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Researchers Uncover Obfuscated Malicious Code in PyPI Python Packages

Researchers Uncover Obfuscated Malicious Code in PyPI Python Packages

Feb 10, 2023 Supply Chain / Software Security
Four different rogue packages in the Python Package Index ( PyPI ) have been found to carry out a number of malicious actions, including dropping malware, deleting the netstat utility, and manipulating the SSH authorized_keys file. The packages in question are  aptx ,  bingchilling2 ,  httops , and  tkint3rs , all of which were collectively downloaded about 450 times before they were taken down. While aptx is an attempt to impersonate Qualcomm's  highly popular audio codec  of the same name, httops and tkint3rs are typosquats of https and tkinter, respectively. "Most of these packages had well thought out names, to purposely confuse people," security researcher and journalist Ax Sharma  said . An analysis of the malicious code injected in the setup script reveals the presence of an obfuscated  Meterpreter payload  that's disguised as " pip ," a legitimate package installer for Python, and which can be leveraged to gain shell access to the infected host.
Researchers Uncover 3 PyPI Packages Spreading Malware to Developer Systems

Researchers Uncover 3 PyPI Packages Spreading Malware to Developer Systems

Jan 17, 2023 Software Security / Supply Chain
A threat actor by the name  Lolip0p  has uploaded three rogue packages to the Python Package Index (PyPI) repository that are designed to drop malware on compromised developer systems. The packages – named  colorslib  (versions 4.6.11 and 4.6.12),  httpslib  (versions 4.6.9 and 4.6.11), and  libhttps  (version 4.6.12) – by the author between January 7, 2023, and January 12, 2023. They have since been yanked from PyPI but not before they were cumulatively downloaded over 550 times. The modules come with identical setup scripts that are designed to invoke PowerShell and run a malicious binary (" Oxzy.exe ") hosted on Dropbox, Fortinet  disclosed  in a report published last week. The executable, once launched, triggers the retrieval of a next-stage, also a binary named  update.exe , that runs in the Windows temporary folder ("%USER%\AppData\Local\Temp\"). update.exe is flagged by antivirus vendors on VirusTotal as an information stealer that's also capable of
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Malicious PyPI Packages Using Cloudflare Tunnels to Sneak Through Firewalls

Malicious PyPI Packages Using Cloudflare Tunnels to Sneak Through Firewalls

Jan 09, 2023 Network Security / Supply Chain
In yet another campaign targeting the Python Package Index (PyPI) repository, six malicious packages have been found deploying information stealers on developer systems. The now-removed packages, which were  discovered  by Phylum between December 22 and December 31, 2022, include pyrologin, easytimestamp, discorder, discord-dev, style.py, and pythonstyles. The malicious code, as is  increasingly the case , is concealed in the setup script (setup.py) of these libraries, meaning running a "pip install" command is enough to activate the malware deployment process. The malware is designed to launch a PowerShell script that retrieves a ZIP archive file, install invasive dependencies such as pynput, pydirectinput, and pyscreenshot, and run a Visual Basic Script extracted from the archive to execute more PowerShell code. "These libraries allow one to control and monitor mouse and keyboard input and capture screen contents," Phylum said in a technical report published
Hackers Bombard Open Source Repositories with Over 144,000 Malicious Packages

Hackers Bombard Open Source Repositories with Over 144,000 Malicious Packages

Dec 15, 2022
NuGet, PyPi, and npm ecosystems are the target of a new campaign that has resulted in over 144,000 packages being published by unknown threat actors. "The packages were part of a new attack vector, with attackers spamming the open source ecosystem with packages containing links to phishing campaigns," researchers from Checkmarx and Illustria  said  in a report published Wednesday. Of the  144,294 phishing-related packages  that were detected, 136,258 were published on NuGet, 7,824 on PyPi, and 212 on npm. The offending libraries have since been unlisted or taken down. Further analysis has revealed that the whole process was automated and that the packages were pushed over a short span of time, with a majority of the usernames following the convention "<a-z><1900-2022>." The fake packages themselves claimed to provide hacks, cheats, and free resources in an attempt to trick users into downloading them. The URLs to the rogue phishing pages were embed
Researchers Uncover 29 Malicious PyPI Packages Targeted Developers with W4SP Stealer

Researchers Uncover 29 Malicious PyPI Packages Targeted Developers with W4SP Stealer

Nov 05, 2022
Cybersecurity researchers have uncovered 29 packages in Python Package Index (PyPI), the official third-party software repository for the Python programming language, that aim to infect developers' machines with a malware called W4SP Stealer . "The main attack seems to have started around October 12, 2022, slowly picking up steam to a concentrated effort around October 22," software supply chain security company Phylum  said  in a report published this week. The list of offending packages is as follows: typesutil, typestring, sutiltype, duonet, fatnoob, strinfer, pydprotect, incrivelsim, twyne, pyptext, installpy, faq, colorwin, requests-httpx, colorsama, shaasigma, stringe, felpesviadinho, cypress, pystyte, pyslyte, pystyle, pyurllib, algorithmic, oiu, iao, curlapi, type-color, and pyhints. Collectively, the packages have been downloaded more than 5,700 times, with some of the libraries (e.g., twyne and colorsama) relying on typosquatting to trick unsuspecting users
Several Malicious Typosquatted Python Libraries Found On PyPI Repository

Several Malicious Typosquatted Python Libraries Found On PyPI Repository

Jul 30, 2021
As many as eight Python packages that were downloaded more than 30,000 times have been removed from the PyPI portal for containing malicious code, once again highlighting how software package repositories are evolving into a popular target for supply chain attacks. "Lack of moderation and automated security controls in public software repositories allow even inexperienced attackers to use them as a platform to spread malware, whether through typosquatting, dependency confusion, or simple social engineering attacks," JFrog researchers Andrey Polkovnichenko, Omer Kaspi, and Shachar Menashe  said  Thursday. PyPI, short for Python Package Index, is the official third-party software repository for Python, with package manager utilities like  pip  relying on it as the default source for packages and their dependencies. The Python packages in question, which were found to be obfuscated using Base64 encoding, are listed below - pytagora (uploaded by leonora123) pytagora2 (upl
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