Forum Discussion

bwanshoom's avatar
bwanshoom
Explorer
Sep 18, 2017

Heads Up: CCleaner Infected

I know that CCleaner is popular on this forum. For almost a month it was compromised and installing malware. This is quite serious - it means that Piriform's development servers were probably compromised. CCleaner is owned by Avast which would also be a great target for the bad guys. It doesn't appear that Avast detected this on their own which is also troubling.

Link
  • SidecarFlip's avatar
    SidecarFlip
    Explorer III
    Sep 18, 2017
    My Norton 360 caught it right away and I did the upgrade and no issues now. Kind of wondering about the CCleaner on my Android phone.
  • bwanshoom's avatar
    bwanshoom
    Explorer
    Sep 18, 2017
    1492 wrote:
    If I'm reading Cisco Talos correctly, if one has an infected version of CCleaner, they recommend rolling back (System Restore) before August 15, 2017. Or do a "re-install". :E
    That is what they're recommending. Note that that is in stark contrast to Avast's claims that just reinstalling CCleaner is sufficient. I don't think I trust Avast in this instance - I think they're statements are self-serving and disingenuous.
  • 1492's avatar
    1492
    Moderator
    Sep 18, 2017
    If I'm reading Cisco Talos correctly, if one has an infected version of CCleaner, they recommend rolling back (System Restore) before August 15, 2017. Or do a "re-install". :E
  • pbitschura's avatar
    pbitschura
    Explorer
    Sep 18, 2017
    https://www.forbes.com/sites/thomasbrewster/2017/09/18/ccleaner-cybersecurity-app-infected-with-backdoor/#56e73ce1316a

    Don't update. Uninstall and do a new install of the repaired version.

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