Analysis
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max time kernel
163s -
max time network
175s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
15-02-2022 06:57
Static task
static1
Behavioral task
behavioral1
Sample
b3dd1655ef724dd9429d64625a80474c3b5d74d5c1cc806e11be89435ac0cd5a.exe
Resource
win7-en-20211208
General
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Target
b3dd1655ef724dd9429d64625a80474c3b5d74d5c1cc806e11be89435ac0cd5a.exe
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Size
772KB
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MD5
c0c1c445b62bf70f0de2341e06eb3817
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SHA1
a1cc41eda4ba9a1ffc018739a25548dd63bddfd0
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SHA256
b3dd1655ef724dd9429d64625a80474c3b5d74d5c1cc806e11be89435ac0cd5a
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SHA512
2c50aa38410c0d7668b4bea21e2018046328ca393a755522a86e895aea2511f062bcf123ce2cf8c2fef956f92e7d32dd1a37f9c21562e753e5f5d84c6e080f83
Malware Config
Extracted
vidar
47.9
933
https://mas.to/@kirpich
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profile_id
933
Signatures
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Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
Processes:
WerFault.exedescription pid process target process PID 1892 created 1092 1892 WerFault.exe b3dd1655ef724dd9429d64625a80474c3b5d74d5c1cc806e11be89435ac0cd5a.exe -
Vidar Stealer 2 IoCs
Processes:
resource yara_rule behavioral2/memory/1092-132-0x0000000002750000-0x0000000002826000-memory.dmp family_vidar behavioral2/memory/1092-133-0x0000000000400000-0x00000000004D9000-memory.dmp family_vidar -
Drops file in Windows directory 3 IoCs
Processes:
TiWorker.exesvchost.exedescription 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 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1140 1092 WerFault.exe b3dd1655ef724dd9429d64625a80474c3b5d74d5c1cc806e11be89435ac0cd5a.exe -
Checks processor information in registry 2 TTPs 5 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
MusNotifyIcon.exeWerFault.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz MusNotifyIcon.exe 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 -
Enumerates system info in registry 2 TTPs 2 IoCs
Processes:
WerFault.exedescription 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.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "5.881895" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "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\LinkLocalConnectionCount = "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\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\SwarmCount = "1" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LANConnectionCount = "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\DownloadMode_BackCompat = "1" 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\SwarmCount = "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\NormalDownloadPendingCount = "0" 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\DownloadMonthlyRateBkBps = "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\UploadCount = "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\DownlinkUsageBps = "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\MonthID = "2" 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\CDNConnectionCount = "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\DownloadMonthlyInternetBytes = "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\DownloadMonthlyRateFrCnt = "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\Usage\PriorityDownloadPendingCount = "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\CacheSizeBytes = "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\FrDownloadRatePct = "90" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "2.586209" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4032" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4260" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config 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\DownloadMonthlyRateBkCnt = "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\DownloadMonthlyCacheHostBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132895583763259028" 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\MonthlyUploadRestriction = "0" svchost.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
WerFault.exepid process 1140 WerFault.exe 1140 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
WerFault.exeTiWorker.exedescription pid process Token: SeRestorePrivilege 1140 WerFault.exe Token: SeBackupPrivilege 1140 WerFault.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe Token: SeSecurityPrivilege 3740 TiWorker.exe Token: SeBackupPrivilege 3740 TiWorker.exe Token: SeRestorePrivilege 3740 TiWorker.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
WerFault.exedescription pid process target process PID 1892 wrote to memory of 1092 1892 WerFault.exe b3dd1655ef724dd9429d64625a80474c3b5d74d5c1cc806e11be89435ac0cd5a.exe PID 1892 wrote to memory of 1092 1892 WerFault.exe b3dd1655ef724dd9429d64625a80474c3b5d74d5c1cc806e11be89435ac0cd5a.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b3dd1655ef724dd9429d64625a80474c3b5d74d5c1cc806e11be89435ac0cd5a.exe"C:\Users\Admin\AppData\Local\Temp\b3dd1655ef724dd9429d64625a80474c3b5d74d5c1cc806e11be89435ac0cd5a.exe"1⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1092 -s 17362⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1092 -ip 10921⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
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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
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1092-130-0x0000000000BCD000-0x0000000000C49000-memory.dmpFilesize
496KB
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memory/1092-131-0x0000000000BCD000-0x0000000000C49000-memory.dmpFilesize
496KB
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memory/1092-132-0x0000000002750000-0x0000000002826000-memory.dmpFilesize
856KB
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memory/1092-133-0x0000000000400000-0x00000000004D9000-memory.dmpFilesize
868KB