Analysis

  • max time kernel
    129s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-11-2022 06:04

General

  • Target

    b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe

  • Size

    719KB

  • MD5

    8474039d83805eb7b447325c3a8d1ebb

  • SHA1

    a07d537f4253745a087709a9a07c449f84deed8d

  • SHA256

    b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649

  • SHA512

    3272091bbf123ba5e1592e8b2bd7740cddcb174fa158bc6980b25ee61d92387e94a25284736253f83a6eea78b427f6717e888e843db9d7759cfe9a7676576438

  • SSDEEP

    12288:q4UOTYQivI2qZ7aSgLwkFVpzUvest4ZEbjJLuhJVoM7SPd:bRTYVQ2qZ7aSgLwuVfstRJL6YM6

Malware Config

Extracted

Path

C:\Recovery_Instructions.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;">1D6BF68F9C76F36120299E1CDACF7E11E0879783DA23A5396D09E230E36C6BEF5553B56F636DFFD83BC1019F824DD26E8889065621E8798CDF51D5E057FA4997<br>BC80444018B450201D55A9E8868406C8B5F056763C169423166C05A21492E14C732CF66061A73DC2C78C559D3C9136254697C875B9EDEC84C14BAAF11330<br>5F3D2856E8D290E15FF1E931E2E02B8CA0CBA0A71320AD8FF797F4E23AB43A98234D3549E73678B4186EE631690D08070EFA831853F127ED6AA974D77B43<br>F5781A918E29CB1E7D2C4866C5DBB4E141BFF9554195B865D7D8D2CA484A80732E029F1B742DD3615879306243AF276474BCA3191B3B9EE8CD8155C396C0<br>8452BBA5DA65EE2CD428367859DB7B72801D0B7BD44DE65351234D36D8BF10B7202ABBDD5E00D7C89B4AEBBADA5E1A097DC008612A5B60F09748BA172B3C<br>EE0A486D80C755B8D7B154726D4A1EB1C098CD0FE0B2747CFE6EF6D94F1833CFDA5627CC67B5264C3EC8C2C7C5473D0E027C961325F7C4ADE0860736104E<br>346DA2C1E569B8E9BD52B1928D7F61F17BC97C264C88DEFEDA9CCC77A17F7FB963BA9201B3C9FFE015E05FE0A966486EB13678C9380566FF85FC2B53188E<br>B016344CDB9DDBA4A0EBBE90F0A710095A242AEE2E6A31B3A55124E80A893F222FC6F7462134059F5973B6EA3BDA79A00E4F2F457A33366D83B5CC96B180<br>3A9305D2A9D4E2F473E89CB8AE26</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>http://gvlay6u4g53rxdi5.onion/31-LPy3hdSfGLBgLSfGcKN9rubDKoa1VMK4-U3SI3ccuUyEhdgQ3GNVcdbdhKNKmLcUS</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 "{{URL}}". <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 mail on the site:</b> <a href="https://protonmail.com">protonmail.com<br> <hr> <b>Make contact as soon as possible. Your private key (decryption key) <br> is only stored temporarily.<br><br> 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

  • Detect Neshta payload 5 IoCs
  • MedusaLocker

    Ransomware with several variants first seen in September 2019.

  • MedusaLocker payload 7 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • UAC bypass 3 TTPs 2 IoCs
  • Executes dropped EXE 4 IoCs
  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 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.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 63 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe
    "C:\Users\Admin\AppData\Local\Temp\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2948
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe"
      2⤵
      • UAC bypass
      • Executes dropped EXE
      • Modifies extensions of user files
      • Checks whether UAC is enabled
      • Drops desktop.ini file(s)
      • Enumerates connected drives
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:1328
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        wmic.exe SHADOWCOPY /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2312
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        wmic.exe SHADOWCOPY /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4036
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        wmic.exe SHADOWCOPY /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3784
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    • Checks computer location settings
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3220
    • C:\Windows\svchost.com
      "C:\Windows\svchost.com" "C:\Users\Admin\AppData\Local\Temp\3582-490\svhost.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:728
      • C:\Users\Admin\AppData\Local\Temp\3582-490\svhost.exe
        C:\Users\Admin\AppData\Local\Temp\3582-490\svhost.exe
        3⤵
        • Executes dropped EXE
        PID:3908

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files\WindowsApps\

    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

  • C:\Users\Admin\AppData\Local\Temp\3582-490\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe

    Filesize

    678KB

    MD5

    5aa0a571567f8437556e9b00ae5a3532

    SHA1

    45377cb152832c9112db7909219fa87a6e760aae

    SHA256

    73549f6017ad04e475e40e9d306b3e042d080843d8e7c029a5bb6b8ab7e34432

    SHA512

    d320fecef75b4514b9cf154d41c3cc03e2cd8f6bf15ff0d7c97398127c0728cf0b24e5a46435573d38b384b1515876070f28daa7d37e81de10d1db2b27ae51ec

  • C:\Users\Admin\AppData\Local\Temp\3582-490\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe

