Analysis
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max time kernel
175s -
max time network
184s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
15-02-2022 13:27
Static task
static1
Behavioral task
behavioral1
Sample
50aabc18f8f684fe8a73a775b8170cc8e6ee160425f4f2206a4f012b5b3e2b30.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
General
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Target
50aabc18f8f684fe8a73a775b8170cc8e6ee160425f4f2206a4f012b5b3e2b30.exe
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Size
601KB
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MD5
c8f77e76d94ab2a6f82915a716dac0ea
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SHA1
0f0664ba5c50f6965677b05742f988d1a1f6af25
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SHA256
50aabc18f8f684fe8a73a775b8170cc8e6ee160425f4f2206a4f012b5b3e2b30
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SHA512
c68d894bddf4a4f2b69dbc395b6d20e84da32229ff6e8182531ca3605ee210ab66b31b800d0fdc1bbeab0f4ee75dd15ac992eff0bf5071f307cc4f6a3eac5907
Malware Config
Extracted
Family
vidar
Version
48.6
Botnet
937
C2
https://mastodon.online/@valhalla
https://koyu.space/@valhalla
Attributes
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profile_id
937
Signatures
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Vidar Stealer 2 IoCs
Processes:
resource yara_rule behavioral2/memory/3448-132-0x00000000022B0000-0x0000000002385000-memory.dmp family_vidar behavioral2/memory/3448-133-0x0000000000400000-0x00000000004D8000-memory.dmp family_vidar -
Drops file in Windows directory 3 IoCs
Processes:
svchost.exeTiWorker.exedescription 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.
Processes:
MusNotifyIcon.exedescription 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.exedescription ioc process 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\DownloadMonthlyCacheHostBytes = "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\CacheSizeBytes = "0" 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\Settings 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\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 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\Config\KVFileExpirationTime = "132895817817514951" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.940446" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4144" 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\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\DownloadMode_BackCompat = "1" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLinkLocalBytes = "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\InternetConnectionCount = "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 = "25.007282" 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\DownloadMonthlyLanBytes = "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\DownloadMonthlyRateFrBps = "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\BkDownloadRatePct = "45" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.263158" 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\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\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\PriorityDownloadPendingCount = "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\UplinkBps = "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\PriorityDownloadCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4044" 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\DownloadMonthlyRateBkCnt = "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\LANConnectionCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LinkLocalConnectionCount = "0" svchost.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
TiWorker.exedescription pid process Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe Token: SeRestorePrivilege 820 TiWorker.exe Token: SeSecurityPrivilege 820 TiWorker.exe Token: SeBackupPrivilege 820 TiWorker.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\50aabc18f8f684fe8a73a775b8170cc8e6ee160425f4f2206a4f012b5b3e2b30.exe"C:\Users\Admin\AppData\Local\Temp\50aabc18f8f684fe8a73a775b8170cc8e6ee160425f4f2206a4f012b5b3e2b30.exe"1⤵
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C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
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C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exeC:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken