General
-
Target
medusa.exe
-
Size
669KB
-
Sample
240411-xl1ypsdc9v
-
MD5
646698572afbbf24f50ec5681feb2db7
-
SHA1
70530bc23bad38e6aee66cbb2c2f58a96a18fb79
-
SHA256
26af2222204fca27c0fdabf9eefbfdb638a8a9322b297119f85cce3c708090f0
-
SHA512
89bad552a3c0d8b28550957872561d03bf239d2708d616f21cbf22e58ae749542b07eee00fedac6fdb83c5969f50ea0f56fc103264a164671a94e156f73f160a
-
SSDEEP
12288:dQA0FfTcwpBuV2UxqDmuiLZeUaoFi2XZWfGe615HhAZV8D4KD/KeX:Tuf4wTuV2Ux3uIZeUBi2Te6HWdKrKe
Score
10/10
Malware Config
Extracted
Path
\Device\HarddiskVolume1\Boot\how_to_back_files.html
Ransom Note
<html>
<style type="text/css">
body {
background-color: #f5f5f5;
}
h1, h3{
text-align: center;
text-transform: uppercase;
font-weight: normal;
}
/*---*/
.tabs1{
display: block;
margin: auto;
}
.tabs1 .head{
text-align: center;
float: top;
padding: 0px;
text-transform: uppercase;
font-weight: normal;
display: block;
background: #81bef7;
color: #DF0101;
font-size: 30px;
}
.tabs1 .identi {
font-size: 10px;
text-align: center;
float: top;
padding: 15px;
display: block;
background: #81bef7;
color: #DFDFDF;
word-break: break-all;
}
.tabs .content {
background: #f5f5f5;
/*text-align: center;*/
color: #000000;
padding: 25px 15px;
font-size: 15px;
font-weight: 400;
line-height: 20px; }
.tabs .content a {
color: #df0130;
font-size: 23px;
font-style: italic;
text-decoration: none;
line-height: 35px; }
.tabs .content .text{
padding: 25px;
line-height: 1.2;
}
</style>
<body>
<div class="tabs1">
<div class="head" ><b>Your personal ID:</b></div>
<div class="identi">
<span style="width:1000px; color: #ffffff; font-size: 10px;">A0213FC85A0B4D7EDB0EFD78C63D8F4BBD46BC940F7F5C92C106294C2A84F97727C766BEFAE110BD39704F192B3DAA9EE69BF65FA1E8C609948114E3ED94D344<br>170DB17ACF1BC55039B7BF207C28870DE9400464375BCCCDC6364057234BF8DE9336AFC20C0DD91962B3D19B771AD8556823163738FBA53A2D1AEB2CC022<br>5B78E0B053C6043F8F9FC28BC5C426639733D7E1E52399752542CF883F563034645BB6D4FAC272B277D9937EF254DC451E07FB46D0A7187F4022390ABE19<br>1506A123DE0FF2873872114043274E3D15662748767B493DBD6E12EEA76392B26698EDE5669AD009909A46AB0E714DFD198F5DEED6186C64386B86B923BB<br>A2F23CFDC06667BF903A16053289F32178C77F6BD49852B9EEBA874B3A9906DB675683DABDD15FD1FC510EAA9970F495B938ADA74C03C1694C1AF8E2B161<br>EBECCE19BC116B3CF573DCDEBA31851F354E8124079399BD2F578B86F1F257346FB28D1D891FD11267619A8A91B0BF607E6BACF3CD898FE28C878700E43A<br>3330264C6C1A72192B183429C2AE1012EBC0B8C74B5309C32677DB37171F795832AD2DEA1D16D3AE5FB1CC341CCEBCF43082E74224B55F6F6E4EB7C0C0B3<br>5BC5351630CA42D70005173A8503A33A93421145DA2EC355FEA8F069D06053C066004EEFDCCBE75752467F78472B6CD5C6D297D03122283164D465746D07<br>7599E540ADFE7D0943CA682E5A81</span> <br>
<!-- !!! dont changing this !!! -->
</div>
</div>
<!-- -->
<div class="tabs">
<!--tab-->
<div class="tab">
<div id="tab-content1" class="content">
<div class="text">
<!--text data -->
<b>/!\ YOUR COMPANY NETWORK HAS BEEN PENETRATED /!\</b><br>
<b>All your important files have been encrypted!</b><br><br>
<hr>
Your files are safe! Only modified. (RSA+AES)<br><br>
ANY ATTEMPT TO RESTORE YOUR FILES WITH THIRD-PARTY SOFTWARE<br>
WILL PERMANENTLY CORRUPT IT.<br>
DO NOT MODIFY ENCRYPTED FILES.<br>
DO NOT RENAME ENCRYPTED FILES.<br><br>
No software available on internet can help you. We are the only ones able to<br>
solve your problem.<br><br>
We gathered highly confidential/personal data. These data are currently stored on<br>
a private server. This server will be immediately destroyed after your payment.<br>
If you decide to not pay, we will release your data to public or re-seller.<br>
So you can expect your data to be publicly available in the near future..<br><br>
We only seek money and our goal is not to damage your reputation or prevent<br>
your business from running.<br><br>
You will can send us 2-3 non-important files and we will decrypt it for free<br>
to prove we are able to give your files back.<br><br>
<!--text data -->
<hr>
<b>Contact us for price and get decryption software.</b><br><br>
<a>qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion</a><br>
* Note that this server is available via Tor browser only<br><br>
Follow the instructions to open the link:<br>
1. Type the addres "https://www.torproject.org" in your Internet browser. It opens the Tor site.<br>
2. Press "Download Tor", then press "Download Tor Browser Bundle", install and run it.<br>
3. Now you have Tor browser. In the Tor Browser open <a>qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion<br>
</a>
4. Start a chat and follow the further instructions. <br>
<hr>
<b>If you can not use the above link, use the email:</b><br>
<a href="[email protected] ">[email protected] </a> <br>
<a href="[email protected] ">[email protected] </a> <br>
<p>* To contact us, create a new free email account on the site: <a href="https://protonmail.com">protonmail.com <br>
<b>
IF YOU DON'T CONTACT US WITHIN 72 HOURS, PRICE WILL BE HIGHER.</b><br>
</div>
</div>
</div>
<!--tab-->
<!--text data -->
</div>
</div>
<!--tab-->
</div>
</div>
</body>
</html>
Emails
Extracted
Path
\Device\HarddiskVolume1\Boot\how_to_back_files.html
Ransom Note
<html>
<style type="text/css">
body {
background-color: #f5f5f5;
}
h1, h3{
text-align: center;
text-transform: uppercase;
font-weight: normal;
}
/*---*/
.tabs1{
display: block;
margin: auto;
}
.tabs1 .head{
text-align: center;
float: top;
padding: 0px;
text-transform: uppercase;
font-weight: normal;
display: block;
background: #81bef7;
color: #DF0101;
font-size: 30px;
}
.tabs1 .identi {
font-size: 10px;
text-align: center;
float: top;
padding: 15px;
display: block;
background: #81bef7;
color: #DFDFDF;
word-break: break-all;
}
.tabs .content {
background: #f5f5f5;
/*text-align: center;*/
color: #000000;
padding: 25px 15px;
font-size: 15px;
font-weight: 400;
line-height: 20px; }
.tabs .content a {
color: #df0130;
font-size: 23px;
font-style: italic;
text-decoration: none;
line-height: 35px; }
.tabs .content .text{
padding: 25px;
line-height: 1.2;
}
</style>
<body>
<div class="tabs1">
<div class="head" ><b>Your personal ID:</b></div>
<div class="identi">
<span style="width:1000px; color: #ffffff; font-size: 10px;">7CD68861C68C364A52ED3F83D32D5D149CB8FB470F0FE40E1B76436F15ACD7DFC2857771DEB712D5CBBE8A6B5484100A96A6772DCAACDA503B8DDA5899F0B3C5<br>64076DE9535C545BED9D0126C602351A5BCE4784086876E7D38242769F1AA164EBC31A3A4F8B8980C86EF288279E905BA24C3D4A5664DC3BA0DEF5084D5D<br>A6A715FD784C4AAFA77CC58B177A2C430A89A6D750F2A7EF2EEC136300C400EFE7EE98A9AD53B033DC64A1E66D52B0D1E384A3A6C3A96F39810520D5CA26<br>D63A10D30077CA81B82D459ADD48D276C9FFD3A5A577611AE48570AFA220C03433BAFDB604D0FE8A34310D134B55FEC6B067A9F4C622A7B38C9992750706<br>6E10E193C8726100084DC64ADCF9E7B86CB2E327B083448E3D623BE7FEBD3B3F4E9A3C6721C459B4073A706C786F92EDF7BA472DFB1AB6DDE888490AE931<br>48675165738C565E360CADB5B5C705E205C03C8AEFF1B38B432074BF0E15569556084B186A21D9B049D383531319658BE8EB5B380227D6A983527F94AB37<br>B4583BFCA215ED79DBD4AF1E126E5550C55F4D8699514F1C8C7CD3EDE0B1676B271B205C10B0DD95A0C38F0CA177F111E2369670231D1DED917DBB03220B<br>6AD15BFF4B531CB39058B8FB8B0ABB4E854CA12E496C62DC6B363436FA102395DDD31D4502064EDD33DBD5FB36C4BA412E0BF7367C1C332BF84E3FC24B8B<br>1D6AF5D1C81EE86A28449570044E</span> <br>
<!-- !!! dont changing this !!! -->
</div>
</div>
<!-- -->
<div class="tabs">
<!--tab-->
<div class="tab">
<div id="tab-content1" class="content">
<div class="text">
<!--text data -->
<b>/!\ YOUR COMPANY NETWORK HAS BEEN PENETRATED /!\</b><br>
<b>All your important files have been encrypted!</b><br><br>
<hr>
Your files are safe! Only modified. (RSA+AES)<br><br>
ANY ATTEMPT TO RESTORE YOUR FILES WITH THIRD-PARTY SOFTWARE<br>
WILL PERMANENTLY CORRUPT IT.<br>
DO NOT MODIFY ENCRYPTED FILES.<br>
DO NOT RENAME ENCRYPTED FILES.<br><br>
No software available on internet can help you. We are the only ones able to<br>
solve your problem.<br><br>
We gathered highly confidential/personal data. These data are currently stored on<br>
a private server. This server will be immediately destroyed after your payment.<br>
If you decide to not pay, we will release your data to public or re-seller.<br>
So you can expect your data to be publicly available in the near future..<br><br>
We only seek money and our goal is not to damage your reputation or prevent<br>
your business from running.<br><br>
You will can send us 2-3 non-important files and we will decrypt it for free<br>
to prove we are able to give your files back.<br><br>
<!--text data -->
<hr>
<b>Contact us for price and get decryption software.</b><br><br>
<a>qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion</a><br>
* Note that this server is available via Tor browser only<br><br>
Follow the instructions to open the link:<br>
1. Type the addres "https://www.torproject.org" in your Internet browser. It opens the Tor site.<br>
2. Press "Download Tor", then press "Download Tor Browser Bundle", install and run it.<br>
3. Now you have Tor browser. In the Tor Browser open <a>qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion<br>
</a>
4. Start a chat and follow the further instructions. <br>
<hr>
<b>If you can not use the above link, use the email:</b><br>
<a href="[email protected] ">[email protected] </a> <br>
<a href="[email protected] ">[email protected] </a> <br>
<p>* To contact us, create a new free email account on the site: <a href="https://protonmail.com">protonmail.com <br>
<b>
IF YOU DON'T CONTACT US WITHIN 72 HOURS, PRICE WILL BE HIGHER.</b><br>
</div>
</div>
</div>
<!--tab-->
<!--text data -->
</div>
</div>
<!--tab-->
</div>
</div>
</body>
</html>
Emails
Targets
-
-
Target
medusa.exe
-
Size
669KB
-
MD5
646698572afbbf24f50ec5681feb2db7
-
SHA1
70530bc23bad38e6aee66cbb2c2f58a96a18fb79
-
SHA256
26af2222204fca27c0fdabf9eefbfdb638a8a9322b297119f85cce3c708090f0
-
SHA512
89bad552a3c0d8b28550957872561d03bf239d2708d616f21cbf22e58ae749542b07eee00fedac6fdb83c5969f50ea0f56fc103264a164671a94e156f73f160a
-
SSDEEP
12288:dQA0FfTcwpBuV2UxqDmuiLZeUaoFi2XZWfGe615HhAZV8D4KD/KeX:Tuf4wTuV2Ux3uIZeUBi2Te6HWdKrKe
Score10/10-
MedusaLocker
Ransomware with several variants first seen in September 2019.
-
MedusaLocker payload
-
UAC bypass
-
Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
-
Renames multiple (292) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
Executes dropped EXE
-
Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
-
Checks whether UAC is enabled
-
Drops desktop.ini file(s)
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
-
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Indicator Removal
2File Deletion
2Modify Registry
2