Analysis
- max time kernel
601s - max time network
273s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
04/02/2022, 03:00
Static task
static1
Behavioral task
behavioral1
Sample
svhost.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
svhost.exe
Resource
win10v2004-en-20220113
windows10-2004_x64
0 signatures
0 seconds
General
- Target svhost.exe
- Size 669KB
- Sample220204-dht67seec7
- SHA256 a3fe92224060ec183a25296999c18d4f86149649f1a701ac91b04d73e8678495
- MD5 7de20a779f98016a31f2d47a64deb30a
- SHA1 174375f8f540cb109cb8efea1cab30fc4155869d
- SHA512 bd3ff7efbf91e51d51ba8cb9529587500df721d9e631322f70a760b71f1fa0d8f2fecf4d0ab5ad2162ba75ae65aa5970edf8c647cbb8272bfc04a04189d31efb
- MD5 SHA1 SHA512
Malware Config
Extracted
Path
-
C:\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;">2D1C508BB9B3A6A7980E6DC7591D94DB819CC05A0EC782BE0B4F697790BAB16B077D0F0D346615249EA15D6E9B487812668BF66AADF6FDB10D9D4F9763AFECDB<br>127585BFAA470DA9D3195B94CAE2B241B76803502438650A6739D9020EF3EDE7FC553507417C3DCE1BA44AE792C6E20958876F230CD35BC23FD9FA409DFA<br>C82277FF38435D7BFC1B670E53503FEAB36851D8BF9F1718EB6D1D05D8CF7F196DACEA0FF76F7A3E653821ECE3726665373C716544A9A6053FADC4BEB727<br>40DDA3C136478C9C6DF468625ECF1D7EA20617D6D8CDE425B2E39FC6900D1B26CDD4A0D3A1B6A26C9F6BBABCF218A75DDFC9130E23191E2A58480C7507BF<br>FF3A29AA3D9A5100069A8EAD90F3157166447B06AC93FCBCF3092BAF976FD6D6B98E75C49EA57538BD680631D50F6B1868A63CD9F83FFBE044A154652F75<br>42E7F158D11061744B474816F5DB1DFC9C7FAE3356F0EBF3D93B342003A1E2762E094231C6C38D2A548EF486A01CA2E45EC10A5B4039EF0F74204E5CD9F9<br>9FEBF7496234D78F864718BFB69C6818EA46357B0A705EA96E77DA7ED2F0DE9885C375F0F05C2E297B19243AB144628E5A133CF230435421905E6B42C49C<br>436D80A43FE98E28ED5F51ED381D22BDC9B80C7200F65E25D2F66668234E4A0C300067A96876422C112C79EB9D51DDC365E11C0521A574F5289920E8C054<br>C1D366B3FD6F3C7F93C6639B591F</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
-
href="[email protected]
-
href="[email protected]
Signatures
- MedusaLocker
Ransomware with several variants first seen in September 2019.
- MedusaLocker Payload 2 IoCs
resource yara_rule behavioral2/files/0x000400000001e794-138.dat family_medusalocker behavioral2/files/0x000400000001e794-139.dat family_medusalocker - Executes dropped EXE 1 IoCs
pid Process 2028 svhost.exe - Modifies extensions of user files 4 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\NewEdit.raw => C:\Users\Admin\Pictures\NewEdit.raw.mlock5 svhost.exe File opened for modification C:\Users\Admin\Pictures\SetPop.tiff svhost.exe File renamed C:\Users\Admin\Pictures\SetPop.tiff => C:\Users\Admin\Pictures\SetPop.tiff.mlock5 svhost.exe File renamed C:\Users\Admin\Pictures\UninstallRestart.raw => C:\Users\Admin\Pictures\UninstallRestart.raw.mlock5 svhost.exe - Sets service image path in registry 2 TTPs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svhost.exe - Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-1346565761-3498240568-4147300184-1000\desktop.ini svhost.exe - Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\K: svhost.exe File opened (read-only) \??\L: svhost.exe File opened (read-only) \??\O: svhost.exe File opened (read-only) \??\Q: svhost.exe File opened (read-only) \??\R: svhost.exe File opened (read-only) \??\F: svhost.exe File opened (read-only) \??\H: svhost.exe File opened (read-only) \??\I: svhost.exe File opened (read-only) \??\U: svhost.exe File opened (read-only) \??\V: svhost.exe File opened (read-only) \??\Y: svhost.exe File opened (read-only) \??\S: svhost.exe File opened (read-only) \??\T: svhost.exe File opened (read-only) \??\X: svhost.exe File opened (read-only) \??\J: svhost.exe File opened (read-only) \??\N: svhost.exe File opened (read-only) \??\P: svhost.exe File opened (read-only) \??\M: svhost.exe File opened (read-only) \??\Z: svhost.exe File opened (read-only) \??\B: svhost.exe File opened (read-only) \??\E: svhost.exe File opened (read-only) \??\G: svhost.exe File opened (read-only) \??\A: svhost.exe File opened (read-only) \??\W: svhost.exe - Drops file in Windows directory 6 IoCs
description ioc Process File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.edb svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm svchost.exe File opened for modification C:\Windows\SoftwareDistribution\ReportingEvents.log svchost.exe File opened for modification C:\Windows\WindowsUpdate.log svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log svchost.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Modifies data under HKEY_USERS 41 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe 424 svhost.exe - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2020 wmic.exe Token: SeSecurityPrivilege 2020 wmic.exe Token: SeTakeOwnershipPrivilege 2020 wmic.exe Token: SeLoadDriverPrivilege 2020 wmic.exe Token: SeSystemProfilePrivilege 2020 wmic.exe Token: SeSystemtimePrivilege 2020 wmic.exe Token: SeProfSingleProcessPrivilege 2020 wmic.exe Token: SeIncBasePriorityPrivilege 2020 wmic.exe Token: SeCreatePagefilePrivilege 2020 wmic.exe Token: SeBackupPrivilege 2020 wmic.exe Token: SeRestorePrivilege 2020 wmic.exe Token: SeShutdownPrivilege 2020 wmic.exe Token: SeDebugPrivilege 2020 wmic.exe Token: SeSystemEnvironmentPrivilege 2020 wmic.exe Token: SeRemoteShutdownPrivilege 2020 wmic.exe Token: SeUndockPrivilege 2020 wmic.exe Token: SeManageVolumePrivilege 2020 wmic.exe Token: 33 2020 wmic.exe Token: 34 2020 wmic.exe Token: 35 2020 wmic.exe Token: 36 2020 wmic.exe Token: SeIncreaseQuotaPrivilege 2940 wmic.exe Token: SeSecurityPrivilege 2940 wmic.exe Token: SeTakeOwnershipPrivilege 2940 wmic.exe Token: SeLoadDriverPrivilege 2940 wmic.exe Token: SeSystemProfilePrivilege 2940 wmic.exe Token: SeSystemtimePrivilege 2940 wmic.exe Token: SeProfSingleProcessPrivilege 2940 wmic.exe Token: SeIncBasePriorityPrivilege 2940 wmic.exe Token: SeCreatePagefilePrivilege 2940 wmic.exe Token: SeBackupPrivilege 2940 wmic.exe Token: SeRestorePrivilege 2940 wmic.exe Token: SeShutdownPrivilege 2940 wmic.exe Token: SeDebugPrivilege 2940 wmic.exe Token: SeSystemEnvironmentPrivilege 2940 wmic.exe Token: SeRemoteShutdownPrivilege 2940 wmic.exe Token: SeUndockPrivilege 2940 wmic.exe Token: SeManageVolumePrivilege 2940 wmic.exe Token: 33 2940 wmic.exe Token: 34 2940 wmic.exe Token: 35 2940 wmic.exe Token: 36 2940 wmic.exe Token: SeIncreaseQuotaPrivilege 1660 wmic.exe Token: SeSecurityPrivilege 1660 wmic.exe Token: SeTakeOwnershipPrivilege 1660 wmic.exe Token: SeLoadDriverPrivilege 1660 wmic.exe Token: SeSystemProfilePrivilege 1660 wmic.exe Token: SeSystemtimePrivilege 1660 wmic.exe Token: SeProfSingleProcessPrivilege 1660 wmic.exe Token: SeIncBasePriorityPrivilege 1660 wmic.exe Token: SeCreatePagefilePrivilege 1660 wmic.exe Token: SeBackupPrivilege 1660 wmic.exe Token: SeRestorePrivilege 1660 wmic.exe Token: SeShutdownPrivilege 1660 wmic.exe Token: SeDebugPrivilege 1660 wmic.exe Token: SeSystemEnvironmentPrivilege 1660 wmic.exe Token: SeRemoteShutdownPrivilege 1660 wmic.exe Token: SeUndockPrivilege 1660 wmic.exe Token: SeManageVolumePrivilege 1660 wmic.exe Token: 33 1660 wmic.exe Token: 34 1660 wmic.exe Token: 35 1660 wmic.exe Token: 36 1660 wmic.exe Token: SeShutdownPrivilege 4016 svchost.exe - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 424 wrote to memory of 2020 424 svhost.exe 83 PID 424 wrote to memory of 2020 424 svhost.exe 83 PID 424 wrote to memory of 2020 424 svhost.exe 83 PID 424 wrote to memory of 2940 424 svhost.exe 86 PID 424 wrote to memory of 2940 424 svhost.exe 86 PID 424 wrote to memory of 2940 424 svhost.exe 86 PID 424 wrote to memory of 1660 424 svhost.exe 88 PID 424 wrote to memory of 1660 424 svhost.exe 88 PID 424 wrote to memory of 1660 424 svhost.exe 88 - System policy modification 1 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svhost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" svhost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" svhost.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\svhost.exe"C:\Users\Admin\AppData\Local\Temp\svhost.exe"1⤵
- 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:424 -
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2020
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-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2940
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1660
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe fc2053c63ca65363a56efcb86477dfc8 v4TlscNIC0O0khsjZD893A.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
PID:3736
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4016
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe1⤵
- Executes dropped EXE
PID:2028