Analysis
- max time kernel
154s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
21/02/2022, 23:04
Static task
static1
Behavioral task
behavioral1
Sample
DOCUMENT FILE.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
General
- Target DOCUMENT FILE.exe
- Size 360KB
- Sample220221-22kc4sbdg4
- SHA256 847fa8413751c698b7cb1f258a4365d8e50915e4811fa916308f6b0e18cbc17d
- MD5 fbe426a8d46b433667c3a30f38c703ab
- SHA1 bed53dc755559ecc8ed6a84f7efbe877937324de
- SHA512 8c22771d773da05bb36d0f4285c25b61157ad42c044d6029f98103b755b5567b2964d225fd18d9d0295bb25a002ba8c9dec9a9567862822ced0ea108f26c8956
- MD5 SHA1 SHA512
Malware Config
Signatures
- Taurus Stealer Payload 3 IoCs
resource yara_rule behavioral2/memory/2020-131-0x00000000048B0000-0x00000000048E9000-memory.dmp family_taurus_stealer behavioral2/memory/3080-132-0x0000000000400000-0x000000000043A000-memory.dmp family_taurus_stealer behavioral2/memory/3080-133-0x0000000000400000-0x000000000043A000-memory.dmp family_taurus_stealer - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2020 set thread context of 3080 2020 DOCUMENT FILE.exe 57 - Drops file in Windows directory 3 IoCs
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 - Delays execution with timeout.exe 1 IoCs
pid Process 3800 timeout.exe - Modifies data under HKEY_USERS 54 IoCs
description 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\DownloadMonthlyRateFrBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "4" 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\DownloadMonthlyRateBkBps = "1157726" 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\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\LANConnectionCount = "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\UploadMonthlyInternetBytes = "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 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\MemoryUsageKB = "4276" 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\SwarmCount = "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\DownlinkUsageBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "0" 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\NormalDownloadCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4096" 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\DownloadMonthlyCdnBytes = "90228624" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthlyUploadRestriction = "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\Usage\PriorityDownloadPendingCount = "0" 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\MonthID = "1" 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\BkDownloadRatePct = "45" 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\Config\KVFileExpirationTime = "132901347342714537" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkUsageBps = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "18.750960" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config 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\DownloadMonthlyRateFrCnt = "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\UploadMonthlyLanBytes = "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\UplinkBps = "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\DownloadMonthlyLanBytes = "0" 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\Usage 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\DownloadMonthlyRateBkBps = "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\NormalDownloadPendingCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "17.856249" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.000000" svchost.exe - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe Token: SeRestorePrivilege 3768 TiWorker.exe Token: SeSecurityPrivilege 3768 TiWorker.exe Token: SeBackupPrivilege 3768 TiWorker.exe - Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 2020 wrote to memory of 3080 2020 DOCUMENT FILE.exe 57 PID 2020 wrote to memory of 3080 2020 DOCUMENT FILE.exe 57 PID 2020 wrote to memory of 3080 2020 DOCUMENT FILE.exe 57 PID 2020 wrote to memory of 3080 2020 DOCUMENT FILE.exe 57 PID 2020 wrote to memory of 3080 2020 DOCUMENT FILE.exe 57 PID 2020 wrote to memory of 3080 2020 DOCUMENT FILE.exe 57 PID 2020 wrote to memory of 3080 2020 DOCUMENT FILE.exe 57 PID 2020 wrote to memory of 3080 2020 DOCUMENT FILE.exe 57 PID 2020 wrote to memory of 3080 2020 DOCUMENT FILE.exe 57 PID 3080 wrote to memory of 3036 3080 DOCUMENT FILE.exe 72 PID 3080 wrote to memory of 3036 3080 DOCUMENT FILE.exe 72 PID 3080 wrote to memory of 3036 3080 DOCUMENT FILE.exe 72 PID 3036 wrote to memory of 3800 3036 cmd.exe 74 PID 3036 wrote to memory of 3800 3036 cmd.exe 74 PID 3036 wrote to memory of 3800 3036 cmd.exe 74
Processes
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C:\Users\Admin\AppData\Local\Temp\DOCUMENT FILE.exe"C:\Users\Admin\AppData\Local\Temp\DOCUMENT FILE.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2020 -
C:\Users\Admin\AppData\Local\Temp\DOCUMENT FILE.exe"C:\Users\Admin\AppData\Local\Temp\DOCUMENT FILE.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:3080 -
C:\Windows\SysWOW64\cmd.exe/c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\DOCUMENT FILE.exe3⤵
- Suspicious use of WriteProcessMemory
PID:3036 -
C:\Windows\SysWOW64\timeout.exetimeout /t 34⤵
- Delays execution with timeout.exe
PID:3800
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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
PID:452
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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
PID:3768