Analysis
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max time kernel
632s -
max time network
373s -
platform
windows11_x64 -
resource
win11 -
submitted
22-10-2021 14:38
Static task
static1
Behavioral task
behavioral1
Sample
Fri0575b7d291a755f8.exe
Resource
win7-ja-20210920
Behavioral task
behavioral2
Sample
Fri0575b7d291a755f8.exe
Resource
win7-en-20211014
Behavioral task
behavioral3
Sample
Fri0575b7d291a755f8.exe
Resource
win7-de-20210920
Behavioral task
behavioral4
Sample
Fri0575b7d291a755f8.exe
Resource
win11
Behavioral task
behavioral5
Sample
Fri0575b7d291a755f8.exe
Resource
win10-ja-20211014
Behavioral task
behavioral6
Sample
Fri0575b7d291a755f8.exe
Resource
win10-en-20211014
Behavioral task
behavioral7
Sample
Fri0575b7d291a755f8.exe
Resource
win10-de-20210920
General
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Target
Fri0575b7d291a755f8.exe
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Size
75KB
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MD5
3399436f50fad870cade4f68de68a76d
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SHA1
a690dd92fa2902ec5881b1ed55b1bb7316f48b70
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SHA256
9e9519db3a55dd28cc85ddb8e02990758fa23d0f387e006de073e30277bce862
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SHA512
c558ca8b467e3375d9f5e5db9801ce400cd5d0ce86b53ec4fe0d2452284afb32b642d915e6c89d9ec34bda1f81a75ad19c3aced770732573a0f55bfd0de6de03
Malware Config
Signatures
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Sets service image path in registry 2 TTPs
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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Drops file in Windows directory 8 IoCs
Processes:
svchost.exeTiWorker.exedescription ioc process File opened for modification C:\Windows\WindowsUpdate.log svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.edb svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm svchost.exe File opened for modification C:\Windows\SoftwareDistribution\ReportingEvents.log 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:
svchost.exedescription ioc process Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz svchost.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
WaaSMedicAgent.exesvchost.exeWaaSMedicAgent.exeWaaSMedicAgent.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
Fri0575b7d291a755f8.exesvchost.exesvchost.exeTiWorker.exedescription pid process Token: SeDebugPrivilege 3124 Fri0575b7d291a755f8.exe Token: SeShutdownPrivilege 2052 svchost.exe Token: SeCreatePagefilePrivilege 2052 svchost.exe Token: SeShutdownPrivilege 2052 svchost.exe Token: SeCreatePagefilePrivilege 2052 svchost.exe Token: SeShutdownPrivilege 2052 svchost.exe Token: SeCreatePagefilePrivilege 2052 svchost.exe Token: SeShutdownPrivilege 4060 svchost.exe Token: SeCreatePagefilePrivilege 4060 svchost.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe Token: SeRestorePrivilege 1888 TiWorker.exe Token: SeSecurityPrivilege 1888 TiWorker.exe Token: SeBackupPrivilege 1888 TiWorker.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
svchost.exedescription pid process target process PID 4060 wrote to memory of 2648 4060 svchost.exe MoUsoCoreWorker.exe PID 4060 wrote to memory of 2648 4060 svchost.exe MoUsoCoreWorker.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Fri0575b7d291a755f8.exe"C:\Users\Admin\AppData\Local\Temp\Fri0575b7d291a755f8.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3124
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe 62f25bfb7abbcd7cb5fcfcaf4690af3f 01aP/BNOmUa3FfCqNSBYMA.0.1.0.3.01⤵
- Modifies data under HKEY_USERS
PID:1592
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:2052
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s UsoSvc1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4060 -
C:\Windows\uus\AMD64\MoUsoCoreWorker.exeC:\Windows\uus\AMD64\MoUsoCoreWorker.exe2⤵PID:2648
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C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.22000.100_none_04da31ff4c67c24a\TiWorker.exeC:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.22000.100_none_04da31ff4c67c24a\TiWorker.exe -Embedding1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1888
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe 62f25bfb7abbcd7cb5fcfcaf4690af3f 01aP/BNOmUa3FfCqNSBYMA.0.1.0.3.01⤵
- Modifies data under HKEY_USERS
PID:5068
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe 62f25bfb7abbcd7cb5fcfcaf4690af3f 01aP/BNOmUa3FfCqNSBYMA.0.1.0.3.01⤵
- Modifies data under HKEY_USERS
PID:1720