Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
16/02/2022, 17:27
Static task
static1
Behavioral task
behavioral1
Sample
3d44aa7a97608eb72bb53fc9c679e21381867f6e5a2a3.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
General
- Target 3d44aa7a97608eb72bb53fc9c679e21381867f6e5a2a3.exe
- Size 344KB
- Sample220216-v1eb5scac7
- SHA256 3d44aa7a97608eb72bb53fc9c679e21381867f6e5a2a370689dc516c2418a58e
- MD5 0c8e60e686bed8b0debc760b085f89a7
- SHA1 60eae9962d92223a448f978004972f4be2f10588
- SHA512 e0be1a48c2715c820306ca43443f010ab65589525e35755e42df8291dfad083cb2f6f8204f44c4248269221212eaf8f73fdf1c44f24be217d40e42a0b62648f3
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
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systembc
C2
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107.155.124.13:4001
Signatures
- Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
description pid Process procid_target PID 3308 created 3656 3308 WerFault.exe 58 - Drops file in Windows directory 5 IoCs
description ioc Process File created C:\Windows\Tasks\wow64.job 3d44aa7a97608eb72bb53fc9c679e21381867f6e5a2a3.exe File opened for modification C:\Windows\Tasks\wow64.job 3d44aa7a97608eb72bb53fc9c679e21381867f6e5a2a3.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 File opened for modification C:\Windows\WinSxS\pending.xml TiWorker.exe - Program crash 1 IoCs
pid pid_target Process procid_target 2340 3656 WerFault.exe 58 - Checks processor information in registry 2 TTPs 5 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process 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 Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WerFault.exe - Enumerates system info in registry 2 TTPs 2 IoCs
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 56 IoCs
description ioc Process 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\NormalDownloadCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "14.282691" 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\DownloadMonthlyRateFrCnt = "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\Config\DODownloadMode = "1" 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\LANConnectionCount = "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\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\DownloadMonthlyInternetBytes = "0" 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\Usage\CPUpct = "14.289712" 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 (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\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\UplinkUsageBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4076" 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\NormalDownloadPendingCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "7.812148" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "1" 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\UplinkBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4020" 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\Config\KVFileExpirationTime = "132896824362164762" 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\MonthID = "2" 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\MemoryUsageKB = "4296" 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\DownlinkUsageBps = "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\DownloadMonthlyCacheHostBytes = "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\DownloadMonthlyGroupBytes = "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\CDNConnectionCount = "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\DownloadMonthlyRateBkBps = "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\DownloadMonthlyRateBkCnt = "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\DownloadMonthlyLinkLocalBytes = "0" 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 (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\FrDownloadRatePct = "90" 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\MemoryUsageKB = "4292" svchost.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2340 WerFault.exe 2340 WerFault.exe - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe Token: SeRestorePrivilege 2056 TiWorker.exe Token: SeSecurityPrivilege 2056 TiWorker.exe Token: SeBackupPrivilege 2056 TiWorker.exe - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3308 wrote to memory of 3656 3308 WerFault.exe 58 PID 3308 wrote to memory of 3656 3308 WerFault.exe 58
Processes
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C:\Users\Admin\AppData\Local\Temp\3d44aa7a97608eb72bb53fc9c679e21381867f6e5a2a3.exe"C:\Users\Admin\AppData\Local\Temp\3d44aa7a97608eb72bb53fc9c679e21381867f6e5a2a3.exe"1⤵
- Drops file in Windows directory
PID:3656 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3656 -s 4802⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:2340
-
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C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:3124
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C:\Users\Admin\AppData\Local\Temp\3d44aa7a97608eb72bb53fc9c679e21381867f6e5a2a3.exeC:\Users\Admin\AppData\Local\Temp\3d44aa7a97608eb72bb53fc9c679e21381867f6e5a2a3.exe start1⤵PID:2296
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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:3956
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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:2056
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3656 -ip 36561⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3308