In July, we came across a phishing email purporting to be a new order notification, which contains a malicious attachment that leads to the remote access tool Remcos RAT (detected by Trend Micro as BKDR_SOCMER.SM). This attack delivers Remcos using an AutoIT wrapper that incorporates various obfuscation and anti-debugging techniques to evade detection, which is a common method for distributing known malware.
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While none of the vulnerabilities were listed as under active attack at the time of August Patch Tuesday release, a few of the bugs addressed this month fall under the “wormable” category, namely remote code execution (RCE) vulnerabilities in the Remote Desktop Services. This month’s Patch Tuesday also disables the scripting language VBScript by default on Internet Explorer on Windows 7, 8, and 8.1.
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By Augusto Remillano II and Jakub Urbanec Within a span of three weeks, our telemetry uncovered three notable malware variants of Neko, Mirai, and Bashlite. On July 22, 2019, we saw and started analyzing a Neko botnet sample, then observed another sample with additional exploits the following week. A Mirai variant that calls itself “Asher”…
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Our fuzzing methodology LLDBFuzzer found dozens of vulnerabilities, including double free and out-of-bounds (OOB) read/write bugs. These vulnerabilities could allow an attacker access to restricted memory or be used in a privilege escalation attack.
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First advertised as an information stealer and keylogger when it first appeared in underground forums, LokiBot has added various capabilities over the years. Recent activity has seen the malware family abusing Windows Installer for its installation and introducing a new delivery method that involves spam mails containing malicious ISO file attachments. Our analysis of a new LokiBot variant shows that it has improved its capabilities for staying undetected within a system via an updated persistence mechanism and the use of steganography to hide its code.
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