neshta | fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7

General

Target

fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe
Size

599KB
MD5

fcf48dccf23b377f273e8de9ac0e930c
SHA1

551f15568a81ecf273d25623a0e9cd71be2ad0ca
SHA256

fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7
SHA512

b334dd842f154c396f387dc943299cede0439505443b7f2f674c7e2e50f9937238469f157d008c840c2563639c1c9401df7982564b37225afe28398f5cb159e6

Score

10^/10

neshta discovery persistence spyware

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.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:

fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe

pid process

3296 fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.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:

fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Windows directory 4 IoCs

Processes:

TiWorker.exefb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exesvchost.exe

description	ioc	process
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File opened for modification	C:\Windows\svchost.com	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\DeliveryOptimization\State\keyValueLKG.dat	svchost.exe
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.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\DownlinkBps = "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\Usage\UploadCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadPendingCount = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config	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\DownloadMonthlyLinkLocalBytes = "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\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\PeerInfoCount = "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\UplinkBps = "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\DownloadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadPendingCount = "0"	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\Usage\PriorityDownloadCount = "0"	svchost.exe
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\BkDownloadRatePct = "45"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.568181"	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\DownloadMonthlyGroupBytes = "0"	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\FrDownloadRatePct = "90"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4232"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "7.142074"	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\Config\KVFileExpirationTime = "132899537672397228"	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\MonthID = "2"	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\Config\DODownloadMode = "1"	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\NormalDownloadCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "1.068368"	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\DownloadMode_BackCompat = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkUsageBps = "0"	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\UploadMonthlyInternetBytes = "0"	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\CDNConnectionCount = "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\MonthlyUploadRestriction = "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\Settings	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4136"	svchost.exe

Modifies registry class 1 IoCs

Processes:

fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe

pid	process
3296	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe
3296	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

TiWorker.exe

description	pid	process
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe
Token: SeRestorePrivilege	2760	TiWorker.exe
Token: SeSecurityPrivilege	2760	TiWorker.exe
Token: SeBackupPrivilege	2760	TiWorker.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe

description	pid	process	target process
PID 1460 wrote to memory of 3296	1460	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe
PID 1460 wrote to memory of 3296	1460	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe
PID 1460 wrote to memory of 3296	1460	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe	fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe

C:\Users\Admin\AppData\Local\Temp\fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe
"C:\Users\Admin\AppData\Local\Temp\fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe"
1⤵
- Modifies system executable filetype association
- Checks computer location settings
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1460

C:\Users\Admin\AppData\Local\Temp\3582-490\fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe
"C:\Users\Admin\AppData\Local\Temp\3582-490\fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:3296

C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
1⤵
- Checks processor information in registry
PID:2552

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:2916

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:2760

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

3

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\fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe
MD5
85b321792c82b6122d161a3f23f3d169

SHA1
3b44d7a08a3e7123be2d8bb5ce3b8c81760c3602

SHA256
a206019b7c60a2c94f59c813fb62e808fb8ec00a23264fddd5d16471df9b2466

SHA512
acd329af1ed05c51d5cc2c45d43f77c25084feb506f83c6187e9361f5939ef3dce534af8523dcb294a097d458c87a9f7f497101654991c123de5add985f02425

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\fb7c52dc15715a6a827f9809ed4a35ee50d2fe426212310ec756c608a86b92a7.exe
MD5
85b321792c82b6122d161a3f23f3d169

SHA1
3b44d7a08a3e7123be2d8bb5ce3b8c81760c3602

SHA256
a206019b7c60a2c94f59c813fb62e808fb8ec00a23264fddd5d16471df9b2466

SHA512
acd329af1ed05c51d5cc2c45d43f77c25084feb506f83c6187e9361f5939ef3dce534af8523dcb294a097d458c87a9f7f497101654991c123de5add985f02425

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads