Analysis

  • max time kernel
    85s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-10-2023 14:55

General

  • Target

    1bc0575b3fc6486cb2510dac1ac6ae4889b94a955d3eade53d3ba3a92d133281.exe

  • Size

    235KB

  • MD5

    f6f120d1262b88f79debb5d848ac7db9

  • SHA1

    1339282f9b2d2a41326daf3cf284ec2ae8f0f93c

  • SHA256

    1bc0575b3fc6486cb2510dac1ac6ae4889b94a955d3eade53d3ba3a92d133281

  • SHA512

    1067c1a73cf891d651fa007f4ccc4452f32801fe3859933ef1bcc00985e35ce016fa6c601c0e3c10df2080fc9b8a776b2f18d40bd64dfb98177ab638c4b545bd

  • SSDEEP

    6144:c5vMUmRTTgwnfeP+Jx1cLNAIyBcc9WrEWUC4wQh/6BeX:/U8Tgufnx1cLNncgQWUUQh/+e

Malware Config

Extracted

Path

C:\odt\HOW_TO_RECOVER_DATA.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; } .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;">9E2BDAF3BBB8A62BA3B4AB52D5CE1FE477101B2DD4F8C57D9A0E888891FDDF3614EE8EBBFC461E0B36680994E4AAABE3DAD5095F30BFC50F0C558C33C6F5CF9A<br>D99593EEC5B3E60969FF446538C3C820862A545916F2C0EC8F844E94751186DDC0AE61CD1CD3669F7FE54EC69E2A5087F951F264A4604481F301A8FE557B<br>AF0C29F8E47C80AD3F4325A69B1E7394483D4A52AF47DFD77AA7D69F5E6F653F8A0F13F0C15565426F439A06C547DA38158A3CA67DE909043EDA99515A4B<br>FF49CF8F0C4629C7D0CA6A937AFF0F1890660732B73F66A54A22B5DFA39F2057A15CC4D1E46A40F7031EFD8A3CD57527FE3366932ADFC81B1B948519D1F1<br>B8EC0C10836557C805722FBE7D093C3566CA664ADA2F5DBFDBD13424E6B1536FD7C09E6C6AF329480C1D4AB319DB2206A4370D7B4C3E75BE0ECD15557FFF<br>48443303BB7F8EDF6482A16F6CC57555D284FA880140B1ACA52CAAC4107995FD631C52C9B5FF714564624EC258BA2E52150733982882B710C6F33CEF33C6<br>EA9AFA8EC70E1F29E0510A24408447D347F11F677A9D2A4D32FA259E429D8DA63B130C6A86975B5E5D6511D6A2290759E97FA88AD70D890E48CB06A13D1C<br>956296DDE6959ECA8A3C8ACD0B6B5AFFB2ED787D06586709E41BAAD4BF750C2A65541B7644FDD98DBA27D96FFACBEC037E8B4F890744E82D5E9931C1FF41<br>DDD53576AB8CB8B4AA84C6DD3D2A</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>

Signatures

  • MedusaLocker

    Ransomware with several variants first seen in September 2019.

  • MedusaLocker payload 11 IoCs
  • UAC bypass 3 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 15 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 63 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1bc0575b3fc6486cb2510dac1ac6ae4889b94a955d3eade53d3ba3a92d133281.exe
    "C:\Users\Admin\AppData\Local\Temp\1bc0575b3fc6486cb2510dac1ac6ae4889b94a955d3eade53d3ba3a92d133281.exe"
    1⤵
    • UAC bypass
    • Checks whether UAC is enabled
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4484
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2968
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3952
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3472
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    PID:744

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\svhost.exe

    Filesize

    235KB

    MD5

    f6f120d1262b88f79debb5d848ac7db9

    SHA1

    1339282f9b2d2a41326daf3cf284ec2ae8f0f93c

    SHA256

    1bc0575b3fc6486cb2510dac1ac6ae4889b94a955d3eade53d3ba3a92d133281

    SHA512

    1067c1a73cf891d651fa007f4ccc4452f32801fe3859933ef1bcc00985e35ce016fa6c601c0e3c10df2080fc9b8a776b2f18d40bd64dfb98177ab638c4b545bd

  • C:\Users\Admin\AppData\Roaming\svhost.exe

    Filesize

    235KB

    MD5

    f6f120d1262b88f79debb5d848ac7db9

    SHA1

    1339282f9b2d2a41326daf3cf284ec2ae8f0f93c

    SHA256

    1bc0575b3fc6486cb2510dac1ac6ae4889b94a955d3eade53d3ba3a92d133281

    SHA512

    1067c1a73cf891d651fa007f4ccc4452f32801fe3859933ef1bcc00985e35ce016fa6c601c0e3c10df2080fc9b8a776b2f18d40bd64dfb98177ab638c4b545bd

  • C:\Users\Default\ntuser.dat.LOG2

    Filesize

    536B

    MD5

    7d3aa9dca28666addc0cf3b8eafcf852

    SHA1

    0ae4bd6d1c7d3973036830a62beaf1cb6f3605eb

    SHA256

    8019c54e398c76333a9313666e3f896072ffb0ad890c3e923dc950611213a237

    SHA512

    a82259acfae2b889b94b562076e3655591a8561c2742bbb23e9da53fe3685b708e26aa0af33407f3002a8ba3e3218e52e61211e4850af1e15281654957cab463

  • C:\odt\HOW_TO_RECOVER_DATA.html

    Filesize

    4KB

    MD5

    906bce439fa0d52e4a20c4dc07092239

    SHA1

    a6262fe86376d245047aa01788fbbafafb4e37ea

    SHA256

    945d98ea7f15a7571108abe60cc93c9ad1c5b104932869adc3ee981223e1c140

    SHA512

    52c767206b83346ab82dcf7cb740b1f4f658aa3f4b8f9501e8faa38c2dc255d3a2a2a10d148e9dcffe1a33e2d7a227a4b1e734e1fea60515e85d522ac8206147

  • memory/744-55-0x0000000000ED0000-0x0000000000F82000-memory.dmp

    Filesize

    712KB

  • memory/744-40-0x0000000000ED0000-0x0000000000F82000-memory.dmp

    Filesize

    712KB

  • memory/4484-22-0x0000000000120000-0x00000000001D2000-memory.dmp

    Filesize

    712KB

  • memory/4484-37-0x0000000000120000-0x00000000001D2000-memory.dmp

    Filesize

    712KB

  • memory/4484-36-0x0000000000120000-0x00000000001D2000-memory.dmp

    Filesize

    712KB

  • memory/4484-34-0x0000000000120000-0x00000000001D2000-memory.dmp

    Filesize

    712KB

  • memory/4484-0-0x0000000000120000-0x00000000001D2000-memory.dmp

    Filesize

    712KB

  • memory/4484-18-0x0000000000120000-0x00000000001D2000-memory.dmp

    Filesize

    712KB

  • memory/4484-56-0x0000000000120000-0x00000000001D2000-memory.dmp

    Filesize

    712KB

  • memory/4484-90-0x0000000000120000-0x00000000001D2000-memory.dmp

    Filesize

    712KB

  • memory/4484-492-0x0000000000120000-0x00000000001D2000-memory.dmp

    Filesize

    712KB

  • memory/4484-17-0x0000000000120000-0x00000000001D2000-memory.dmp

    Filesize

    712KB

  • memory/4484-676-0x0000000000120000-0x00000000001D2000-memory.dmp

    Filesize

    712KB