Credential Harvesting with Telegram API
[This is a guest diary by Jesse LaGrew]
Phishing emails are a daily occurrence and many times it ends with credential harvesting. An email initially lures a user to a website that promised an anticipated file. The landing page taunts a user to click on an additional link and enter their credentials. In this case, the credentials entered by the user are not sent back to the bad actor using a simple web form but using the Telegram API [1].
Figure 1: Phishing Landing Site Screenshot
Looking at the source of the website, the URL encoding can make the text difficult to read.
Figure 2: URL Encoded Text Screenshot from Document Source
Within the URL decoded text, the destination for the input credentials can be found.
Figure 3: Telegram API URL for Credential Submission
Using the Proxy Intercept feature of Burp Suite can help to show the full Telegram API request. The response can also give some additional information about the bot account being used.
Figure 4: Telegram API Request in Burb Suite
Using the Telegram API for exfiltration is becoming much more common and API usage on your network may be a useful indicator. More information about this particular landing page can be found at URLScan [2].
Indicators
https://bitter-poetry-5215.westofsdfdsfd.workers[.]dev/
salmangreyBot (Telegram Bot)
[1] https://core.telegram.org/bots/api
[2] https://urlscan.io/result/c68bdef7-613b-4bad-a7fa-25c353842147/
Comments
Anonymous
Dec 3rd 2022
9 months ago
Anonymous
Dec 3rd 2022
9 months ago
<a hreaf="https://technolytical.com/">the social network</a> is described as follows because they respect your privacy and keep your data secure. The social networks are 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.
<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
8 months ago
Anonymous
Dec 26th 2022
8 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
8 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
8 months ago
Anonymous
Dec 26th 2022
8 months ago
https://defineprogramming.com/
Dec 26th 2022
8 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
8 months ago
rthrth
Jan 2nd 2023
8 months ago