Analysis
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max time kernel
165s -
max time network
185s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
16-02-2022 22:38
Static task
static1
Behavioral task
behavioral1
Sample
cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe
Resource
win10v2004-en-20220113
General
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Target
cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe
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Size
751KB
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MD5
46b98ee908d08f15137e509e5e69db1b
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SHA1
73fbdd10619757fff0193b84fff54807e56afa58
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SHA256
cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d
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SHA512
62cc5786d870ecf65aadd215efd73eb76455a3aaaa416b0ccd0eca5b4b0d0f39f5376a0228b209516ba9af6ce633646fc827e25f8dfe64a0566975f5eedfddbb
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/8802099c46bb5a79
https://mazedecrypt.top/8802099c46bb5a79
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 4 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\StartWait.raw => C:\Users\Admin\Pictures\StartWait.raw.dwMUp cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Users\Admin\Pictures\CheckpointJoin.tiff cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File renamed C:\Users\Admin\Pictures\CheckpointJoin.tiff => C:\Users\Admin\Pictures\CheckpointJoin.tiff.BP6eY cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File renamed C:\Users\Admin\Pictures\ExportFormat.png => C:\Users\Admin\Pictures\ExportFormat.png.0eDkM cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe -
Drops startup file 4 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8802099c46bb5a79.tmp cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\DECRYPT-FILES.txt cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\8802099c46bb5a79.tmp cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\000.bmp" cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe -
Drops file in Program Files directory 42 IoCs
description ioc Process File opened for modification C:\Program Files\DisableFind.zip cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\RenameClear.rmi cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\ResumePush.eprtx cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\UnprotectGroup.wpl cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\ConvertFromStep.ttc cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\ConvertInstall.asx cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\ConfirmSubmit.wmx cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\CopyMove.jpe cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\JoinUnlock.vsw cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\RevokeSave.dxf cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\StartRemove.mpa cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\AssertOut.lock cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\CompressPush.hta cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\ReceiveReset.asp cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\RestartUnregister.xps cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\RevokeReceive.css cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\8802099c46bb5a79.tmp cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\DisableConnect.jfif cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\ResetRevoke.pdf cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\GrantSet.vsdx cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\GroupOpen.dxf cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\RedoImport.search-ms cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\RevokeComplete.mpv2 cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\ReceivePublish.zip cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\ReceiveRead.xla cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\ExportSend.ps1xml cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\MergeAssert.ogg cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\MergeComplete.dxf cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\OptimizeSave.vsd cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\RepairMount.snd cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\SubmitSuspend.DVR-MS cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File created C:\Program Files\DECRYPT-FILES.txt cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\AssertShow.scf cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\ReadPublish.xht cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\SplitExport.ico cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files (x86)\8802099c46bb5a79.tmp cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\ConnectUnblock.7z cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\InstallConvert.ppsm cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\HideMeasure.rtf cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\DenyUninstall.bat cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe File opened for modification C:\Program Files\DisconnectUpdate.m4a cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe -
Drops file in Windows directory 6 IoCs
description ioc Process 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\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 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4800 cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe 4800 cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe -
Suspicious use of AdjustPrivilegeToken 51 IoCs
description pid Process Token: SeBackupPrivilege 3120 vssvc.exe Token: SeRestorePrivilege 3120 vssvc.exe Token: SeAuditPrivilege 3120 vssvc.exe Token: SeShutdownPrivilege 1632 svchost.exe Token: SeCreatePagefilePrivilege 1632 svchost.exe Token: SeShutdownPrivilege 1632 svchost.exe Token: SeCreatePagefilePrivilege 1632 svchost.exe Token: SeShutdownPrivilege 1632 svchost.exe Token: SeCreatePagefilePrivilege 1632 svchost.exe Token: SeIncreaseQuotaPrivilege 2376 wmic.exe Token: SeSecurityPrivilege 2376 wmic.exe Token: SeTakeOwnershipPrivilege 2376 wmic.exe Token: SeLoadDriverPrivilege 2376 wmic.exe Token: SeSystemProfilePrivilege 2376 wmic.exe Token: SeSystemtimePrivilege 2376 wmic.exe Token: SeProfSingleProcessPrivilege 2376 wmic.exe Token: SeIncBasePriorityPrivilege 2376 wmic.exe Token: SeCreatePagefilePrivilege 2376 wmic.exe Token: SeBackupPrivilege 2376 wmic.exe Token: SeRestorePrivilege 2376 wmic.exe Token: SeShutdownPrivilege 2376 wmic.exe Token: SeDebugPrivilege 2376 wmic.exe Token: SeSystemEnvironmentPrivilege 2376 wmic.exe Token: SeRemoteShutdownPrivilege 2376 wmic.exe Token: SeUndockPrivilege 2376 wmic.exe Token: SeManageVolumePrivilege 2376 wmic.exe Token: 33 2376 wmic.exe Token: 34 2376 wmic.exe Token: 35 2376 wmic.exe Token: 36 2376 wmic.exe Token: SeIncreaseQuotaPrivilege 2376 wmic.exe Token: SeSecurityPrivilege 2376 wmic.exe Token: SeTakeOwnershipPrivilege 2376 wmic.exe Token: SeLoadDriverPrivilege 2376 wmic.exe Token: SeSystemProfilePrivilege 2376 wmic.exe Token: SeSystemtimePrivilege 2376 wmic.exe Token: SeProfSingleProcessPrivilege 2376 wmic.exe Token: SeIncBasePriorityPrivilege 2376 wmic.exe Token: SeCreatePagefilePrivilege 2376 wmic.exe Token: SeBackupPrivilege 2376 wmic.exe Token: SeRestorePrivilege 2376 wmic.exe Token: SeShutdownPrivilege 2376 wmic.exe Token: SeDebugPrivilege 2376 wmic.exe Token: SeSystemEnvironmentPrivilege 2376 wmic.exe Token: SeRemoteShutdownPrivilege 2376 wmic.exe Token: SeUndockPrivilege 2376 wmic.exe Token: SeManageVolumePrivilege 2376 wmic.exe Token: 33 2376 wmic.exe Token: 34 2376 wmic.exe Token: 35 2376 wmic.exe Token: 36 2376 wmic.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4800 wrote to memory of 2376 4800 cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe 99 PID 4800 wrote to memory of 2376 4800 cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe"C:\Users\Admin\AppData\Local\Temp\cdcce11615f46852e81ddd770c55869bbc92befdf38d82024878f2e0520b5a2d.exe"1⤵
- 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:4800 -
C:\Windows\system32\wbem\wmic.exe"C:\iqj\co\fy\..\..\..\Windows\a\h\tvxtj\..\..\..\system32\toyxt\x\..\..\wbem\eiwr\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2376
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3120
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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:1632