virus chi tan cong duy nhat he dieu hanh Windows. "Microsoft da nhan
duoc thong tin ve con virus va dang tien hanh dieu tra cu the," nguoi phat
ngon cua hang khang dinh.
Cac chuyen gia bao mat khuyen cao nguoi dung chi nen truy cap vao website chinh
thuc cua Microsoft de tai ve phien ban trinh duyet moi nhat. Hien phien ban IE 7
chinh thuc da ra mat khong con trong qua trinh thu nghiem.
Theo PC World, VnMedia
Article source http://w4rum.com/1184.t
| 