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    Chinese PC manufacturer Lenovo is the latest high-profile company to be compromised. Sometime over the past weekend, its support pages, which allowed users to download drivers and manuals, were compromised with the addition of a malicious iframe.

    The website in this malicious iframe led to the download of a BREDOLAB variant detected as TROJ_BREDOLAB.BY. This malware family is well-known for being a downloader of other malware onto affected systems, particularly ZBOT and FAKEAV variants.

    BREDOLAB first gained prominence in late 2009 when the number of reported infections significantly grew. Upon investigation by senior advanced threats researcher David Sancho, it was found that BREDOLAB was a new malware family similar to earlier PUSHDO variants.

    Later investigations by senior advanced threats researcher Loucif Kharouni established the key role BREDOLAB plays in the criminal underworld. As mentioned earlier, cybercriminals running pay-per-install (PPI) scams frequently use BREDOLAB to infect user systems.


    Lenovo has acknowledged the incident on its official forum and has indicated that the affected pages have now been cleaned. Reports from Vietnamese antivirus vendor Bkis indicated that the pages have been infected since at least Sunday afternoon. Some users also reported getting antivirus warnings while visiting Lenovo’s download website since Saturday.

    Users who did go to the Lenovo pages to download support materials from late on June 18 (Friday) to June 21 (Monday) may have been affected by this compromise and should check their systems accordingly.

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