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Malware Dropper

May 13, 2020Luke Leal

B374k Web Shell Packer

PHP web shells are a type of backdoor which, when left on compromised websites, allow attackers to maintain unauthorized access after initial compromise. To further evade detection, attackers may also choose to keep a packer script on a compromised website instead of the actual PHP…

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Labs Note

April 21, 2020Krasimir Konov

Fake M-Shield WordPress Plugin

During a recent malware investigation, we found a fake WordPress plugin called M-Shield. We also found almost an identical plugin under the name kingof, with malicious code hosted in the…

Read More about Fake M-Shield WordPress Plugin

Labs Note

January 30, 2020Luke Leal

PHP Dropper Concealed in Malicious WordPress Plugin

Moe Obaid – an analyst from our Remediation Team – recently found a PHP dropper that had been installed as a malicious WordPress plugin. Unlike other fake plugins we’ve recently…

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Labs Note

July 31, 2019Krasimir Konov

Self-destruct malware

The majority of malware we find on compromised websites have been planted by bad actors with the intention of concealing and accessing backdoor access. During a recent investigation, we found…

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Labs Note

June 14, 2018Moe O

Fake Font Dropper

A website owner reached out to us to investigate a weird behavior on their site. It was randomly showing a popup window for a missing font and telling the visitors…

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Labs Note

May 31, 2017Yuliyan Tsvetkov

The elegant dropper – reusable code for PHP shell installation

During our malware research role, we analyze hundreds (if not thousands) of malware samples every day. Quite often, highly-obfuscated techniques are used by attackers to avoid detection and maintain access…

Read More about The elegant dropper – reusable code for PHP shell installation

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