
Pozor na zákeřný malware: Policie varuje občany před šířením škodlivého kódu tzv. ransomware
V posledních dnech policie zaznamenala hromadné napadení počítačů škodlivým kódem označovaným jako ransomware. Předmětem těchto rozesílaných e-mailových zpráv je aplikace pro sledování zásilek, velmi podobná aplikaci, kterou provozuje Česká pošta. Po otevření tohoto odkazu, je uživatel vybízen k vypsání vygenerované číslice a stáhnutí si této aplikace. Následně je uživateli zpřístupněn komprimovaný soubor, obsahující tabulkový dokument, který po otevření zašifruje soubory daného počítače a omezí jeho použitelnost. Pro obnovení těchto souborů je uživatel následně vybízen k zaplacení určité částky.
Dávám to sem proto, že se tady někdo nedávno se "zašifrovaným" PC vyskytnul.
Jak to funguje?
Jak muze tabulkovy dokument zasifrovat soubory na disku? Ma to teda skrytou priponu souboru (chyba Microsoftu potazmo uzivatele) exe nebo snad MS Office umi skrz skriptovaci jazyk sifrovat soubory, takze pokud uzivatel nema MS Office nic mu nehrozi?
Pominu to, ze si normalni uzivatel nebude nic takoveho stahovat do sveho PC.
Já to zkoušel a zašifroval jsem si zkušebně virtuálku
. V tom archivu není tabulkový dokument, ale klasické exe ve tvaru: zásilka_0123456789.exe
Diky, takze uz je to jasne, nejedna se o tabulkovy dokument a nic se samo nespusti, uzivatel musi byt idiot, ze si spusti exe soubor o kterem nic nevi, potazmo se jedna o bezpecnostni chybu Microsoftu, protoze skryva pripony souboru a dovoli spusteni neznameho exe souboru na jeden klik.
A to má microsoft i lidem utírat zadek?
Když už redmondský os pracuje s CP/M extenzemi, pak je nemá co skrývat! Tahle debilita je tuším už od W95.
Doplňující odkaz VIRY.CZ s dobrou diskuzí (zkušenosti s virem) http://www.viry.cz/sledovani-zasilky-ceske-posty-a neb-nova-havet/
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