A new document royal road v7 installs a backdoor in .NET. a first executable is dropped \os03C2.tmp. This exe has many similarities with…

HelloKitty lacks the stealth of Ryuk, REvil and Conti, but has still struck some notable targets, including CEMIGO. Ransomware overview and IoCs here.

This blog details how Iron Tiger threat actors have updated their toolkit with an updated SysUpdate malware variant that now uses five files in its infection routine instead of the usual three.

Proofpoint researchers identified a new variant of the Buer malware loader distributed via emails masquerading as shipping notices in early April.

In a highly targeted operation by a Chinese APT, a newly discovered backdoor dubbed PortDoor is being used in attacks targeting a Russian defense contractor...

Microsoft has identified three new pieces of malware being used in late-stage activity by NOBELIUM – the actor behind the SolarWinds attacks, SUNBURST, and TEARDROP.

Learn how the Falcon Complete Team detected the SolarMarker Backdoor using the Falcon UI, our deobfuscation process, and how we collaborated with our Intel team.

In late February, while tracking a malicious spam campaign from the Qakbot distributor “TR,” Binary Defense’s analysts identified a new version of IcedID being delivered through malicious Word and Excel files. The updated IcedID has a new first stage loading mechanism, which we’ve dubbed “gziploader,” along with new encryption algorithms for hiding its configuration and […]

In this blog, we cover all things GuLoader – a new malware family – including its main shellcode, anti-analysis techniques and final payload delivery mechanism.

Introduction Rootkits are dangerous pieces of malware. Once in place, they are usually really hard to detect. Their code is typically more challenging to write than other malware, so developers resort to code reuse from open source projects. As rootkits are very interesting to analyze, we are always looking out for these kinds of samples […]

BPFDoor is an stealthy Linux backdoor operating for years undetected. We disclose full technical details and detection techniques here.

Evasion techniques

Windows kernel and user mode emulation. Contribute to mandiant/speakeasy development by creating an account on GitHub.

The FLARE team's open-source tool to identify capabilities in executable files. - mandiant/capa: The FLARE team's open-source tool to identify capabilities in executable files.

At the beginning of April, Carbon Black Threat Research began analyzing a malware variant commonly referred to as Red Leaves, which appears to have code reuse from the PlugX family. During the last month, this malware family has been referenced in several security blogs and government