neshta | 8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483

General

Target

8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe
Size

326KB
MD5

2b0ccacfcdc7caf15e34dca17b3c9cfb
SHA1

5b9f8260c97eb96f2e6246ded1e2897a40681d82
SHA256

8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483
SHA512

0c1ec93ba280cc7423b5971bc47e02cdf2477155e3ad703f9a136518b5536f8974f74d99bd19b9e947f51b73430bdaa938316ef3a1317ff83b5517fc841173fa

Score

10^/10

neshta persistence spyware

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe

Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
persistence spyware neshta
Executes dropped EXE 1 IoCs

Processes:

8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe

pid process

2856 8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe

pid	process
2856	8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe

Drops file in Windows directory 4 IoCs

Processes:

TiWorker.exe8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exesvchost.exe

description	ioc	process
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File opened for modification	C:\Windows\svchost.com	8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\DeliveryOptimization\State\keyValueLKG.dat	svchost.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

MusNotifyIcon.exe

description	ioc	process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotifyIcon.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotifyIcon.exe

Modifies data under HKEY_USERS 49 IoCs

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthID = "2"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\GeoVersion_EndpointFullUri = "https://geover.prod.do.dsp.mp.microsoft.com/geoversion"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadPendingCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.000000"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadCount = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyGroupBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkUsageBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\BkDownloadRatePct = "45"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadRatePct = "100"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DODownloadMode = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkBps = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\Geo_EndpointFullUri = "https://geo.prod.do.dsp.mp.microsoft.com/geo"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CacheSizeBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LinkLocalConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4148"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Settings	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\FrDownloadRatePct = "90"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.264750"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132894542445837928"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CDNConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LANConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4292"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadPendingCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLinkLocalBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PeerInfoCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkUsageBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DownloadMode_BackCompat = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCacheHostBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\GroupConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthlyUploadRestriction = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.285714"	svchost.exe

Modifies registry class 1 IoCs

Processes:

8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

Processes:

TiWorker.exe

description	pid	process
Token: SeSecurityPrivilege	2896	TiWorker.exe
Token: SeRestorePrivilege	2896	TiWorker.exe
Token: SeBackupPrivilege	2896	TiWorker.exe
Token: SeBackupPrivilege	2896	TiWorker.exe
Token: SeRestorePrivilege	2896	TiWorker.exe
Token: SeSecurityPrivilege	2896	TiWorker.exe
Token: SeBackupPrivilege	2896	TiWorker.exe
Token: SeRestorePrivilege	2896	TiWorker.exe
Token: SeSecurityPrivilege	2896	TiWorker.exe
Token: SeBackupPrivilege	2896	TiWorker.exe
Token: SeRestorePrivilege	2896	TiWorker.exe
Token: SeSecurityPrivilege	2896	TiWorker.exe
Token: SeBackupPrivilege	2896	TiWorker.exe
Token: SeRestorePrivilege	2896	TiWorker.exe
Token: SeSecurityPrivilege	2896	TiWorker.exe
Token: SeBackupPrivilege	2896	TiWorker.exe
Token: SeRestorePrivilege	2896	TiWorker.exe
Token: SeSecurityPrivilege	2896	TiWorker.exe
Token: SeBackupPrivilege	2896	TiWorker.exe
Token: SeRestorePrivilege	2896	TiWorker.exe
Token: SeSecurityPrivilege	2896	TiWorker.exe
Token: SeBackupPrivilege	2896	TiWorker.exe
Token: SeRestorePrivilege	2896	TiWorker.exe
Token: SeSecurityPrivilege	2896	TiWorker.exe
Token: SeBackupPrivilege	2896	TiWorker.exe
Token: SeRestorePrivilege	2896	TiWorker.exe
Token: SeSecurityPrivilege	2896	TiWorker.exe
Token: SeBackupPrivilege	2896	TiWorker.exe
Token: SeRestorePrivilege	2896	TiWorker.exe
Token: SeSecurityPrivilege	2896	TiWorker.exe
Token: SeBackupPrivilege	2896	TiWorker.exe
Token: SeRestorePrivilege	2896	TiWorker.exe
Token: SeSecurityPrivilege	2896	TiWorker.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe

description	pid	process	target process
PID 3572 wrote to memory of 2856	3572	8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe	8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe
PID 3572 wrote to memory of 2856	3572	8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe	8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe
PID 3572 wrote to memory of 2856	3572	8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe	8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe

C:\Users\Admin\AppData\Local\Temp\8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe
"C:\Users\Admin\AppData\Local\Temp\8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe"
1⤵
- Modifies system executable filetype association
- Checks computer location settings
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3572

C:\Users\Admin\AppData\Local\Temp\3582-490\8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe
"C:\Users\Admin\AppData\Local\Temp\3582-490\8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe"
2⤵
- Executes dropped EXE
PID:2856

C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
1⤵
- Checks processor information in registry
PID:2492

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:4088

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\3582-490\8df3bf67c0512a8452666da8b6fcd9220150a296b8d4e100f2ed9e184452b483.exe
MD5
738aa3c26bd6cabac9aedc19c85c581e

SHA1
b75bcee427e4bf48608dfe0223aa82d3dc9b9391

SHA256
811b1d6eebedecb3716af71ea6970d6dda384a632b2e827230c7df563d17ffdb

SHA512
4ad35fbc1653e0c218e2845a6e7ff66dbb693255b0875a59cb3e5f517328a719d8871bfc0c5dbdca245e404c2b91e6cfbd5fea1f7c31fddcf60b4aa0cb20d9ac

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads