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<a class="moz-txt-link-freetext" href="http://www.trendmicro.com/vinfo/us/security/news/cyber-attacks/operation-tropic-trooper-infiltrates-secret-keepers">http://www.trendmicro.com/vinfo/us/security/news/cyber-attacks/operation-tropic-trooper-infiltrates-secret-keepers</a><br>
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    The Trojan, TROJ_YAHOYAH, eventually downloads and decrypts a
    malicious image or decoy file. The downloaded images appear harmless
    and look similar to default wallpapers in Windows XP systems.
    However, encrypted into them via simple steganography is
    BKDR_YAHAMAM, a malware that steals data from the system, kills
    processes and services, deletes files and directories, puts systems
    to sleep, and performs other backdoor capabilities."<br>
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