Analysis
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max time kernel
142s -
max time network
133s -
platform
windows11_x64 -
resource
win11 -
submitted
18-08-2021 21:21
Static task
static1
Behavioral task
behavioral1
Sample
7ec95111e00ce9c19ebf88e9683363390873451b00e0348bca4d80ef1e4b20ed.exe
Resource
win7v20210410
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
7ec95111e00ce9c19ebf88e9683363390873451b00e0348bca4d80ef1e4b20ed.exe
Resource
win11
windows11_x64
0 signatures
0 seconds
Behavioral task
behavioral3
Sample
7ec95111e00ce9c19ebf88e9683363390873451b00e0348bca4d80ef1e4b20ed.exe
Resource
win10v20210408
windows10_x64
0 signatures
0 seconds
General
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Target
7ec95111e00ce9c19ebf88e9683363390873451b00e0348bca4d80ef1e4b20ed.exe
-
Size
22KB
-
MD5
c6b6ec00b64069d66c8d14d65f7cfd8f
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SHA1
b90e6bf12728fa3b0984aabc32b39f1db082a1da
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SHA256
7ec95111e00ce9c19ebf88e9683363390873451b00e0348bca4d80ef1e4b20ed
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SHA512
c9d7c97c63806e87804c33530f48ba950542ba28421d354cb287c9bf027ff5a853b76200e87eadd3cde0469f4b8c93f8c4bc0e71f5e4aa1cdf33e05c0673254a
Score
10/10
Malware Config
Signatures
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Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
description pid Process procid_target PID 4220 created 4972 4220 WerFault.exe 79 -
Drops file in System32 directory 6 IoCs
description ioc Process File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 WaaSMedicAgent.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 sihclient.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 sihclient.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 WaaSMedicAgent.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 WaaSMedicAgent.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 WaaSMedicAgent.exe -
Drops file in Windows directory 6 IoCs
description ioc Process File opened for modification C:\Windows\SoftwareDistribution\Download\d62540ea7d8b4a9d1958e44f689fb27e\BITCD8C.tmp svchost.exe File opened for modification C:\Windows\SoftwareDistribution\Download\d62540ea7d8b4a9d1958e44f689fb27e\Windows10.0-KB5004342-x64-NDP48.cab 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 File opened for modification C:\Windows\SoftwareDistribution\SLS\522D76A4-93E1-47F8-B8CE-07C937AD1A1E\sls.cab sihclient.exe File opened for modification C:\Windows\SoftwareDistribution\SLS\E7A50285-D08D-499D-9FF8-180FDC2332BC\sls.cab sihclient.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 4124 4972 WerFault.exe 79 -
Checks processor information in registry 2 TTPs 7 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\Identifier WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform Specific Field 1 WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision WerFault.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 -
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 64 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\S-1-5-19\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs sihclient.exe Key created \REGISTRY\USER\S-1-5-19\Software\Policies svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\S-1-5-19\Software\Policies\Microsoft\SystemCertificates\CA\CRLs svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\S-1-5-19\Software svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\S-1-5-19\Software\Microsoft\SystemCertificates\CA\CTLs svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\S-1-5-19\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\S-1-5-19\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\S-1-5-19\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust sihclient.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\Microsoft\SystemCertificates\Disallowed\CTLs sihclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4124 WerFault.exe 4124 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe Token: SeRestorePrivilege 4680 TiWorker.exe Token: SeSecurityPrivilege 4680 TiWorker.exe Token: SeBackupPrivilege 4680 TiWorker.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4220 wrote to memory of 4972 4220 WerFault.exe 79 PID 4220 wrote to memory of 4972 4220 WerFault.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\7ec95111e00ce9c19ebf88e9683363390873451b00e0348bca4d80ef1e4b20ed.exe"C:\Users\Admin\AppData\Local\Temp\7ec95111e00ce9c19ebf88e9683363390873451b00e0348bca4d80ef1e4b20ed.exe"1⤵PID:4972
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 4972 -s 1522⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:4124
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 448 -p 4972 -ip 49721⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:4220
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C:\Windows\System32\sihclient.exeC:\Windows\System32\sihclient.exe /cv sjuMneG/lkSK2C7c/HduvQ.0.21⤵
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:4584
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p -s BITS1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:2996
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s SSDPSRV1⤵PID:4496
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe f3a62cb651cc7b970e2dca730e260b2e sjuMneG/lkSK2C7c/HduvQ.0.1.0.3.01⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:3112
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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:4680
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe f3a62cb651cc7b970e2dca730e260b2e sjuMneG/lkSK2C7c/HduvQ.0.1.0.3.01⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1176
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe f3a62cb651cc7b970e2dca730e260b2e sjuMneG/lkSK2C7c/HduvQ.0.1.0.3.01⤵
- Modifies data under HKEY_USERS
PID:2244