<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span style="margin:0px;font-size:12pt;background-color:rgb(255, 255, 255)"><span style="margin:0px;background-color:rgb(255, 255, 255)"><span style="margin:0px;font-size:14.67px">Hello,</span></span><span style="margin:0px;background-color:rgb(255, 255, 255);display:inline !important"></span></span><span style="background-color:rgb(255, 255, 255);display:inline !important"></span>
<div style="margin:0px;font-size:12pt;background-color:rgb(255, 255, 255)">
<div style="margin:0px;font-size:15px;color:rgb(32, 31, 30);background-color:rgb(255, 255, 255)">
<div style="margin:0px;font-size:12pt;color:rgb(0, 0, 0)">
<div style="margin:0px;background-color:rgb(255, 255, 255)">
<div style="margin:0px;background-color:rgb(255, 255, 255)">
<div style="margin:0px;font-size:15px;color:rgb(32, 31, 30);background-color:rgb(255, 255, 255)">
<div style="margin:0px;font-size:12pt;color:rgb(0, 0, 0)">
<div style="margin:0px;background-color:rgb(255, 255, 255)">
<div style="margin:0px;color:black;background-color:rgb(255, 255, 255)">
<div style="margin:0px;font-size:15px;color:rgb(32, 31, 30);background-color:white">
<div style="margin:0px;font-size:12pt;color:black"><span style="margin:0px;background-color:white"></span>
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;font-size:15px;color:rgb(32, 31, 30);background-color:white">
<div style="margin:0px;font-size:12pt;color:black">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;font-size:15px;color:rgb(32, 31, 30);background-color:white">
<div style="margin:0px;font-size:12pt;color:black">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;font-size:15px;color:rgb(32, 31, 30);background-color:white">
<div style="margin:0px;font-size:12pt;color:black">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;font-size:15px;color:rgb(32, 31, 30);background-color:white">
<div style="margin:0px;font-size:12pt;color:black">
<div style="margin:0px;background-color:white">
<div style="margin:0px;font-size:15px;color:rgb(32, 31, 30);background-color:white">
<div style="margin:0px;font-size:12pt;color:black">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;background-color:white">
<div style="margin:0px;font-size:15px;color:rgb(32, 31, 30);background-color:white">
<div style="margin:0px;font-size:12pt;color:black"><span style="margin:0px;background-color:white"></span>
<div style="margin:0px;background-color:white">
<div style="margin:0px;font-size:14.67px;background-color:white">I hope everyone is doing well!</div>
<div style="margin:0px;font-size:14.67px;background-color:white"><br>
</div>
<div style="margin:0px;font-size:14.67px;background-color:white">Below is the entry for today.</div>
<div style="margin:0px;font-size:14.67px;background-color:white"><br>
</div>
<div style="margin:0px;font-size:14.67px;background-color:white">09/20/2021 - Diary entry #351<br>
<br>
</div>
<blockquote style="font-size:14.67px;background-color:white;margin-top:0px;margin-bottom:0px">
<div style="margin:0px"></div>
<div style="margin:0px"></div>
In our Daily Diaries #346, #268 and others we covered a few Brazilian banking trojans. Active since 2018, Numando is another banking malware from Brazil, that was discovered targeting multiple Latin America companies.
<div><br>
</div>
<div>Numando works very similar to other Brazilian banking trojan. It's written in Delphi, and after infecting the machine, it stays hidden waiting for the user to log into their Internet Banking. When a connection with a targeted website is started, the malware
sends a ping to the C&C server. The attacker then watches the user screen, and uses the trojan to project an overlay screen and lock the user keyboard and mouse, enabling him to transfer the money to a controlled account without the user's knowledge.</div>
<div><br>
</div>
An interesting feature of Numando is how it stores its configuration file. Upon execution, it contacts a Pastebin or a Youtube address, where it parses the C&C address from the page content. This malware is mainly distributed through spam e-mails, and their
execution involves multiple stage payloads and strong obfuscation techniques, using content hidden inside trusted files and side-loading to load malicious code into trusted applications.
<div style="margin:0px"></div>
<div style="margin:0px"></div>
<span style="margin:0px"></span>
<div style="margin:0px"><br>
</div>
</blockquote>
<span style="margin:0px;font-size:14.67px;background-color:white">Kind Regards,</span></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
</div>
<div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div id="Signature">
<div>
<div></div>
<div></div>
<div></div>
<div></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<table style="font-family:"Times New Roman"; font-size:medium; text-align:start">
<tbody>
<tr>
<td width="180" align="left" style="width:180px">
<table width="120" align="left">
<tbody>
<tr>
<td colspan="3" align="center"><a href="https://www.appgate.com/"><img alt="" width="120" height="30" src="https://d3aafpijpsak2t.cloudfront.net/images/Signature/logo@2x.png"></a></td>
</tr>
<tr>
<td colspan="3" align="center"> </td>
</tr>
<tr>
<td width="37%" align="center"><a href="https://www.linkedin.com/company/appgate-security/"><img width="18" height="18" alt="" src="https://d3aafpijpsak2t.cloudfront.net/images/Signature/likedin@2x.png"></a></td>
<td width="28%"><a href="https://twitter.com/AppgateSecurity"><img width="20" height="18" alt="" src="https://d3aafpijpsak2t.cloudfront.net/images/Signature/twitter@2x.png"></a></td>
<td width="35%"><a href="https://www.youtube.com/channel/UC-8GvxcZbm-R3EJNl8jYjiQ"><img width="26" height="18" alt="" src="https://d3aafpijpsak2t.cloudfront.net/images/Signature/youtube@2x.png"></a></td>
</tr>
</tbody>
</table>
<p> </p>
</td>
<td width="350" colspan="2" rowspan="2" style="width:350px">
<p style="font-family:Arial,Helvetica,sans-serif; font-size:13px; color:rgb(12,12,12)">
<strong>Felipe Duarte Domingues</strong><br>
Security Researcher<br>
<strong>Appgate</strong></p>
<p style="font-family:Arial,Helvetica,sans-serif; font-size:13px; color:rgb(12,12,12)">
E:<span> </span><font color="#228ebe"><a href="mailto:felipe.duarte@appgate.com" title="mailto:felipe.duarte@appgate.com">felipe.duarte@appgate.com</a></font><br>
O: <span style="background-color:rgb(255,255,255); display:inline!important">+55 19 98840 2509</span></p>
</td>
</tr>
</tbody>
</table>
<br>
</div>
</div>
</div>
</div>
</body>
</html>