vidar | a5ffaa927133ee1e84bedf01ab5213831b47f00b566d0340b625cd7f85a9bbc6

General

Target

a5ffaa927133ee1e84bedf01ab5213831b47f00b566d0340b625cd7f85a9bbc6.exe
Size

605KB
MD5

61f3772d0a593740544b703d1934da3d
SHA1

e7c994a9dd3b2a02de9cbd276d3c96dad44d801e
SHA256

a5ffaa927133ee1e84bedf01ab5213831b47f00b566d0340b625cd7f85a9bbc6
SHA512

6abb8a90c8e79e40e71505b266c8ad9288115c569d8688be9932e4aff3658700d0e3052df6f45b7175059e44b71a609d854deaf4cf9713e2b48161c26205da0b

Score

10^/10

vidar 937 stealer

Malware Config

Extracted

Family

vidar

Version

48.7

Botnet

937

C2

https://mstdn.social/@anapa

https://mastodon.social/@mniami

Attributes

profile_id
937

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Vidar Stealer 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/1812-131-0x00000000023A0000-0x0000000002475000-memory.dmp	family_vidar
behavioral2/memory/1812-132-0x0000000000400000-0x00000000004D8000-memory.dmp	family_vidar

Drops file in Windows directory 3 IoCs

Processes:

svchost.exeTiWorker.exe

description	ioc	process
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
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.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 51 IoCs

Processes:

svchost.exe

description	ioc	process
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\CDNConnectionCount = "0"	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\Config\DODownloadMode = "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\DownloadMonthlyLanBytes = "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\MonthID = "2"	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\UploadRatePct = "100"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "1.551750"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4096"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "5.172255"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4304"	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\DownloadMonthlyRateBkBps = "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\DownlinkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkBps = "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\Config\DownloadMode_BackCompat = "1"	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\UploadMonthlyLanBytes = "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\DownloadMonthlyCdnBytes = "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 (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\DownloadMonthlyRateFrBps = "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\GroupConnectionCount = "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\MemoryUsageKB = "3888"	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\UplinkUsageBps = "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\DownloadMonthlyCacheHostBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrCnt = "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\LANConnectionCount = "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\PriorityDownloadPendingCount = "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\DownloadMonthlyGroupBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132895599916604706"	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\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\SwarmCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.013578"	svchost.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

TiWorker.exe

description	pid	process
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe
Token: SeRestorePrivilege	2696	TiWorker.exe
Token: SeSecurityPrivilege	2696	TiWorker.exe
Token: SeBackupPrivilege	2696	TiWorker.exe

C:\Users\Admin\AppData\Local\Temp\a5ffaa927133ee1e84bedf01ab5213831b47f00b566d0340b625cd7f85a9bbc6.exe
"C:\Users\Admin\AppData\Local\Temp\a5ffaa927133ee1e84bedf01ab5213831b47f00b566d0340b625cd7f85a9bbc6.exe"
1⤵
PID:1812

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:3368

C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
1⤵
- Checks processor information in registry
PID:1776

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:2696

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1812-130-0x0000000002250000-0x00000000022CB000-memory.dmp

Filesize
492KB

Download
memory/1812-131-0x00000000023A0000-0x0000000002475000-memory.dmp

Filesize
852KB

Download
memory/1812-132-0x0000000000400000-0x00000000004D8000-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