lockfile | 60b47bcd773f75c3baa2aa39e98a1b691653396237cbe4aa12eb3129011d83cb

General

Target

svhost.bin.exe
Size

669KB
MD5

ed7d859df562c7679dfcb14ee359ff2a
SHA1

cde2bfc546f6fc85bcdf5d35bfbd2d17d5c7c91c
SHA256

c2a78b419e7d33de9e7418306f30623970a02d4d41c562e99581d0dc3e0bdb08
SHA512

730c6940dc83f071cb65ebc3dacde8ddde5147e722cdb027d3feb8fe42bf7b6b0f699ff8b744b7f0dc0ca0fd6762b42acee4b2d67220b637cee0c82ae893bf80

Score

10^/10

lockfile medusalocker evasion ransomware spyware stealer trojan

Malware Config

Extracted

Path

C:\Boot\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;">88AF813DB2666FB70367F1B1F10249ECB5C1BBFA2D39FECECFE00CA3FC56752D3A5D7B5021068DCA33F8B9020477567616290C5AFB8D678650964A54BEB6355A<br>A61B5F5353C1DAFAB366922EE7CD28EDCD46DD5EB94C7B6250AD07E7A4AC285788B1644D202F45F5B8E790C175BA9C0647435D94DC3734642EB45C3E0683<br>99574DD9AB3F7C568A0F61916FA22FCC0001436499A4AA89622D91B47FBDF926A59B8F3D3895B6CD411D61722C7CD3CDAE28D29F355A0923B8958C9F36C6<br>50790B462A6C23D4B36BCE5A3092ADE48756BE4A6E31E6D33E912C5D192B1D77B72A460ECE8AC5E861DDBBB8DE20B05937E3942D39BBE6615CCA02FDC4C9<br>DFE93DCAA53C4786C328DA3FE767076001151AD4AC034E64B408A868C64C5F3B58C4A506BDDD5FC86622121EEF7F2C1AE23905500277A3774CB2BA6C6BFC<br>259FEDE91FE01FA4DC4BDC75CCD79824397A0A688DB4788C54752CC8ED5DC31A4E375D2B2727E0A54BB1F4A8C49327568A73CF4F57D70DFDA6DD89591A0E<br>62476E9205C16DEA194B2B5ADE635B6D9516199ECB6EB89781214A4775D2C089851652C6CB7C8148909F6DB1D9FFE1F4BAAAC4B20134468B3DE87F63726B<br>EDBAA69E0C93601415683F7ADF6CC38B8EA10CF5E425159F48745DE5FFE86B0043F038219C968E7B364D6985172427A5466B657F2E76FC5CD2481A024841<br>23698F44307AA66D47ED91130F19</span> <br>  </div> </div>  <div class="tabs">  <div class="tab"> <div id="tab-content1" class="content"> <div class="text">  <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>  <hr> <b>Contact us for price and get decryption software.</b><br><br> <a>.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>.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>   </div> </div>  </div> </div> </body> </html>

Emails

href="[email protected]

">[email protected]

[email protected]">[email protected]</a>

Signatures

LockFile
LockFile is a new ransomware that emerged in July 2021 with ProxyShell vulnerabilties.
ransomware lockfile
MedusaLocker
Ransomware with several variants first seen in September 2019.
ransomware medusalocker
UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies extensions of user files 9 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

svhost.bin.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\SwitchGroup.tiff	svhost.bin.exe
File renamed	C:\Users\Admin\Pictures\UnblockConvertFrom.crw => C:\Users\Admin\Pictures\UnblockConvertFrom.crw.lockfile	svhost.bin.exe
File renamed	C:\Users\Admin\Pictures\UnregisterDisable.tiff => C:\Users\Admin\Pictures\UnregisterDisable.tiff.lockfile	svhost.bin.exe
File renamed	C:\Users\Admin\Pictures\WatchWait.tif => C:\Users\Admin\Pictures\WatchWait.tif.lockfile	svhost.bin.exe
File renamed	C:\Users\Admin\Pictures\CompareSwitch.raw => C:\Users\Admin\Pictures\CompareSwitch.raw.lockfile	svhost.bin.exe
File renamed	C:\Users\Admin\Pictures\ExitImport.crw => C:\Users\Admin\Pictures\ExitImport.crw.lockfile	svhost.bin.exe
File renamed	C:\Users\Admin\Pictures\GetSkip.crw => C:\Users\Admin\Pictures\GetSkip.crw.lockfile	svhost.bin.exe
File renamed	C:\Users\Admin\Pictures\SwitchGroup.tiff => C:\Users\Admin\Pictures\SwitchGroup.tiff.lockfile	svhost.bin.exe
File opened for modification	C:\Users\Admin\Pictures\UnregisterDisable.tiff	svhost.bin.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

svhost.bin.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svhost.bin.exe
Drops desktop.ini file(s) 1 IoCs

