Analysis
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max time kernel
153s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
11-05-2022 23:17
Static task
static1
Behavioral task
behavioral1
Sample
38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe
Resource
win7-20220414-en
General
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Target
38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe
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Size
3.7MB
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MD5
e14c0622af40260fec213c4100605bfb
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SHA1
2cc388e5e5ccb150604e3e5c0a715a8974a274c7
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SHA256
38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6
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SHA512
e0ae9b2f70b6460672079b907cd30fc228b2245b60315561651a09de1516424aeb770383b5cd7468926c5cfb221f130787d536d87b0941fe09cdb47af40a2d05
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/885e098f6d421a7f
https://mazedecrypt.top/885e098f6d421a7f
Signatures
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Maze
Ransomware family also known as ChaCha.
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suricata: ET MALWARE Maze/ID Ransomware Activity
suricata: ET MALWARE Maze/ID Ransomware Activity
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
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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\SyncRead.raw => C:\Users\Admin\Pictures\SyncRead.raw.tJmpTFv 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File renamed C:\Users\Admin\Pictures\ExpandUnpublish.tif => C:\Users\Admin\Pictures\ExpandUnpublish.tif.sUIDf 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File renamed C:\Users\Admin\Pictures\NewConnect.png => C:\Users\Admin\Pictures\NewConnect.png.wvDYdW 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File renamed C:\Users\Admin\Pictures\RequestCopy.png => C:\Users\Admin\Pictures\RequestCopy.png.gMzXYo 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.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 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\885e098f6d421a7f.tmp 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe -
Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Wine 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.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-1-5-21-790309383-526510583-3802439154-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\000.bmp" 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 2024 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe -
Drops file in Program Files directory 42 IoCs
description ioc Process File opened for modification C:\Program Files\MountExpand.vstx 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\ReceiveHide.svg 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\RegisterExpand.001 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\RevokeConvertFrom.dib 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\SetExpand.odt 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\885e098f6d421a7f.tmp 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\885e098f6d421a7f.tmp 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\ConvertFromMove.001 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\RestartOpen.vsdm 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\RevokeInvoke.dib 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\SaveSend.xlt 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files (x86)\885e098f6d421a7f.tmp 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\ExportSkip.cab 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\RepairReset.gif 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\DisconnectPop.mpeg3 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\MountUninstall.ex_ 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\RemoveClear.vsd 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\ResolveInitialize.vssm 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\SkipPop.wpl 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\CopySearch.mov 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\DenyRevoke.7z 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\DECRYPT-FILES.txt 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\885e098f6d421a7f.tmp 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\DenyFind.jtx 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\SaveRepair.au3 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\SubmitTest.php 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\UninstallRename.rm 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\HideSwitch.mp3 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\SendWatch.odt 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\FormatSearch.pptx 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\NewResume.wm 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\DECRYPT-FILES.txt 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File created C:\Program Files\DECRYPT-FILES.txt 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\AssertBlock.M2T 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\UsePublish.search-ms 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\DECRYPT-FILES.txt 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\885e098f6d421a7f.tmp 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\ConvertFromRestart.wpl 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\StepSelect.cfg 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\CompletePush.txt 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe File opened for modification C:\Program Files\JoinImport.wav 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2024 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe 2024 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
description pid Process Token: SeBackupPrivilege 548 vssvc.exe Token: SeRestorePrivilege 548 vssvc.exe Token: SeAuditPrivilege 548 vssvc.exe Token: SeIncreaseQuotaPrivilege 1504 wmic.exe Token: SeSecurityPrivilege 1504 wmic.exe Token: SeTakeOwnershipPrivilege 1504 wmic.exe Token: SeLoadDriverPrivilege 1504 wmic.exe Token: SeSystemProfilePrivilege 1504 wmic.exe Token: SeSystemtimePrivilege 1504 wmic.exe Token: SeProfSingleProcessPrivilege 1504 wmic.exe Token: SeIncBasePriorityPrivilege 1504 wmic.exe Token: SeCreatePagefilePrivilege 1504 wmic.exe Token: SeBackupPrivilege 1504 wmic.exe Token: SeRestorePrivilege 1504 wmic.exe Token: SeShutdownPrivilege 1504 wmic.exe Token: SeDebugPrivilege 1504 wmic.exe Token: SeSystemEnvironmentPrivilege 1504 wmic.exe Token: SeRemoteShutdownPrivilege 1504 wmic.exe Token: SeUndockPrivilege 1504 wmic.exe Token: SeManageVolumePrivilege 1504 wmic.exe Token: 33 1504 wmic.exe Token: 34 1504 wmic.exe Token: 35 1504 wmic.exe Token: SeIncreaseQuotaPrivilege 1504 wmic.exe Token: SeSecurityPrivilege 1504 wmic.exe Token: SeTakeOwnershipPrivilege 1504 wmic.exe Token: SeLoadDriverPrivilege 1504 wmic.exe Token: SeSystemProfilePrivilege 1504 wmic.exe Token: SeSystemtimePrivilege 1504 wmic.exe Token: SeProfSingleProcessPrivilege 1504 wmic.exe Token: SeIncBasePriorityPrivilege 1504 wmic.exe Token: SeCreatePagefilePrivilege 1504 wmic.exe Token: SeBackupPrivilege 1504 wmic.exe Token: SeRestorePrivilege 1504 wmic.exe Token: SeShutdownPrivilege 1504 wmic.exe Token: SeDebugPrivilege 1504 wmic.exe Token: SeSystemEnvironmentPrivilege 1504 wmic.exe Token: SeRemoteShutdownPrivilege 1504 wmic.exe Token: SeUndockPrivilege 1504 wmic.exe Token: SeManageVolumePrivilege 1504 wmic.exe Token: 33 1504 wmic.exe Token: 34 1504 wmic.exe Token: 35 1504 wmic.exe Token: 33 668 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 668 AUDIODG.EXE Token: 33 668 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 668 AUDIODG.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2024 wrote to memory of 1504 2024 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe 33 PID 2024 wrote to memory of 1504 2024 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe 33 PID 2024 wrote to memory of 1504 2024 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe 33 PID 2024 wrote to memory of 1504 2024 38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe 33
Processes
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C:\Users\Admin\AppData\Local\Temp\38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe"C:\Users\Admin\AppData\Local\Temp\38cc87cc48cdb89a2ab1ffaa0897c10ba4a26ff645f16d9cd5a8bc8debf255c6.exe"1⤵
- Modifies extensions of user files
- Checks BIOS information in registry
- Drops startup file
- Identifies Wine through registry keys
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Windows\system32\wbem\wmic.exe"C:\aohht\..\Windows\f\chr\hvwh\..\..\..\system32\cjofx\qtfuf\ndm\..\..\..\wbem\ek\r\mo\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1504
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:548
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:1584
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x5681⤵
- Suspicious use of AdjustPrivilegeToken
PID:668