vidar | c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d

General

Target

c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe
Size

675KB
MD5

cef76d7fba522e19ac03269b6275ff3f
SHA1

81cbb61d06fcd512081a5dac97a7865d98d7a22b
SHA256

c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d
SHA512

e4728e26ab451ec452fbb5b61fbc7efe4c7e3c138cb91ed2a4bb75a339bf2ee1cdee9f7fa0c03fb398fea3c6dd87c5075bff0095b6e55811198865550bdab33a

Score

10^/10

vidar 937 stealer

Malware Config

Extracted

Family

vidar

Version

48.1

Botnet

937

C2

https://koyu.space/@rspich

Attributes

profile_id
937

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 544 created 2168 544 WerFault.exe c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

description	pid	process	target process
PID 544 created 2168	544	WerFault.exe	c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe

Vidar Stealer 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/2168-131-0x00000000022C0000-0x0000000002395000-memory.dmp	family_vidar
behavioral2/memory/2168-132-0x0000000000400000-0x00000000004D8000-memory.dmp	family_vidar

Drops file in Windows directory 3 IoCs

Processes:

TiWorker.exesvchost.exe

description	ioc	process
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
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

828 2168 WerFault.exe c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe

pid	pid_target	process	target process
828	2168	WerFault.exe	c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe

Checks processor information in registry 2 TTPs 5 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exeMusNotifyIcon.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
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotifyIcon.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotifyIcon.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 51 IoCs

Processes:

svchost.exe

description	ioc	process
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\SwarmCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.013172"	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\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\DownloadMonthlyRateFrCnt = "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\UploadCount = "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\MonthlyUploadRestriction = "0"	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\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\Config\KVFileExpirationTime = "132895556354157271"	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\PriorityDownloadCount = "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\DownloadMonthlyRateFrBps = "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\MemoryUsageKB = "4408"	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\DownloadMonthlyRateBkCnt = "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\NormalDownloadCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "6.617449"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4112"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\BkDownloadRatePct = "45"	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 (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\LinkLocalConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "4.545609"	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\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\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\FrDownloadRatePct = "90"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4056"	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\DownloadMode_BackCompat = "1"	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\MonthID = "2"	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\Usage\CPUpct = "10.008429"	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

WerFault.exe

pid process

828 WerFault.exe
828 WerFault.exe

pid	process
828	WerFault.exe
828	WerFault.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

TiWorker.exe

description	pid	process
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe
Token: SeRestorePrivilege	4072	TiWorker.exe
Token: SeSecurityPrivilege	4072	TiWorker.exe
Token: SeBackupPrivilege	4072	TiWorker.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 544 wrote to memory of 2168	544	WerFault.exe	c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe
PID 544 wrote to memory of 2168	544	WerFault.exe	c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe

C:\Users\Admin\AppData\Local\Temp\c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe
"C:\Users\Admin\AppData\Local\Temp\c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe"
1⤵
PID:2168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2168 -s 1044
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:828

C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
1⤵
- Checks processor information in registry
PID:1900

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:2900

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:4072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2168 -ip 2168
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:544

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2168-130-0x0000000002240000-0x00000000022BB000-memory.dmp

Filesize
492KB

Download
memory/2168-131-0x00000000022C0000-0x0000000002395000-memory.dmp

Filesize
852KB

Download
memory/2168-132-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads