Analysis
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max time kernel
160s -
max time network
139s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
16-02-2022 23:11
Static task
static1
Behavioral task
behavioral1
Sample
0f4bd47212a084ed6f4c50adf86dae36a025ffc4dc90a827799f4c49d53de0fe.dll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
0f4bd47212a084ed6f4c50adf86dae36a025ffc4dc90a827799f4c49d53de0fe.dll
Resource
win10v2004-en-20220113
General
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Target
0f4bd47212a084ed6f4c50adf86dae36a025ffc4dc90a827799f4c49d53de0fe.dll
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Size
593KB
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MD5
f5816c4519f8c36983d8836314a1c8ce
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SHA1
1e7e30fb999e000a9495137ff4222ffd95d04c95
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SHA256
0f4bd47212a084ed6f4c50adf86dae36a025ffc4dc90a827799f4c49d53de0fe
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SHA512
70072c6f2fd953d5c00bdad1de49928bf6db510b5354547735a079628ca82150cadc8ece62e453f80786d7930f69fcc4adfb9dbc10cfa5653d455c90557d0898
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6d570cc8ed197b4a
https://mazedecrypt.top/6d570cc8ed197b4a
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 10 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\UpdateGet.tiff => C:\Users\Admin\Pictures\UpdateGet.tiff.2Dnt32X regsvr32.exe File renamed C:\Users\Admin\Pictures\ExpandGet.png => C:\Users\Admin\Pictures\ExpandGet.png.TEUIy regsvr32.exe File renamed C:\Users\Admin\Pictures\MountGrant.raw => C:\Users\Admin\Pictures\MountGrant.raw.xzSQAs regsvr32.exe File opened for modification C:\Users\Admin\Pictures\ShowGrant.tiff regsvr32.exe File opened for modification C:\Users\Admin\Pictures\StopSet.tiff regsvr32.exe File opened for modification C:\Users\Admin\Pictures\UpdateGet.tiff regsvr32.exe File renamed C:\Users\Admin\Pictures\PushUnregister.raw => C:\Users\Admin\Pictures\PushUnregister.raw.xzSQAs regsvr32.exe File renamed C:\Users\Admin\Pictures\ShowGrant.tiff => C:\Users\Admin\Pictures\ShowGrant.tiff.wVlH53 regsvr32.exe File renamed C:\Users\Admin\Pictures\StopSet.tiff => C:\Users\Admin\Pictures\StopSet.tiff.wVlH53 regsvr32.exe File renamed C:\Users\Admin\Pictures\UnblockExit.tif => C:\Users\Admin\Pictures\UnblockExit.tif.wVlH53 regsvr32.exe -
Drops startup file 2 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\6d570cc8ed197b4a.tmp regsvr32.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\111.bmp" regsvr32.exe -
Drops file in Program Files directory 47 IoCs
description ioc Process File opened for modification C:\Program Files\ConvertEdit.jfif regsvr32.exe File opened for modification C:\Program Files\NewBlock.xml regsvr32.exe File opened for modification C:\Program Files (x86)\6d570cc8ed197b4a.tmp regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\6d570cc8ed197b4a.tmp regsvr32.exe File opened for modification C:\Program Files\CheckpointSubmit.docx regsvr32.exe File opened for modification C:\Program Files\EditSwitch.ttf regsvr32.exe File opened for modification C:\Program Files\StartDisconnect.7z regsvr32.exe File opened for modification C:\Program Files\WatchDeny.cmd regsvr32.exe File opened for modification C:\Program Files\InstallShow.htm regsvr32.exe File opened for modification C:\Program Files\RemoveInitialize.ppt regsvr32.exe File opened for modification C:\Program Files\RequestPublish.gif regsvr32.exe File opened for modification C:\Program Files\RevokeDebug.rtf regsvr32.exe File opened for modification C:\Program Files\UnlockBlock.easmx regsvr32.exe File opened for modification C:\Program Files\UnlockClear.wps regsvr32.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\ClosePush.M2TS regsvr32.exe File opened for modification C:\Program Files\FormatExpand.xps regsvr32.exe File opened for modification C:\Program Files\InvokeUpdate.dotx regsvr32.exe File opened for modification C:\Program Files\ResetRevoke.asf regsvr32.exe File opened for modification C:\Program Files\ResolveRequest.ods regsvr32.exe File opened for modification C:\Program Files\SubmitTest.mpg regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\6d570cc8ed197b4a.tmp regsvr32.exe File opened for modification C:\Program Files\PopOut.vssm regsvr32.exe File opened for modification C:\Program Files\RestoreWait.cab regsvr32.exe File created C:\Program Files\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\6d570cc8ed197b4a.tmp regsvr32.exe File opened for modification C:\Program Files\CompareStep.ps1 regsvr32.exe File opened for modification C:\Program Files\CompleteCheckpoint.pptm regsvr32.exe File opened for modification C:\Program Files\ConvertToSync.pptm regsvr32.exe File opened for modification C:\Program Files\DisconnectRemove.xsl regsvr32.exe File opened for modification C:\Program Files\StepRestore.odt regsvr32.exe File opened for modification C:\Program Files\AddInitialize.mpeg3 regsvr32.exe File opened for modification C:\Program Files\ImportGet.ps1 regsvr32.exe File opened for modification C:\Program Files\RedoSplit.TTS regsvr32.exe File opened for modification C:\Program Files\ResetDebug.ex_ regsvr32.exe File opened for modification C:\Program Files\ResetUninstall.ttc regsvr32.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\CopyConfirm.mov regsvr32.exe File opened for modification C:\Program Files\PingPush.svgz regsvr32.exe File opened for modification C:\Program Files\UnprotectExit.reg regsvr32.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\DECRYPT-FILES.txt regsvr32.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\ConvertToNew.TS regsvr32.exe File opened for modification C:\Program Files\GetEnable.mpp regsvr32.exe File opened for modification C:\Program Files\GroupResume.js regsvr32.exe File opened for modification C:\Program Files\MountNew.mpg regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\6d570cc8ed197b4a.tmp regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1512 regsvr32.exe -
Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeBackupPrivilege 1408 vssvc.exe Token: SeRestorePrivilege 1408 vssvc.exe Token: SeAuditPrivilege 1408 vssvc.exe Token: SeIncreaseQuotaPrivilege 2032 wmic.exe Token: SeSecurityPrivilege 2032 wmic.exe Token: SeTakeOwnershipPrivilege 2032 wmic.exe Token: SeLoadDriverPrivilege 2032 wmic.exe Token: SeSystemProfilePrivilege 2032 wmic.exe Token: SeSystemtimePrivilege 2032 wmic.exe Token: SeProfSingleProcessPrivilege 2032 wmic.exe Token: SeIncBasePriorityPrivilege 2032 wmic.exe Token: SeCreatePagefilePrivilege 2032 wmic.exe Token: SeBackupPrivilege 2032 wmic.exe Token: SeRestorePrivilege 2032 wmic.exe Token: SeShutdownPrivilege 2032 wmic.exe Token: SeDebugPrivilege 2032 wmic.exe Token: SeSystemEnvironmentPrivilege 2032 wmic.exe Token: SeRemoteShutdownPrivilege 2032 wmic.exe Token: SeUndockPrivilege 2032 wmic.exe Token: SeManageVolumePrivilege 2032 wmic.exe Token: 33 2032 wmic.exe Token: 34 2032 wmic.exe Token: 35 2032 wmic.exe Token: SeIncreaseQuotaPrivilege 2032 wmic.exe Token: SeSecurityPrivilege 2032 wmic.exe Token: SeTakeOwnershipPrivilege 2032 wmic.exe Token: SeLoadDriverPrivilege 2032 wmic.exe Token: SeSystemProfilePrivilege 2032 wmic.exe Token: SeSystemtimePrivilege 2032 wmic.exe Token: SeProfSingleProcessPrivilege 2032 wmic.exe Token: SeIncBasePriorityPrivilege 2032 wmic.exe Token: SeCreatePagefilePrivilege 2032 wmic.exe Token: SeBackupPrivilege 2032 wmic.exe Token: SeRestorePrivilege 2032 wmic.exe Token: SeShutdownPrivilege 2032 wmic.exe Token: SeDebugPrivilege 2032 wmic.exe Token: SeSystemEnvironmentPrivilege 2032 wmic.exe Token: SeRemoteShutdownPrivilege 2032 wmic.exe Token: SeUndockPrivilege 2032 wmic.exe Token: SeManageVolumePrivilege 2032 wmic.exe Token: 33 2032 wmic.exe Token: 34 2032 wmic.exe Token: 35 2032 wmic.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1720 wrote to memory of 1512 1720 regsvr32.exe 27 PID 1720 wrote to memory of 1512 1720 regsvr32.exe 27 PID 1720 wrote to memory of 1512 1720 regsvr32.exe 27 PID 1720 wrote to memory of 1512 1720 regsvr32.exe 27 PID 1720 wrote to memory of 1512 1720 regsvr32.exe 27 PID 1720 wrote to memory of 1512 1720 regsvr32.exe 27 PID 1720 wrote to memory of 1512 1720 regsvr32.exe 27 PID 1512 wrote to memory of 2032 1512 regsvr32.exe 34 PID 1512 wrote to memory of 2032 1512 regsvr32.exe 34 PID 1512 wrote to memory of 2032 1512 regsvr32.exe 34 PID 1512 wrote to memory of 2032 1512 regsvr32.exe 34
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\0f4bd47212a084ed6f4c50adf86dae36a025ffc4dc90a827799f4c49d53de0fe.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1720 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\0f4bd47212a084ed6f4c50adf86dae36a025ffc4dc90a827799f4c49d53de0fe.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:1512 -
C:\Windows\system32\wbem\wmic.exe"C:\m\cjiue\..\..\Windows\wu\ll\g\..\..\..\system32\p\gy\aixp\..\..\..\wbem\x\c\x\..\..\..\wmic.exe" shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2032
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1408
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:1740