Processes:

svhost.bin.exe

description ioc process

File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-1042495040-510797905-2613508344-1000\desktop.ini svhost.bin.exe

description	ioc	process
File opened for modification	\??\Z:\$RECYCLE.BIN\S-1-5-21-1042495040-510797905-2613508344-1000\desktop.ini	svhost.bin.exe

Enumerates connected drives 3 TTPs 24 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

svhost.bin.exe

description	ioc	process
File opened (read-only)	\??\E:	svhost.bin.exe
File opened (read-only)	\??\F:	svhost.bin.exe
File opened (read-only)	\??\K:	svhost.bin.exe
File opened (read-only)	\??\O:	svhost.bin.exe
File opened (read-only)	\??\P:	svhost.bin.exe
File opened (read-only)	\??\R:	svhost.bin.exe
File opened (read-only)	\??\W:	svhost.bin.exe
File opened (read-only)	\??\B:	svhost.bin.exe
File opened (read-only)	\??\L:	svhost.bin.exe
File opened (read-only)	\??\Q:	svhost.bin.exe
File opened (read-only)	\??\I:	svhost.bin.exe
File opened (read-only)	\??\H:	svhost.bin.exe
File opened (read-only)	\??\J:	svhost.bin.exe
File opened (read-only)	\??\M:	svhost.bin.exe
File opened (read-only)	\??\N:	svhost.bin.exe
File opened (read-only)	\??\S:	svhost.bin.exe
File opened (read-only)	\??\T:	svhost.bin.exe
File opened (read-only)	\??\Z:	svhost.bin.exe
File opened (read-only)	\??\A:	svhost.bin.exe
File opened (read-only)	\??\U:	svhost.bin.exe
File opened (read-only)	\??\V:	svhost.bin.exe
File opened (read-only)	\??\X:	svhost.bin.exe
File opened (read-only)	\??\Y:	svhost.bin.exe
File opened (read-only)	\??\G:	svhost.bin.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Interacts with shadow copies 2 TTPs 3 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exevssadmin.exevssadmin.exe

pid process

592 vssadmin.exe
4084 vssadmin.exe
2804 vssadmin.exe

pid	process
592	vssadmin.exe
4084	vssadmin.exe
2804	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

svhost.bin.exe

pid	process
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe
3836	svhost.bin.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

vssvc.exewmic.exewmic.exewmic.exe

description	pid	process
Token: SeBackupPrivilege	520	vssvc.exe
Token: SeRestorePrivilege	520	vssvc.exe
Token: SeAuditPrivilege	520	vssvc.exe
Token: SeIncreaseQuotaPrivilege	3168	wmic.exe
Token: SeSecurityPrivilege	3168	wmic.exe
Token: SeTakeOwnershipPrivilege	3168	wmic.exe
Token: SeLoadDriverPrivilege	3168	wmic.exe
Token: SeSystemProfilePrivilege	3168	wmic.exe
Token: SeSystemtimePrivilege	3168	wmic.exe
Token: SeProfSingleProcessPrivilege	3168	wmic.exe
Token: SeIncBasePriorityPrivilege	3168	wmic.exe
Token: SeCreatePagefilePrivilege	3168	wmic.exe
Token: SeBackupPrivilege	3168	wmic.exe
Token: SeRestorePrivilege	3168	wmic.exe
Token: SeShutdownPrivilege	3168	wmic.exe
Token: SeDebugPrivilege	3168	wmic.exe
Token: SeSystemEnvironmentPrivilege	3168	wmic.exe
Token: SeRemoteShutdownPrivilege	3168	wmic.exe
Token: SeUndockPrivilege	3168	wmic.exe
Token: SeManageVolumePrivilege	3168	wmic.exe
Token: 33	3168	wmic.exe
Token: 34	3168	wmic.exe
Token: 35	3168	wmic.exe
Token: 36	3168	wmic.exe
Token: SeIncreaseQuotaPrivilege	4172	wmic.exe
Token: SeSecurityPrivilege	4172	wmic.exe
Token: SeTakeOwnershipPrivilege	4172	wmic.exe
Token: SeLoadDriverPrivilege	4172	wmic.exe
Token: SeSystemProfilePrivilege	4172	wmic.exe
Token: SeSystemtimePrivilege	4172	wmic.exe
Token: SeProfSingleProcessPrivilege	4172	wmic.exe
Token: SeIncBasePriorityPrivilege	4172	wmic.exe
Token: SeCreatePagefilePrivilege	4172	wmic.exe
Token: SeBackupPrivilege	4172	wmic.exe
Token: SeRestorePrivilege	4172	wmic.exe
Token: SeShutdownPrivilege	4172	wmic.exe
Token: SeDebugPrivilege	4172	wmic.exe
Token: SeSystemEnvironmentPrivilege	4172	wmic.exe
Token: SeRemoteShutdownPrivilege	4172	wmic.exe
Token: SeUndockPrivilege	4172	wmic.exe
Token: SeManageVolumePrivilege	4172	wmic.exe
Token: 33	4172	wmic.exe
Token: 34	4172	wmic.exe
Token: 35	4172	wmic.exe
Token: 36	4172	wmic.exe
Token: SeIncreaseQuotaPrivilege	1008	wmic.exe
Token: SeSecurityPrivilege	1008	wmic.exe
Token: SeTakeOwnershipPrivilege	1008	wmic.exe
Token: SeLoadDriverPrivilege	1008	wmic.exe
Token: SeSystemProfilePrivilege	1008	wmic.exe
Token: SeSystemtimePrivilege	1008	wmic.exe
Token: SeProfSingleProcessPrivilege	1008	wmic.exe
Token: SeIncBasePriorityPrivilege	1008	wmic.exe
Token: SeCreatePagefilePrivilege	1008	wmic.exe
Token: SeBackupPrivilege	1008	wmic.exe
Token: SeRestorePrivilege	1008	wmic.exe
Token: SeShutdownPrivilege	1008	wmic.exe
Token: SeDebugPrivilege	1008	wmic.exe
Token: SeSystemEnvironmentPrivilege	1008	wmic.exe
Token: SeRemoteShutdownPrivilege	1008	wmic.exe
Token: SeUndockPrivilege	1008	wmic.exe
Token: SeManageVolumePrivilege	1008	wmic.exe
Token: 33	1008	wmic.exe
Token: 34	1008	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

