100f12ddd5d0c791f0113c7eb95dae01760b6095d323ceffc2041082657db55a

General

Target

100f12ddd5d0c791f0113c7eb95dae01760b6095d323ceffc2041082657db55a.exe
Size

100KB
MD5

84727567570b152ed8715ebec503c40f
SHA1

3b49ada75b343beb2a252efdac01d6c5a6f64a11
SHA256

100f12ddd5d0c791f0113c7eb95dae01760b6095d323ceffc2041082657db55a
SHA512

adb1a8ece00fcc867a3483d21535432b8dd69f580125590baec33180bf69f0c2e17c173816f708c5902a1a1432381a6850fb7dfdca573741b6ded9121eedac60

Score

4^/10

Malware Config

Signatures

Drops file in Windows directory 3 IoCs

Processes:

TiWorker.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\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\DeliveryOptimization\State\keyValueLKG.dat	svchost.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
3600	3352	WerFault.exe	100f12ddd5d0c791f0113c7eb95dae01760b6095d323ceffc2041082657db55a.exe
3120	3352	WerFault.exe	100f12ddd5d0c791f0113c7eb95dae01760b6095d323ceffc2041082657db55a.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.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 (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 (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\PriorityDownloadPendingCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.655866"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "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\Config\DODownloadMode = "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\DownloadMonthlyInternetBytes = "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\CacheSizeBytes = "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\GroupConnectionCount = "0"	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
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\DownloadMonthlyCdnBytes = "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\PeerInfoCount = "0"	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\DownlinkUsageBps = "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\Config\DownloadMode_BackCompat = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4136"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthlyUploadRestriction = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4216"	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\DownloadMonthlyLinkLocalBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkBps = "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\PriorityDownloadCount = "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 = "0.607288"	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\DownloadMonthlyGroupBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132892973112425515"	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\LinkLocalConnectionCount = "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\DownloadMonthlyLanBytes = "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\NormalDownloadPendingCount = "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\UploadMonthlyLanBytes = "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\UploadRatePct = "100"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

WerFault.exe

pid process

3600 WerFault.exe
3600 WerFault.exe

pid	process
3600	WerFault.exe
3600	WerFault.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

WerFault.exeTiWorker.exe

description	pid	process
Token: SeRestorePrivilege	3600	WerFault.exe
Token: SeBackupPrivilege	3600	WerFault.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe
Token: SeSecurityPrivilege	1260	TiWorker.exe
Token: SeBackupPrivilege	1260	TiWorker.exe
Token: SeRestorePrivilege	1260	TiWorker.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

100f12ddd5d0c791f0113c7eb95dae01760b6095d323ceffc2041082657db55a.exe

description	pid	process	target process
PID 3352 wrote to memory of 3600	3352	100f12ddd5d0c791f0113c7eb95dae01760b6095d323ceffc2041082657db55a.exe	WerFault.exe
PID 3352 wrote to memory of 3600	3352	100f12ddd5d0c791f0113c7eb95dae01760b6095d323ceffc2041082657db55a.exe	WerFault.exe
PID 3352 wrote to memory of 3600	3352	100f12ddd5d0c791f0113c7eb95dae01760b6095d323ceffc2041082657db55a.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\100f12ddd5d0c791f0113c7eb95dae01760b6095d323ceffc2041082657db55a.exe
"C:\Users\Admin\AppData\Local\Temp\100f12ddd5d0c791f0113c7eb95dae01760b6095d323ceffc2041082657db55a.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 340
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 340
2⤵
- Program crash
PID:3120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3352 -ip 3352
1⤵
PID:2972

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:2696

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:1260

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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