Security Experts:

Connect with us

Hi, what are you looking for?


Malware & Threats

PyPI Users Targeted With ‘Wacatac’ Trojan in New Supply Chain Attack

Fortinet warned of three malicious PyPI packages containing code that fetches the Wacatac trojan and information stealer.

Fortinet warns of three new malicious PyPI packages containing code designed to fetch the Wacatac trojan and information stealer as a next stage payload.

The three Python packages, ‘colorslib’, ‘httpslib’ and ‘libhttps’ were uploaded to PyPI (Python Package Index) on January 7 and January 12.

All three packages were published by the same author from a user account named ‘Lolip0p’, which joined the repository shortly before the packages were published.

The Python packages feature legitimate-looking descriptions, meant to trick users into believing they are clean. However, Fortinet discovered that all versions of these packages are, in fact, malicious.

Each package, the cybersecurity firm says, contains the same script and attempt to run a PowerShell script to download an executable binary from an external link.

The download URL has not been flagged as malicious by any of the antivirus products on VirusTotal, but the downloaded file is detected as malicious by a few of them.

Named ‘Oxyz.exe’, the executable has been designed to download another binary, called ‘update.exe’, which is executed from the victim’s temp folder. The binary drops additional files in the same folder.

Both the binary and one of the executables it fetches (SearchProtocolHost.exe) are flagged by several antivirus tools as ‘Wacatac’, a trojan and information stealer that targets login credentials, banking information, and other sensitive information.

Wacatac can also be used to deploy additional malware on the victim’s machine, including ransomware, and perform other “actions of a malicious hacker’s choice”, according to Microsoft.

“Python end users should always perform due diligence before downloading and running any packages, especially from new authors. And as can be seen, publishing more than one package in a short time period is no indication that an author is reliable,” Fortinet concludes.

Related: PyPI Users Targeted With PoweRAT Malware

Related: Malicious PyPI Module Poses as SentinelOne SDK

Related: Python, JavaScript Developers Targeted With Fake Packages Delivering Ransomware

Related: Security Firms Find Over 20 Malicious PyPI Packages Designed for Data Theft

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

Click to comment

Expert Insights

Related Content

Malware & Threats

Microsoft plans to improve the protection of Office users by blocking XLL add-ins from the internet.


CISA, NSA, and MS-ISAC issued an alert on the malicious use of RMM software to steal money from bank accounts.


Chinese threat actor DragonSpark has been using the SparkRAT open source backdoor in attacks targeting East Asian organizations.

Application Security

A new report finds that barely 1% of all SBOMs being generated today meets the “minimum elements” defined by the U.S. government.

Supply Chain Security

Oracle's Critical Patch Update for January 2023 includes 327 patches, with more than 70 that address critical-severity vulnerabilities.

Application Security

Electric car maker Tesla is using the annual Pwn2Own hacker contest to incentivize security researchers to showcase complex exploit chains that can lead to...

Malware & Threats

Cybercrime in 2017 was a tumultuous year "full of twists and turns", with new (but old) infection methods, a major return to social engineering,...

Malware & Threats

Norway‎-based DNV said a ransomware attack on its ship management software impacted 1,000 vessels.