vidar | 9356506457dc510ea9bb2743be661106573beb605dc6127bbf0a82b524eb8c88

General

Target

9356506457dc510ea9bb2743be661106573beb605dc6127bbf0a82b524eb8c88.exe
Size

3.6MB
MD5

81a66564a1a5c2c2b7189681326804aa
SHA1

ac5e9117eea3f03baaf261125492610ec0bbdeb8
SHA256

9356506457dc510ea9bb2743be661106573beb605dc6127bbf0a82b524eb8c88
SHA512

e445e8a7f61353036ffb8c0b38efb5945411b6c7ff58f7920aa6b9328616da5f1fc87894c6ddf301eaec1226c5ca766d7aaabe3bbe7de4fb6a0a3356e8b513ec

Score

10^/10

vidar 932 stealer vmprotect

Malware Config

Extracted

Family

vidar

Version

48.1

Botnet

932

C2

https://koyu.space/@rspich

Attributes

profile_id
932

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 3980 created 1668 3980 WerFault.exe 9356506457dc510ea9bb2743be661106573beb605dc6127bbf0a82b524eb8c88.exe
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

description	pid	process	target process
PID 3980 created 1668	3980	WerFault.exe	9356506457dc510ea9bb2743be661106573beb605dc6127bbf0a82b524eb8c88.exe

Vidar Stealer 1 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/1668-130-0x0000000000400000-0x0000000000AF7000-memory.dmp	family_vidar

VMProtect packed file 1 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
behavioral2/memory/1668-130-0x0000000000400000-0x0000000000AF7000-memory.dmp	vmprotect

Drops file in Windows directory 4 IoCs

Processes:

TiWorker.exeWerFault.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 created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	WerFault.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\DeliveryOptimization\State\keyValueLKG.dat	svchost.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1400 1668 WerFault.exe 9356506457dc510ea9bb2743be661106573beb605dc6127bbf0a82b524eb8c88.exe

pid	pid_target	process	target process
1400	1668	WerFault.exe	9356506457dc510ea9bb2743be661106573beb605dc6127bbf0a82b524eb8c88.exe

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\MemoryUsageKB = "4324"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization	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\LANConnectionCount = "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\DownloadMonthlyRateFrCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.000000"	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\Config\DownloadMode_BackCompat = "1"	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\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\Usage\DownloadMonthlyRateBkBps = "0"	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\DownlinkUsageBps = "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\SwarmCount = "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 (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\LinkLocalConnectionCount = "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\MemoryUsageKB = "4120"	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\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\MonthID = "2"	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\DownloadMonthlyRateBkCnt = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "2.777579"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "8.827172"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadPendingCount = "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\SwarmCount = "1"	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\MonthlyUploadRestriction = "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\UplinkBps = "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
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\KVFileExpirationTime = "132895623274877502"	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\GroupConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "0"	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

WerFault.exe

pid process

1400 WerFault.exe
1400 WerFault.exe

pid	process
1400	WerFault.exe
1400	WerFault.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

TiWorker.exe

description	pid	process
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe
Token: SeRestorePrivilege	3896	TiWorker.exe
Token: SeSecurityPrivilege	3896	TiWorker.exe
Token: SeBackupPrivilege	3896	TiWorker.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 3980 wrote to memory of 1668	3980	WerFault.exe	9356506457dc510ea9bb2743be661106573beb605dc6127bbf0a82b524eb8c88.exe
PID 3980 wrote to memory of 1668	3980	WerFault.exe	9356506457dc510ea9bb2743be661106573beb605dc6127bbf0a82b524eb8c88.exe

C:\Users\Admin\AppData\Local\Temp\9356506457dc510ea9bb2743be661106573beb605dc6127bbf0a82b524eb8c88.exe
"C:\Users\Admin\AppData\Local\Temp\9356506457dc510ea9bb2743be661106573beb605dc6127bbf0a82b524eb8c88.exe"
1⤵
PID:1668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1668 -s 1752
2⤵
- Drops file in Windows directory
- Program crash
- Suspicious behavior: EnumeratesProcesses
PID:1400

C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
1⤵
- Checks processor information in registry
PID:2872

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:3916

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:3896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1668 -ip 1668
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3980

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1668-130-0x0000000000400000-0x0000000000AF7000-memory.dmp

Filesize
7.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads