Analysis Overview
SHA256
f16b28324fb8b97e433712fec6db4d422c32199c488e3d8a9dbc1acbbdc08307
Threat Level: Known bad
The file H-Output.exe was found to be: Known bad.
Malicious Activity Summary
Neshta
Detect Neshta payload
Neshta family
Executes dropped EXE
Reads user/profile data of web browsers
Modifies system executable filetype association
Drops file in Windows directory
Drops file in Program Files directory
Enumerates physical storage devices
Unsigned PE
Modifies registry class
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-19 17:48
Signatures
Detect Neshta payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Neshta family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-19 17:48
Reported
2024-06-19 17:51
Platform
win10-20240404-en
Max time kernel
134s
Max time network
138s
Command Line
Signatures
Detect Neshta payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Neshta
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3582-490\H-Output.exe | N/A |
| N/A | N/A | C:\Steam.exe | N/A |
| N/A | N/A | C:\Steam.exe | N/A |
| N/A | N/A | C:\Steam.exe | N/A |
Modifies system executable filetype association
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
Reads user/profile data of web browsers
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\PROGRA~2\WINDOW~2\wab.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~3.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaws.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Google\Update\1336~1.151\GO664E~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Google\Update\1336~1.151\GOBD5D~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\INTERN~1\ExtExport.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\WI54FB~1\wmpshare.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\WI8A19~1\ImagingDevices.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaw.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Google\Update\1336~1.151\GOF5E2~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\INTERN~1\ielowutil.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\WINDOW~2\wabmig.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\WI54FB~1\wmlaunch.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\WI54FB~1\wmplayer.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\java.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~4.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\INTERN~1\ieinstal.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\WI54FB~1\wmprph.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\WINDOW~2\WinMail.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\INTERN~1\iexplore.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\WI54FB~1\wmpconfig.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\MOZILL~1\UNINST~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\WINDOW~4\ACCESS~1\wordpad.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\WI54FB~1\setup_wm.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~2.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Google\Update\DISABL~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
| File opened for modification | C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\svchost.com | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\3582-490\H-Output.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Steam.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Steam.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Steam.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1340 wrote to memory of 4880 | N/A | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | C:\Users\Admin\AppData\Local\Temp\3582-490\H-Output.exe |
| PID 1340 wrote to memory of 4880 | N/A | C:\Users\Admin\AppData\Local\Temp\H-Output.exe | C:\Users\Admin\AppData\Local\Temp\3582-490\H-Output.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\H-Output.exe
"C:\Users\Admin\AppData\Local\Temp\H-Output.exe"
C:\Users\Admin\AppData\Local\Temp\3582-490\H-Output.exe
"C:\Users\Admin\AppData\Local\Temp\3582-490\H-Output.exe"
C:\Steam.exe
\Steam.exe
C:\Steam.exe
\Steam.exe
C:\Steam.exe
\Steam.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 5.173.189.20.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\3582-490\H-Output.exe
| MD5 | 0ce3cfb3f39c6ab542bd006acc91998d |
| SHA1 | d34331d9874a888e78be88a7f67d2d8f0cfa5b21 |
| SHA256 | 71a9b9cb96b2b80b352cbac72a40129377dcb09f0e4abb78806decdfda312720 |
| SHA512 | a1f406af385f3b7cecea9b78f19028a5db59a051050a7514c13b7fbdb4092fe5debcc8d0c408f4f50c6da6aa0bfe7e6865722c35af288197863fb70951be42f0 |
memory/4880-6-0x00007FFAA4D43000-0x00007FFAA4D44000-memory.dmp
memory/4880-7-0x0000000000280000-0x00000000002BC000-memory.dmp
C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
| MD5 | 3b73078a714bf61d1c19ebc3afc0e454 |
| SHA1 | 9abeabd74613a2f533e2244c9ee6f967188e4e7e |
| SHA256 | ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29 |
| SHA512 | 75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4 |
memory/4880-69-0x00007FFAA4D40000-0x00007FFAA572C000-memory.dmp
memory/488-70-0x00007FFAA4D40000-0x00007FFAA572C000-memory.dmp
memory/488-71-0x00007FFAA4D40000-0x00007FFAA572C000-memory.dmp
memory/488-73-0x00007FFAA4D40000-0x00007FFAA572C000-memory.dmp
memory/1340-74-0x0000000000400000-0x000000000041B000-memory.dmp
memory/1340-76-0x0000000000400000-0x000000000041B000-memory.dmp
memory/4880-77-0x00007FFAA4D40000-0x00007FFAA572C000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Steam.exe.log
| MD5 | 5a18c0096c3d708f2e104c1d69eea8db |
| SHA1 | a7ed897ef2a0e2fa6c9f00b2c60138213147c0a5 |
| SHA256 | 8ce4225532855b6cbea1da75a3bee1ef18518ab5ad333d311377666628b2a700 |
| SHA512 | 9072a9ff528e966cec0aa12e6e52f45e60c00c4e6a375b14ac7fa882b31fcbc50c5dd3b11f8493e87770e392c4a9b584252baec363eb70b601b77053522922fe |