Python (ab)using The Windows GUI
A quick diary to wrap-up the week with a nice Python script that interacts with the victim. Most malicious scripts try to remain below the radar to perform their nasty tasks. I found a Python script that has some interesting features. The file has a VT score of 10/55 (SHA256:e21f6c09fb1658397d0996751f4c79114f50a0853668227c1c589fb716b31603)[1]. The core feature is this script is to implement a keylogger but it has interesting capabilities.
First, it retrieves its C2 server via a simple HTTP request and extract it from the returned HTML code:
The protocol implemented with the C2 servers is very simple and seems to be "homemade", just a TCP session waiting for commands based on single letters:
There are classic commands to start/stop the keylogger, to upload/download files but you can also interact with the Windows 10 GUI. There is an interesting Python module loaded: "win10toast_click"[2]. This module helps to display Windows Toast notifications[3] like this example:
Here is the code used by the malicious script:
The attacker will display a notification to the victim and, if clicked, a browser will be launched with a (probably malicious) webpage with the help of the web-browser module[4]. This is perfect to conduct social engineering attacks and, for example, ask the user to leave credentials on a rogue site.
[1] https://www.virustotal.com/gui/file/e21f6c09fb1658397d0996751f4c79114f50a0853668227c1c589fb716b31603/detection
[2] https://pypi.org/project/win10toast-click/
[3] https://docs.microsoft.com/en-us/windows/apps/design/shell/tiles-and-notifications/adaptive-interactive-toasts?tabs=builder-syntax
[4] https://docs.python.org/3/library/webbrowser.html
Xavier Mertens (@xme)
Xameco
Senior ISC Handler - Freelance Cyber Security Consultant
PGP Key
Comments
Anonymous
Dec 3rd 2022
10 months ago
Anonymous
Dec 3rd 2022
10 months ago
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<a hreaf="https://technolytical.com/">the social network</a> is not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go. The social networks only collect the minimum amount of information required for the service that they provide. Your personal information is kept private, and is never shared with other companies without your permission
Anonymous
Dec 26th 2022
9 months ago
Anonymous
Dec 26th 2022
9 months ago
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<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> public bathroom near me</a>
Anonymous
Dec 26th 2022
9 months ago
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> nearest public toilet to me</a>
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> public bathroom near me</a>
Anonymous
Dec 26th 2022
9 months ago
Anonymous
Dec 26th 2022
9 months ago
https://defineprogramming.com/
Dec 26th 2022
9 months ago
distribute malware. Even if the URL listed on the ad shows a legitimate website, subsequent ad traffic can easily lead to a fake page. Different types of malware are distributed in this manner. I've seen IcedID (Bokbot), Gozi/ISFB, and various information stealers distributed through fake software websites that were provided through Google ad traffic. I submitted malicious files from this example to VirusTotal and found a low rate of detection, with some files not showing as malware at all. Additionally, domains associated with this infection frequently change. That might make it hard to detect.
https://clickercounter.org/
https://defineprogramming.com/
Dec 26th 2022
9 months ago
rthrth
Jan 2nd 2023
9 months ago