Analysis

  • max time kernel
    146s
  • max time network
    108s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-10-2024 04:35

General

  • Target

    45de70c85ece8763c685808eea085df4_JaffaCakes118.exe

  • Size

    669KB

  • MD5

    45de70c85ece8763c685808eea085df4

  • SHA1

    c9dd5313a661fd17b154ccb17a36e8399fc933a5

  • SHA256

    d595339cbbf415eca195eb3a0d9a8b6c9ff82a0cf36e4e867f5cef24503bb532

  • SHA512

    03a1d922711db1afc0a512151371c9a97a7478578c11591109537b1427aeac8b3ac44aa52c83439afe56e20134fd888bcaee1632f6046ce8edf0d99622fb362d

  • SSDEEP

    12288:dQA0FfTcwpBuV2UxqDmuiLZeUaoFi2XZWfGe615HhAZV8DNKD/KeX:Tuf4wTuV2Ux3uIZeUBi2Te6HWgKrKe

Malware Config

Extracted

Path

\Device\HarddiskVolume1\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;">686D22356F82676A5164DEEEC9B8415BFE4E991D6743018DB82B9C4CD29B010A35340ECE6201EE8C42947C21EE0B1D31DA871DE0F633578E4744EE09D348B1AF<br>0D248AC55CDE83AFA61A29F17711449EF591DE8DEACBC9B83D687699BED89500DD0E349FE16F2A639987A9343833C27451B2E3D89A6341B38155654836D3<br>52170A9CC6BF04A015BEC2C856B299ECD20151B3776BBF4A67532F5EB715C4EEEFA9707C5889CF08C1E75824BD1BD639BE7B0911DF521A69801506353832<br>1A4EDA416B3BE722132147DEF2EBB19251BABD8B95EFDAE2CB4B85E9A73938FBF7DB5C198FF1D099BADD14C7DC6347914BD81CC2DF5F43B16605E33BB5A8<br>D4B8A6F176587DE581E93B684BF50B7BACD09B5E24563293F5AE692645E1CCAC00E8EB1093B9EE7F5BC5B97AA86941BCC8B916165565DA4B93951878B87A<br>5D4194AEB343461225BD4026588E7A2029D03FF7EB536D92E9036611086D1C57932AA247AFA88E8EE99CB60E0FDAD93B6B79F504BFD5CF258E87413A5127<br>3782321E3BAA87DD271931A7BEA504CFA0FD0621A1E7C2DEC9DF676F32669994AF6188B33F152AC8443E191D535DF9D1F2CC9BBBB09BD296176997502EB1<br>78EA835B25071F467C338511CB32CF1704A532D72DED48051FBB1F39A811AAB1ACE0F689375BF9AF82AEA0DCA307402094A36FE245D5F9F52E7CD4088398<br>D4CD9B706F005D367D6CFE351B37</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</a><br> 4. Start a chat and follow the further instructions. <br><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> <b>* To contact us, create a new free email account on the site:</b> <a href="https://protonmail.com">protonmail.com<br> <hr> <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 1 IoCs
  • UAC bypass 3 TTPs 2 IoCs
  • Renames multiple (203) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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\45de70c85ece8763c685808eea085df4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\45de70c85ece8763c685808eea085df4_JaffaCakes118.exe"
    1⤵
    • UAC bypass
    • Checks whether UAC is enabled
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4464
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4336
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:1740
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:2816
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    669KB

    MD5

    45de70c85ece8763c685808eea085df4

    SHA1

    c9dd5313a661fd17b154ccb17a36e8399fc933a5

    SHA256

    d595339cbbf415eca195eb3a0d9a8b6c9ff82a0cf36e4e867f5cef24503bb532

    SHA512

    03a1d922711db1afc0a512151371c9a97a7478578c11591109537b1427aeac8b3ac44aa52c83439afe56e20134fd888bcaee1632f6046ce8edf0d99622fb362d

  • C:\Users\Default\ntuser.dat.LOG2

    Filesize

    536B

    MD5

    771d8aad6baea34656f1fab807816140

    SHA1

    aa5ebff36bf2338004c023afe80e2e440ac0df2a

    SHA256

    ea02d18f18e6dbec284e1d9dcc104250caaa09f4d06487e21ab357b8914ab9d3

    SHA512

    d1f65fa30917173767118933aaaddf5d9b96a3ea1308e73e4118866bed53dd28484abd83204df0361fd19fe0b6401207fec0a749b9ade38b9a0638fb716a5a61

  • \Device\HarddiskVolume1\HOW_TO_RECOVER_DATA.html

    Filesize

    5KB

    MD5

    13a82d32600f0f899ead21ba8c9f0e2c

    SHA1

    86a728571afa310906abe46ceb3f3771ac28ed35

    SHA256

    ca721304829f45a9c5955948e7b29916971a27f74d07614b204bfc0727d95120

    SHA512

    2241d932e83b2de1b744e712e302aa483237f7501c45ad4696044c7d74b52575579d844cf36e7563ceda8a34b87d94f1ddb97465cae20fa419491d11ff27e028