Topic: [closed] Malicious split-off from system-partition, BlackSOD
Recently I had, after booting Win7 and giving my log-in password, a fully black screen. This seemed to me the now in discussion "Black Screen Of Death" (with Windows).
Previously I had been using uTorrent in the newest version. After and during torrenting I found my system very sluggish and my firewall (Comodo) was "stalled" (I have now a suspection about the new uTorrent safety).
I decided to run eScan (a CD-Win-bootable virus-scanner), it stated with a checkdisk which ran very quick, so unreadable, however I thought to seen more info than normally with a chkdsk. It did not find any problem.
I think that after this the BlackSOD was present (I am not sure about that).
After that I ran BitDefender (a CD-Linux-bootable virus scanner). It did find 2 items (minor) however it did not solve my problem.
Then I started my USB-bootable GParted (the previous version).
It started and found that my original system partition was now split into a first very small bootable partition (~1-2 MB), the remains of my system-partition now had the "name2" (not bootable), the data-partition seemed as earlier (so not changed).
I am absolutely sure that I did not create this split-off small partition myself.
Probably the Win7 booting till the log-in-screen was in the small partition, the rest of the booting (after giving the login-password) was probably in the 2-nd partition. So this is probably why the booting halted after giving the login, with a black screen.
Probably if I could have joined the split-off partition with the rest of the system partition, the booting would have run normally again ??!!
However there is some extra info against this solution.
Initially I deleted the small bootable partition and flagged the remaining original system partition as bootable (at that time I did not realize that this small partition had a part of the original systems-files). Booting then failed totally.
Then I tried to boot again from my USB-bootable-GParted.
To my horror and disbelief it failed to boot, later I found that the USB-stick was "not formatted" so the bootable GParted had been destroyed, probably when I was connected at the first session when I deleted the small split-off-partition.
I then took an older rescue-CD (so no USB-with-write-access), with an older version of GParted. It booted ok and started GParted ok.
I deleted also the remaining system-partition, recreated a new partition (for re-installing Win7) and formatted it in a row with every system possible (ext2, ext3, xfs, .....) , then ntfs as last. This in the hope to destroy any possible malware in the MFT-area.
I then started my USB-bootable Win7-install.
To my disbelieve it reported errors in the install-files on the USB-stick.
I messed then around, rebooted a few times, restored the BIOS to original, and finally surprisingly the install seemed to run as it should.
I think a very nasty malware was present, which was aware that I was attacking with tools (GParted and reinstall the OS) to remove the malware-structure.
So my question is if you can incorporate to join 2 partitions without data-loss.
So that a malicious split (system)-partition can be restored to the previous original.
And can you make the partition check that the above malicious situation is detected and repaired.
I must however admit that if the above is really the result of very sneaky malware, probably this situation is too much for GParted.