On the 9th of October our customers started reporting the same kind of incident over the span of a few hours. The identified activity appears to be linked to the banking Trojan Ursnif, a long active malware, whose roots can be traced back to 2007 together with ZeuS and SpyEye, still with strong infection capabilities in each of its campaigns. The attack vector was a malicious email with a Word document attached.
Continue reading “Ursnif reloaded: tracing the latest trojan campaigns”
Dridex is currently one of the most active and widespread banking malwares. Like Locky ransomware also Dridex is dispatched through a massive spam mail campaign that uses the Necurs botnet. Our sensors have long been tracking these spam campaigns and recent captured emails contain a Word document that drops Dridex. In our latest samples we have observed a delay on execution of the downloader stage that wasn’t present before, we have further investigated to figure out whether Dridex’s authors were experimenting with new, even if basic, anti-sandbox techniques.
Continue reading “Dridex Downloader Tries New Sandbox-Evasion Techniques”