Tag Archives: windows 7

Dissecting a Windows malware

chromeupdatecenter.com Screenshot

Through a friend of my I got to this seemingly fresh malware named GoogleChromeUpdater.exe. The page (URL see at the end of the post) claims to distribute a important Chrome Update. However, the malware encrypt files and left an E-Mail address, the classic file kidnapping along with blackmailing.

Note: If you are infected by this malware your chances are bad to get back your data. The encryption key is likely only stored on the attackers server. Unless somebody breaks the encryption, you cannot restore your data. And of course, you should not feed criminals! 🙂

I could not resist and had to have a closer look at the malware…

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Switching Windows 7 and Ubuntu to UEFI



After upgrading my hard disk on my Laptop I planned to switch to a GPT (GUID Partition Table). But since I’ve a Windows 7 installation as well I had to switch to UEFI boot mode because Windows 7 does not support booting from GPT using the old BIOS/MBR bootmanager/bootloader (You can find a good Q&A about GPT support of Windows at MSDN). Luckily my old HP Elitebook 8530w already includes an UEFI enabled BIOS (without Secure Boot). It supports (like many others) the old boot mode as well as the new UEFI boot mode. By selecting the “UEFI” entry in the boot menu one can make sure that the UEFI boot mode is enabled. After reading some documentation (especially the once from Roderick W. Smith) I decided to use the rEFInd boot manager and the kernel provided EFI stub bootloader (part of the mainline kernel since 3.3.0). I’m using Ubuntu 12.10 which comes with Linux 3.5 and enabled EFI stub bootloader in the stock kernel… Read more »