svhost.bin.exe

description	pid	process	target process
PID 3836 wrote to memory of 4084	3836	svhost.bin.exe	vssadmin.exe
PID 3836 wrote to memory of 4084	3836	svhost.bin.exe	vssadmin.exe
PID 3836 wrote to memory of 4084	3836	svhost.bin.exe	vssadmin.exe
PID 3836 wrote to memory of 3168	3836	svhost.bin.exe	wmic.exe
PID 3836 wrote to memory of 3168	3836	svhost.bin.exe	wmic.exe
PID 3836 wrote to memory of 3168	3836	svhost.bin.exe	wmic.exe
PID 3836 wrote to memory of 2804	3836	svhost.bin.exe	vssadmin.exe
PID 3836 wrote to memory of 2804	3836	svhost.bin.exe	vssadmin.exe
PID 3836 wrote to memory of 2804	3836	svhost.bin.exe	vssadmin.exe
PID 3836 wrote to memory of 4172	3836	svhost.bin.exe	wmic.exe
PID 3836 wrote to memory of 4172	3836	svhost.bin.exe	wmic.exe
PID 3836 wrote to memory of 4172	3836	svhost.bin.exe	wmic.exe
PID 3836 wrote to memory of 592	3836	svhost.bin.exe	vssadmin.exe
PID 3836 wrote to memory of 592	3836	svhost.bin.exe	vssadmin.exe
PID 3836 wrote to memory of 592	3836	svhost.bin.exe	vssadmin.exe
PID 3836 wrote to memory of 1008	3836	svhost.bin.exe	wmic.exe
PID 3836 wrote to memory of 1008	3836	svhost.bin.exe	wmic.exe
PID 3836 wrote to memory of 1008	3836	svhost.bin.exe	wmic.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

Processes:

svhost.bin.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svhost.bin.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	svhost.bin.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1"	svhost.bin.exe

C:\Users\Admin\AppData\Local\Temp\svhost.bin.exe
"C:\Users\Admin\AppData\Local\Temp\svhost.bin.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:3836
- C:\Windows\SysWOW64\vssadmin.exe
  vssadmin.exe Delete Shadows /All /Quiet
  2⤵
  - Interacts with shadow copies
  PID:4084
- C:\Windows\SysWOW64\Wbem\wmic.exe
  wmic.exe SHADOWCOPY /nointeractive
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3168
- C:\Windows\SysWOW64\vssadmin.exe
  vssadmin.exe Delete Shadows /All /Quiet
  2⤵
  - Interacts with shadow copies
  PID:2804
- C:\Windows\SysWOW64\Wbem\wmic.exe
  wmic.exe SHADOWCOPY /nointeractive
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4172
- C:\Windows\SysWOW64\vssadmin.exe
  vssadmin.exe Delete Shadows /All /Quiet
  2⤵
  - Interacts with shadow copies
  PID:592
- C:\Windows\SysWOW64\Wbem\wmic.exe
  wmic.exe SHADOWCOPY /nointeractive
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1008