medusalocker | b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649

Analysis

max time kernel
127s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03-06-2024 11:43

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General

Target

Neshta.exe
Size

719KB
MD5

8474039d83805eb7b447325c3a8d1ebb
SHA1

a07d537f4253745a087709a9a07c449f84deed8d
SHA256

b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649
SHA512

3272091bbf123ba5e1592e8b2bd7740cddcb174fa158bc6980b25ee61d92387e94a25284736253f83a6eea78b427f6717e888e843db9d7759cfe9a7676576438
SSDEEP

12288:q4UOTYQivI2qZ7aSgLwkFVpzUvest4ZEbjJLuhJVoM7SPd:bRTYVQ2qZ7aSgLwuVfstRJL6YM6

Score

10^/10

medusalocker neshta defense_evasion evasion execution impact persistence ransomware spyware stealer trojan

Malware Config

Extracted

Path

\Device\HarddiskVolume1\Boot\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;">C8BAD299BCE2165657E6E13B01DE3F427B474710A11699455D6BC7E1EEACC8D3FE57451CB078B40356053F8D4E6EB2CFE63DC650A2177CB7809C333B158261E4<br>3B658C7CEA41EE8249DE3DE4629BD3CF76E5E2D2C1E2E3DD2051C256F09B4576FDB9BCD29B0BEBB43E05B561B241047EF9266CCF52B94E8077F9536F8115<br>35B2AD96EA1D62C49FBB4A266CA85B3989A9B7986D73FA1E8EA0ED6419777F43872CAC7BE5A6D623396E481913E22C025C6D7D5CB35271C6A107B4CEADB2<br>749B8901CAD4E5EF679B84371720D5B3D9F25FAF654D17B6AC2DE75AACFB071687E025244491258E46BE817841C637497B08B0E549716BCAEC529B0DDE06<br>413648A1F9177D772E227DCA15702CAE5D429A9294ED2C7D8A91AD19D52968E14741BABE017D26A2B68B8E6E96B66419F5C9A71782DA48FF24C3D2B1B965<br>23B6C9B0CBCCAD4EABDFA8DFAC928B3D4C66C67B6840CD13EBE70C9E4FD0BD35B4297A6125A7D06266E6243ABE521E38D3F458CC9D12D6A112EC26DE51FA<br>655A09B5BE18D38A2A831236A7165BFC68D16D477BE1D75C73B6237F799AA6B2B31A384ECFAE06CC5C33DBDA862EFBD8EBAF0A98BFF8920C31E1E048C0FA<br>1FB9488C5214FDBE18F9C489F9310340341CD576C73D5CA331ED1E27B379A0E4777627BB0DFCBD4623B614CB9C88DA690AF8ABF61DB3FB995E47BA92ED66<br>EB5A02214AD7A91021D11196595F</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>http://gvlay6u4g53rxdi5.onion/31-LPy3hdSfGLBgLSfGcKN9rubDKoa1VMK4-i8bdKLDB9QDgY5NMtlfaf0ISWR3YFK3m</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>   </div> </div>  </div> </div> </body> </html>

Emails

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

Signatures

Detect Neshta payload 4 IoCs

resource	yara_rule
behavioral1/files/0x000100000001030f-10.dat	family_neshta
behavioral1/files/0x000100000001030d-180.dat	family_neshta
behavioral1/memory/1952-835-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/1952-837-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta

MedusaLocker
Ransomware with several variants first seen in September 2019.
ransomware medusalocker

MedusaLocker payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0034000000015d4e-2.dat	family_medusalocker

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

UAC bypass 3 TTPs 2 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Neshta.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	Neshta.exe

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047
Renames multiple (242) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Executes dropped EXE 2 IoCs

pid	Process
3008	Neshta.exe
1480	svhost.exe

Loads dropped DLL 3 IoCs

pid	Process
1952	Neshta.exe
1952	Neshta.exe
1952	Neshta.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	Neshta.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
T1552.001

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Neshta.exe

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	\??\Z:\$RECYCLE.BIN\S-1-5-21-3452737119-3959686427-228443150-1000\desktop.ini	Neshta.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

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

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\EQUATION\EQNEDT32.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOBD5D~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\INFOPATH.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~2.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WORDICON.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GO664E~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\PPTICO.EXE	Neshta.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~3.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ACCICONS.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ImagingDevices.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\WinMail.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	Neshta.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\1033\ONELEV.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~4.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CNFNOT32.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\SELFCERT.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.exe	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\OIS.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE	Neshta.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.EXE	Neshta.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	Neshta.exe

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

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

T1070.004

Inhibit System Recovery

T1490

pid	Process
2536	vssadmin.exe
1380	vssadmin.exe
2516	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	Neshta.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe
3008	Neshta.exe

Suspicious use of AdjustPrivilegeToken 63 IoCs

description	pid	Process
Token: SeBackupPrivilege	2784	vssvc.exe
Token: SeRestorePrivilege	2784	vssvc.exe
Token: SeAuditPrivilege	2784	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2856	wmic.exe
Token: SeSecurityPrivilege	2856	wmic.exe
Token: SeTakeOwnershipPrivilege	2856	wmic.exe
Token: SeLoadDriverPrivilege	2856	wmic.exe
Token: SeSystemProfilePrivilege	2856	wmic.exe
Token: SeSystemtimePrivilege	2856	wmic.exe
Token: SeProfSingleProcessPrivilege	2856	wmic.exe
Token: SeIncBasePriorityPrivilege	2856	wmic.exe
Token: SeCreatePagefilePrivilege	2856	wmic.exe
Token: SeBackupPrivilege	2856	wmic.exe
Token: SeRestorePrivilege	2856	wmic.exe
Token: SeShutdownPrivilege	2856	wmic.exe
Token: SeDebugPrivilege	2856	wmic.exe
Token: SeSystemEnvironmentPrivilege	2856	wmic.exe
Token: SeRemoteShutdownPrivilege	2856	wmic.exe
Token: SeUndockPrivilege	2856	wmic.exe
Token: SeManageVolumePrivilege	2856	wmic.exe
Token: 33	2856	wmic.exe
Token: 34	2856	wmic.exe
Token: 35	2856	wmic.exe
Token: SeIncreaseQuotaPrivilege	2428	wmic.exe
Token: SeSecurityPrivilege	2428	wmic.exe
Token: SeTakeOwnershipPrivilege	2428	wmic.exe
Token: SeLoadDriverPrivilege	2428	wmic.exe
Token: SeSystemProfilePrivilege	2428	wmic.exe
Token: SeSystemtimePrivilege	2428	wmic.exe
Token: SeProfSingleProcessPrivilege	2428	wmic.exe
Token: SeIncBasePriorityPrivilege	2428	wmic.exe
Token: SeCreatePagefilePrivilege	2428	wmic.exe
Token: SeBackupPrivilege	2428	wmic.exe
Token: SeRestorePrivilege	2428	wmic.exe
Token: SeShutdownPrivilege	2428	wmic.exe
Token: SeDebugPrivilege	2428	wmic.exe
Token: SeSystemEnvironmentPrivilege	2428	wmic.exe
Token: SeRemoteShutdownPrivilege	2428	wmic.exe
Token: SeUndockPrivilege	2428	wmic.exe
Token: SeManageVolumePrivilege	2428	wmic.exe
Token: 33	2428	wmic.exe
Token: 34	2428	wmic.exe
Token: 35	2428	wmic.exe
Token: SeIncreaseQuotaPrivilege	2728	wmic.exe
Token: SeSecurityPrivilege	2728	wmic.exe
Token: SeTakeOwnershipPrivilege	2728	wmic.exe
Token: SeLoadDriverPrivilege	2728	wmic.exe
Token: SeSystemProfilePrivilege	2728	wmic.exe
Token: SeSystemtimePrivilege	2728	wmic.exe
Token: SeProfSingleProcessPrivilege	2728	wmic.exe
Token: SeIncBasePriorityPrivilege	2728	wmic.exe
Token: SeCreatePagefilePrivilege	2728	wmic.exe
Token: SeBackupPrivilege	2728	wmic.exe
Token: SeRestorePrivilege	2728	wmic.exe
Token: SeShutdownPrivilege	2728	wmic.exe
Token: SeDebugPrivilege	2728	wmic.exe
Token: SeSystemEnvironmentPrivilege	2728	wmic.exe
Token: SeRemoteShutdownPrivilege	2728	wmic.exe
Token: SeUndockPrivilege	2728	wmic.exe
Token: SeManageVolumePrivilege	2728	wmic.exe
Token: 33	2728	wmic.exe
Token: 34	2728	wmic.exe
Token: 35	2728	wmic.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1952 wrote to memory of 3008	1952	Neshta.exe	28
PID 1952 wrote to memory of 3008	1952	Neshta.exe	28
PID 1952 wrote to memory of 3008	1952	Neshta.exe	28
PID 1952 wrote to memory of 3008	1952	Neshta.exe	28
PID 3008 wrote to memory of 2516	3008	Neshta.exe	29
PID 3008 wrote to memory of 2516	3008	Neshta.exe	29
PID 3008 wrote to memory of 2516	3008	Neshta.exe	29
PID 3008 wrote to memory of 2516	3008	Neshta.exe	29
PID 3008 wrote to memory of 2856	3008	Neshta.exe	32
PID 3008 wrote to memory of 2856	3008	Neshta.exe	32
PID 3008 wrote to memory of 2856	3008	Neshta.exe	32
PID 3008 wrote to memory of 2856	3008	Neshta.exe	32
PID 3008 wrote to memory of 2536	3008	Neshta.exe	34
PID 3008 wrote to memory of 2536	3008	Neshta.exe	34
PID 3008 wrote to memory of 2536	3008	Neshta.exe	34
PID 3008 wrote to memory of 2536	3008	Neshta.exe	34
PID 3008 wrote to memory of 2428	3008	Neshta.exe	36
PID 3008 wrote to memory of 2428	3008	Neshta.exe	36
PID 3008 wrote to memory of 2428	3008	Neshta.exe	36
PID 3008 wrote to memory of 2428	3008	Neshta.exe	36
PID 3008 wrote to memory of 1380	3008	Neshta.exe	38
PID 3008 wrote to memory of 1380	3008	Neshta.exe	38
PID 3008 wrote to memory of 1380	3008	Neshta.exe	38
PID 3008 wrote to memory of 1380	3008	Neshta.exe	38
PID 3008 wrote to memory of 2728	3008	Neshta.exe	40
PID 3008 wrote to memory of 2728	3008	Neshta.exe	40
PID 3008 wrote to memory of 2728	3008	Neshta.exe	40
PID 3008 wrote to memory of 2728	3008	Neshta.exe	40
PID 1108 wrote to memory of 1480	1108	taskeng.exe	46
PID 1108 wrote to memory of 1480	1108	taskeng.exe	46
PID 1108 wrote to memory of 1480	1108	taskeng.exe	46
PID 1108 wrote to memory of 1480	1108	taskeng.exe	46

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

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

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\Neshta.exe
"C:\Users\Admin\AppData\Local\Temp\Neshta.exe"
1⤵
- Loads dropped DLL
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Users\Admin\AppData\Local\Temp\3582-490\Neshta.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\Neshta.exe"
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Drops desktop.ini file(s)
  - Enumerates connected drives
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:3008
- - C:\Windows\SysWOW64\vssadmin.exe
    vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:2516
- - C:\Windows\SysWOW64\Wbem\wmic.exe
    wmic.exe SHADOWCOPY /nointeractive
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2856
- - C:\Windows\SysWOW64\vssadmin.exe
    vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:2536
- - C:\Windows\SysWOW64\Wbem\wmic.exe
    wmic.exe SHADOWCOPY /nointeractive
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2428
- - C:\Windows\SysWOW64\vssadmin.exe
    vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1380
- - C:\Windows\SysWOW64\Wbem\wmic.exe
    wmic.exe SHADOWCOPY /nointeractive
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2728

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2784

C:\Windows\system32\taskeng.exe
taskeng.exe {156028A8-BF77-4CC3-A6A0-D43A58D63269} S-1-5-21-3452737119-3959686427-228443150-1000:QGTQZTRE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Users\Admin\AppData\Roaming\svhost.exe
  C:\Users\Admin\AppData\Roaming\svhost.exe
  2⤵
  - Executes dropped EXE
  PID:1480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

Filesize
547KB

MD5
cf6c595d3e5e9667667af096762fd9c4

SHA1
9bb44da8d7f6457099cb56e4f7d1026963dce7ce

SHA256
593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

SHA512
ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

Download Submit
C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\DW20.EXE

Filesize
859KB

MD5
02ee6a3424782531461fb2f10713d3c1

SHA1
b581a2c365d93ebb629e8363fd9f69afc673123f

SHA256
ead58c483cb20bcd57464f8a4929079539d634f469b213054bf737d227c026dc

SHA512
6c9272cb1b6bde3ee887e1463ab30ea76568cb1a285d11393337b78c4ad1c3b7e6ce47646a92ab6d70bff4b02ab9d699b84af9437b720e52dcd35579fe2693ec

Download Submit
C:\Users\Default\NTUSER.DAT.LOG2

Filesize
536B

MD5
7773cbfa821d6d21d886e3ff1192c3ae

SHA1
622bd08dff432d8ab2cfa322f31390bfe58f4be6

SHA256
4b2d1daaa2a076569471088fbe2f241a2deb1793869384ec772e71b009228476

SHA512
7e8a9071535d20c48a113562a1cc3b8f8c18cb4ac66560ed726757fa3b173af5deebd82c918f109fb3d732fef8fcd35734988b1eb6429a215b74eed5104402c1

Download Submit
\Device\HarddiskVolume1\Boot\Recovery_Instructions.html

Filesize
4KB

MD5
7b0ccd884dd4f8bc79aa2a09120236db

SHA1
56ca815624442fc2788a9423bd3ae19499697dd9

SHA256
55f4613857ffa0273701315781826d7eb5181acfac5223a5c574c4ebfbe5a184

SHA512
2bc389cc8b68a655c0ce7c0983b0e76595dc44caa51741634e57fc4798faaa734d12e3563b811ad3bc1c67ae13ab46204ec2c5000983ddad2e863e22273b8fbd

Download Submit
\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

Filesize
252KB

MD5
9e2b9928c89a9d0da1d3e8f4bd96afa7

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

Download Submit
\Users\Admin\AppData\Local\Temp\3582-490\Neshta.exe

Filesize
678KB

MD5
5aa0a571567f8437556e9b00ae5a3532

SHA1
45377cb152832c9112db7909219fa87a6e760aae

SHA256
73549f6017ad04e475e40e9d306b3e042d080843d8e7c029a5bb6b8ab7e34432

SHA512
d320fecef75b4514b9cf154d41c3cc03e2cd8f6bf15ff0d7c97398127c0728cf0b24e5a46435573d38b384b1515876070f28daa7d37e81de10d1db2b27ae51ec

Download Submit
memory/1952-835-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1952-837-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download