    Filesize

    678KB

    MD5

    5aa0a571567f8437556e9b00ae5a3532

    SHA1

    45377cb152832c9112db7909219fa87a6e760aae

    SHA256

    73549f6017ad04e475e40e9d306b3e042d080843d8e7c029a5bb6b8ab7e34432

    SHA512

    d320fecef75b4514b9cf154d41c3cc03e2cd8f6bf15ff0d7c97398127c0728cf0b24e5a46435573d38b384b1515876070f28daa7d37e81de10d1db2b27ae51ec

  • C:\Users\Admin\AppData\Local\Temp\3582-490\svhost.exe

    Filesize

    678KB

    MD5

    5aa0a571567f8437556e9b00ae5a3532

    SHA1

    45377cb152832c9112db7909219fa87a6e760aae

    SHA256

    73549f6017ad04e475e40e9d306b3e042d080843d8e7c029a5bb6b8ab7e34432

    SHA512

    d320fecef75b4514b9cf154d41c3cc03e2cd8f6bf15ff0d7c97398127c0728cf0b24e5a46435573d38b384b1515876070f28daa7d37e81de10d1db2b27ae51ec

  • C:\Users\Admin\AppData\Local\Temp\3582-490\svhost.exe

    Filesize

    678KB

    MD5

    5aa0a571567f8437556e9b00ae5a3532

    SHA1

    45377cb152832c9112db7909219fa87a6e760aae

    SHA256

    73549f6017ad04e475e40e9d306b3e042d080843d8e7c029a5bb6b8ab7e34432

    SHA512

    d320fecef75b4514b9cf154d41c3cc03e2cd8f6bf15ff0d7c97398127c0728cf0b24e5a46435573d38b384b1515876070f28daa7d37e81de10d1db2b27ae51ec

  • C:\Users\Admin\AppData\Local\Temp\tmp5023.tmp

    Filesize

    8B

    MD5

    1ed531b15f72d7244c9039862cb85551

    SHA1

    3f85de7bcbeb3d5f4a02c99abe7ff9f45fa62517

    SHA256

    7f73872b086458a67a5df0f294e15bd0a1c8a64332757f5da05c6c56fec1b59c

    SHA512

    8814baaa30f7aa16805b8fd0c1f8a61a2926fdedf5d938cc0b2daa10807edfbd77720e719a9cde94cb3fe577f2b67b42a6851d89592254b6af180508c3d34f34

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

    Filesize

    719KB

    MD5

    8474039d83805eb7b447325c3a8d1ebb

    SHA1

    a07d537f4253745a087709a9a07c449f84deed8d

    SHA256

    b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649

    SHA512

    3272091bbf123ba5e1592e8b2bd7740cddcb174fa158bc6980b25ee61d92387e94a25284736253f83a6eea78b427f6717e888e843db9d7759cfe9a7676576438

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

    Filesize

    719KB

    MD5

    8474039d83805eb7b447325c3a8d1ebb

    SHA1

    a07d537f4253745a087709a9a07c449f84deed8d

    SHA256

    b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649

    SHA512

    3272091bbf123ba5e1592e8b2bd7740cddcb174fa158bc6980b25ee61d92387e94a25284736253f83a6eea78b427f6717e888e843db9d7759cfe9a7676576438

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

    Filesize

    719KB

    MD5

    8474039d83805eb7b447325c3a8d1ebb

    SHA1

    a07d537f4253745a087709a9a07c449f84deed8d

    SHA256

    b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649

    SHA512

    3272091bbf123ba5e1592e8b2bd7740cddcb174fa158bc6980b25ee61d92387e94a25284736253f83a6eea78b427f6717e888e843db9d7759cfe9a7676576438

  • C:\Windows\svchost.com

    Filesize

    40KB

    MD5

    36fd5e09c417c767a952b4609d73a54b

    SHA1

    299399c5a2403080a5bf67fb46faec210025b36d

    SHA256

    980bac6c9afe8efc9c6fe459a5f77213b0d8524eb00de82437288eb96138b9a2

    SHA512

    1813a6a5b47a9b2cd3958cf4556714ae240f2aa19d0a241b596830f0f2b89a33ec864d00ce6a791d323a58dfbff42a0fded65eefbf980c92685e25c0ec415d92

  • C:\Windows\svchost.com

    Filesize

    40KB

    MD5

    36fd5e09c417c767a952b4609d73a54b

    SHA1

    299399c5a2403080a5bf67fb46faec210025b36d

    SHA256

    980bac6c9afe8efc9c6fe459a5f77213b0d8524eb00de82437288eb96138b9a2

    SHA512

    1813a6a5b47a9b2cd3958cf4556714ae240f2aa19d0a241b596830f0f2b89a33ec864d00ce6a791d323a58dfbff42a0fded65eefbf980c92685e25c0ec415d92

  • memory/728-142-0x0000000000000000-mapping.dmp

  • memory/1328-132-0x0000000000000000-mapping.dmp

  • memory/2312-135-0x0000000000000000-mapping.dmp

  • memory/3784-137-0x0000000000000000-mapping.dmp

  • memory/3908-147-0x0000000000000000-mapping.dmp

  • memory/4036-136-0x0000000000000000-mapping.dmp