Analysis
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max time kernel
131s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
01-02-2022 09:07
Static task
static1
Behavioral task
behavioral1
Sample
d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2.dll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2.dll
Resource
win10v2004-en-20220112
General
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Target
d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2.dll
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Size
458KB
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MD5
6099bbf0f6f85495929ddfc9b66d6992
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SHA1
07849ba4d2d9cb2d13d40ceaf37965159a53c852
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SHA256
d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2
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SHA512
3fd071ce5bc7cbfa3090ee260d57c7e98ae16f686396edb29d49cb254cbfb853adfd955e68bd98d4302b23e671c272b8ec76eaac8fae93c54224e6988a760378
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6b850cafa14862fd
https://mazedecrypt.top/6b850cafa14862fd
Signatures
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Maze
Ransomware family also known as ChaCha.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies extensions of user files 7 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\ConvertSave.crw => C:\Users\Admin\Pictures\ConvertSave.crw.O427W regsvr32.exe File renamed C:\Users\Admin\Pictures\FormatInitialize.tif => C:\Users\Admin\Pictures\FormatInitialize.tif.BH2zAjv regsvr32.exe File renamed C:\Users\Admin\Pictures\InitializeSet.crw => C:\Users\Admin\Pictures\InitializeSet.crw.BH2zAjv regsvr32.exe File renamed C:\Users\Admin\Pictures\MeasureUnpublish.tif => C:\Users\Admin\Pictures\MeasureUnpublish.tif.RoOO48W regsvr32.exe File opened for modification C:\Users\Admin\Pictures\AddClose.tiff regsvr32.exe File renamed C:\Users\Admin\Pictures\AddClose.tiff => C:\Users\Admin\Pictures\AddClose.tiff.O427W regsvr32.exe File renamed C:\Users\Admin\Pictures\CheckpointApprove.crw => C:\Users\Admin\Pictures\CheckpointApprove.crw.O427W regsvr32.exe -
Sets service image path in registry 2 TTPs
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Drops startup file 4 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6b850cafa14862fd.tmp regsvr32.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\6b850cafa14862fd.tmp regsvr32.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\111.bmp" regsvr32.exe -
Drops file in Program Files directory 22 IoCs
description ioc Process File opened for modification C:\Program Files\ConnectPush.ini regsvr32.exe File opened for modification C:\Program Files\JoinOpen.css regsvr32.exe File opened for modification C:\Program Files\MoveRestore.crw regsvr32.exe File opened for modification C:\Program Files\ResetConvertFrom.dxf regsvr32.exe File opened for modification C:\Program Files\SearchPush.zip regsvr32.exe File opened for modification C:\Program Files\AddShow.vstm regsvr32.exe File opened for modification C:\Program Files\CompleteHide.jpg regsvr32.exe File opened for modification C:\Program Files\DebugReset.gif regsvr32.exe File opened for modification C:\Program Files\RenameUninstall.vb regsvr32.exe File opened for modification C:\Program Files\SkipFind.xps regsvr32.exe File opened for modification C:\Program Files\StartUnpublish.png regsvr32.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt regsvr32.exe File created C:\Program Files\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\AssertConvertFrom.nfo regsvr32.exe File opened for modification C:\Program Files\JoinWait.cmd regsvr32.exe File opened for modification C:\Program Files\CopyConvert.vsdm regsvr32.exe File opened for modification C:\Program Files\PublishConvert.wma regsvr32.exe File opened for modification C:\Program Files\TestSend.jpg regsvr32.exe File opened for modification C:\Program Files (x86)\6b850cafa14862fd.tmp regsvr32.exe File opened for modification C:\Program Files\6b850cafa14862fd.tmp regsvr32.exe File opened for modification C:\Program Files\CompleteSelect.avi regsvr32.exe File opened for modification C:\Program Files\ConvertFromTrace.txt regsvr32.exe -
Modifies data under HKEY_USERS 41 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\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates 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\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 WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\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\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 848 regsvr32.exe 848 regsvr32.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
description pid Process Token: SeBackupPrivilege 880 vssvc.exe Token: SeRestorePrivilege 880 vssvc.exe Token: SeAuditPrivilege 880 vssvc.exe Token: SeIncreaseQuotaPrivilege 3092 wmic.exe Token: SeSecurityPrivilege 3092 wmic.exe Token: SeTakeOwnershipPrivilege 3092 wmic.exe Token: SeLoadDriverPrivilege 3092 wmic.exe Token: SeSystemProfilePrivilege 3092 wmic.exe Token: SeSystemtimePrivilege 3092 wmic.exe Token: SeProfSingleProcessPrivilege 3092 wmic.exe Token: SeIncBasePriorityPrivilege 3092 wmic.exe Token: SeCreatePagefilePrivilege 3092 wmic.exe Token: SeBackupPrivilege 3092 wmic.exe Token: SeRestorePrivilege 3092 wmic.exe Token: SeShutdownPrivilege 3092 wmic.exe Token: SeDebugPrivilege 3092 wmic.exe Token: SeSystemEnvironmentPrivilege 3092 wmic.exe Token: SeRemoteShutdownPrivilege 3092 wmic.exe Token: SeUndockPrivilege 3092 wmic.exe Token: SeManageVolumePrivilege 3092 wmic.exe Token: 33 3092 wmic.exe Token: 34 3092 wmic.exe Token: 35 3092 wmic.exe Token: 36 3092 wmic.exe Token: SeIncreaseQuotaPrivilege 3092 wmic.exe Token: SeSecurityPrivilege 3092 wmic.exe Token: SeTakeOwnershipPrivilege 3092 wmic.exe Token: SeLoadDriverPrivilege 3092 wmic.exe Token: SeSystemProfilePrivilege 3092 wmic.exe Token: SeSystemtimePrivilege 3092 wmic.exe Token: SeProfSingleProcessPrivilege 3092 wmic.exe Token: SeIncBasePriorityPrivilege 3092 wmic.exe Token: SeCreatePagefilePrivilege 3092 wmic.exe Token: SeBackupPrivilege 3092 wmic.exe Token: SeRestorePrivilege 3092 wmic.exe Token: SeShutdownPrivilege 3092 wmic.exe Token: SeDebugPrivilege 3092 wmic.exe Token: SeSystemEnvironmentPrivilege 3092 wmic.exe Token: SeRemoteShutdownPrivilege 3092 wmic.exe Token: SeUndockPrivilege 3092 wmic.exe Token: SeManageVolumePrivilege 3092 wmic.exe Token: 33 3092 wmic.exe Token: 34 3092 wmic.exe Token: 35 3092 wmic.exe Token: 36 3092 wmic.exe Token: 33 2608 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 2608 AUDIODG.EXE -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 3032 wrote to memory of 848 3032 regsvr32.exe 53 PID 3032 wrote to memory of 848 3032 regsvr32.exe 53 PID 3032 wrote to memory of 848 3032 regsvr32.exe 53 PID 848 wrote to memory of 3092 848 regsvr32.exe 63 PID 848 wrote to memory of 3092 848 regsvr32.exe 63
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2.dll1⤵
- Suspicious use of WriteProcessMemory
PID:3032 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2.dll2⤵
- Modifies extensions of user files
- Drops startup file
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:848 -
C:\Windows\system32\wbem\wmic.exe"C:\n\ohlx\bbkw\..\..\..\Windows\shucx\..\system32\eit\u\rtewl\..\..\..\wbem\kekr\..\wmic.exe" shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
PID:3092
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:880
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe 18aeda1e5ac7b91e121ee2f7fb5bb816 usKK10gzFUaaKekVHlVCEA.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
PID:3004
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x50c 0x5081⤵
- Suspicious use of AdjustPrivilegeToken
PID:2608