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MALICIOUS ‘LOLIP0P’ PYPI PACKAGES INSTALL INFO-STEALING MALWARE
By
BILL TOULAS
* January 16, 2023
* 11:41 AM
* 1
A threat actor has uploaded to the PyPI (Python Package Index) repository three
malicious packages that carry code to drop info-stealing malware on developers'
systems.
The malicious packages, discovered by Fortinet, were all uploaded by the same
author named 'Lolip0p' between January 7 and 12, 2023. Their names are
'colorslib,' 'httpslib,' and 'libhttps.' All three have been reported and
removed from the PyPI.
PyPI is the most widely used repository for Python packages that software
developers use to source the building blocks of their projects.
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Unfortunately, its popularity makes it a attractive for threat actors targeting
developers or their projects. Typically, malicious packages are uploaded
masquerading as something useful or they mimic renowned projects by modifying
their name.
PyPI doesn't have the resources to scrutinize all package uploads, so it relies
on user reports to find and remove malicious files. By the time they are
deleted, though, the bad packages usually count several hundred downloads.
NEW CAMPAIGN
Contrary to the typical malicious uploads on PyPI, the trio that Fortinet
discovered features complete descriptions, which helps trick developers into
believing they're genuine resources.
Malicious package description on PyPI (Fortinet)
In this case, the names of the packages do not mimic other projects but seek to
convince they come with reliable, risk-free code.
According to PyPI package stat counting service 'pepy.tech,' the three malicious
entries had the following download counts by the time they were removed on
Sunday, January 14.
* Colorslib – 248 downloads
* httpslib – 233 downloads
* libhttps – 68 downloads
Although the number of downloads may seem small, the potential impact of these
infections as part of a supply chain makes them significant.
All three packages feature the same malicious 'setup.py' file that attempts to
run PowerShell that fetches an executable from a suspicious URL, named
'Oxyz.exe.' This piece of malware steals browser information.
BleepingComputer found that Oxyz.exe is also spread as a free Discord Nitro
generator.
That second file is flagged by a few vendors on VirusTotal as
malicious. Fortinet says 'update.exe' drops several additional files on the
host, one of which ('SearchProtocolHost.exe'), which is flagged as malicious by
some AV vendors as an info-stealer.
Files 'update.exe' drops on the host (Fortinet)
Looking a little further, BleepingComputer found that at least one of the
dropped processes is used to collect Discord tokens, suggesting that is part of
a general information-stealing malware campaign used to steal browser data,
authentication tokens, and other data from an infected device.
The detection rates for all three executables used in this attack are quite low,
ranging between 4.5% and 13.5%, allowing the malicious files to evade detection
from multiple security agents that may be running on the victim host.
Detection results for 'update.exe' on VirusTotal (Fortinet)
Unfortunately, even after removing those packages from the PyPI, threat actors
can still re-upload them at a later time under a different name.
To ensure the safety and security of their projects, software developers should
pay attention selecting packages for download. This includes checking the
package's authors and reviewing the code any suspicious or malicious intent.
RELATED ARTICLES:
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BILL TOULAS
Bill Toulas is a technology writer and infosec news reporter with over a decade
of experience working on various online publications. An open source advocate
and Linux enthusiast, is currently finding pleasure in following hacks, malware
campaigns, and data breach incidents, as well as by exploring the intricate ways
through which tech is swiftly transforming our lives.
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COMMENTS
* DELEMIADES - 1 DAY AGO
*
*
Hi,
so, which is it? Oxyz.exe or Oxzy.exe? People at Fortinet can't make up their
minds.
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