New Lilith ransomware in early development

The Sonicwall CaptureLabs threat research team has observed reports of the launch of a new ransomware family named Lilith.  Lilith ransomware is written in C/C++ and targets 64-bit Windows machines.  Encrypted files are marked with a  “.lilith” extension.  The sample we obtained indicates that it is in early development, as some features reported in the AV community were not present during our analysis.

Infection Cycle:

Upon running the executable, files on the system are encrypted

Restore_Your_Files.txt contains the following message:

During our analysis, no data was leaked from the system.

The .onion link leads to the following Lilith home page:

This page appears to be a placeholder and does not contain any functionality yet.  It is speculated that this may become an extortion page that threatens to leak victim data.

The following programs are terminated if they are running:

Restore_Your_files.txt is dropped into each directory that contains encrypted files:

Each encrypted file is given a .lilith extension:

We reached out to the operators via the supplied tox ID in the ransom note but received no response.

SonicWall Capture Labs provides protection against this threat via the following signature:

• GAV: Lilith.RSM (Trojan)

This threat is also detected by SonicWall Capture ATP w/RTDMI and the Capture Client endpoint solutions.

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The SonicWall Capture Labs Threat Research Team gathers, analyzes and vets cross-vector threat information from the SonicWall Capture Threat network, consisting of global devices and resources, including more than 1 million security sensors in nearly 200 countries and territories. The research team identifies, analyzes, and mitigates critical vulnerabilities and malware daily through in-depth research, which drives protection for all SonicWall customers. In addition to safeguarding networks globally, the research team supports the larger threat intelligence community by releasing weekly deep technical analyses of the most critical threats to small businesses, providing critical knowledge that defenders need to protect their networks.