Analysis
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max time kernel
157s -
max time network
161s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
16-02-2022 22:32
Static task
static1
Behavioral task
behavioral1
Sample
f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe
Resource
win10v2004-en-20220113
General
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Target
f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe
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Size
1.1MB
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MD5
108a298b4ed5b4e77541061f32e55751
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SHA1
6ab4f716180cc48855d65f77d4bdbd3d709a2f19
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SHA256
f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d
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SHA512
ffb83a1042fe51776d0eb6db18bf269d4379963215b9508db8f0a7ad6897dbd86fb392daba542d6de4d85ab00a2a29c0557c7b28bb1d5434750bfbc49c9d0455
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6c2b0cc8d2465f11
https://mazedecrypt.top/6c2b0cc8d2465f11
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 2 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\MergePop.png => C:\Users\Admin\Pictures\MergePop.png.v75QHc f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File renamed C:\Users\Admin\Pictures\UseStep.raw => C:\Users\Admin\Pictures\UseStep.raw.fBqlaMW f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe -
Drops startup file 4 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\DECRYPT-FILES.txt f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\6c2b0cc8d2465f11.tmp f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6c2b0cc8d2465f11.tmp f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.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\\\\111.bmp" f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe -
Drops file in Program Files directory 38 IoCs
description ioc Process File opened for modification C:\Program Files\ConvertFromFind.MOD f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\GrantTest.jpeg f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\CompleteSave.cmd f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\ConvertFromUse.m1v f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\GroupSplit.aiff f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\ResolveInitialize.jpg f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File created C:\Program Files\DECRYPT-FILES.txt f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\BlockCopy.mp3 f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\DisableGet.dxf f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\DisconnectOpen.au f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\ReceiveShow.svg f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\6c2b0cc8d2465f11.tmp f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\AddComplete.rtf f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\AssertEnter.rtf f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\CheckpointExport.nfo f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\ConvertFromCopy.xps f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\ExitNew.jpeg f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\GroupInstall.asf f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\DisableClear.js f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\DisconnectInvoke.ps1 f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\ReceiveWait.m4a f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\UnregisterDebug.vssx f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\WaitClose.ps1xml f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files (x86)\6c2b0cc8d2465f11.tmp f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\ConvertSet.m4a f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\GetPop.ttc f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\GroupApprove.dotx f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\InvokeShow.inf f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\AssertSplit.TTS f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\CompareRemove.lock f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\CompleteSave.pub f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\RequestPing.aif f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\RevokeUse.tif f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\ConvertDismount.ttf f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\DisableReset.ADTS f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\PublishImport.inf f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe File opened for modification C:\Program Files\UnprotectInitialize.csv f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe -
Drops file in Windows directory 8 IoCs
description ioc Process 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 File opened for modification C:\Windows\Logs\CBS\CBS.log TiWorker.exe File opened for modification C:\Windows\WinSxS\pending.xml TiWorker.exe File opened for modification C:\Windows\WindowsUpdate.log svchost.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 820 f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe 820 f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeBackupPrivilege 4600 vssvc.exe Token: SeRestorePrivilege 4600 vssvc.exe Token: SeAuditPrivilege 4600 vssvc.exe Token: SeShutdownPrivilege 2468 svchost.exe Token: SeCreatePagefilePrivilege 2468 svchost.exe Token: SeShutdownPrivilege 2468 svchost.exe Token: SeCreatePagefilePrivilege 2468 svchost.exe Token: SeShutdownPrivilege 2468 svchost.exe Token: SeCreatePagefilePrivilege 2468 svchost.exe Token: SeIncreaseQuotaPrivilege 4264 wmic.exe Token: SeSecurityPrivilege 4264 wmic.exe Token: SeTakeOwnershipPrivilege 4264 wmic.exe Token: SeLoadDriverPrivilege 4264 wmic.exe Token: SeSystemProfilePrivilege 4264 wmic.exe Token: SeSystemtimePrivilege 4264 wmic.exe Token: SeProfSingleProcessPrivilege 4264 wmic.exe Token: SeIncBasePriorityPrivilege 4264 wmic.exe Token: SeCreatePagefilePrivilege 4264 wmic.exe Token: SeBackupPrivilege 4264 wmic.exe Token: SeRestorePrivilege 4264 wmic.exe Token: SeShutdownPrivilege 4264 wmic.exe Token: SeDebugPrivilege 4264 wmic.exe Token: SeSystemEnvironmentPrivilege 4264 wmic.exe Token: SeRemoteShutdownPrivilege 4264 wmic.exe Token: SeUndockPrivilege 4264 wmic.exe Token: SeManageVolumePrivilege 4264 wmic.exe Token: 33 4264 wmic.exe Token: 34 4264 wmic.exe Token: 35 4264 wmic.exe Token: 36 4264 wmic.exe Token: SeIncreaseQuotaPrivilege 4264 wmic.exe Token: SeSecurityPrivilege 4264 wmic.exe Token: SeTakeOwnershipPrivilege 4264 wmic.exe Token: SeLoadDriverPrivilege 4264 wmic.exe Token: SeSystemProfilePrivilege 4264 wmic.exe Token: SeSystemtimePrivilege 4264 wmic.exe Token: SeProfSingleProcessPrivilege 4264 wmic.exe Token: SeIncBasePriorityPrivilege 4264 wmic.exe Token: SeCreatePagefilePrivilege 4264 wmic.exe Token: SeBackupPrivilege 4264 wmic.exe Token: SeRestorePrivilege 4264 wmic.exe Token: SeShutdownPrivilege 4264 wmic.exe Token: SeDebugPrivilege 4264 wmic.exe Token: SeSystemEnvironmentPrivilege 4264 wmic.exe Token: SeRemoteShutdownPrivilege 4264 wmic.exe Token: SeUndockPrivilege 4264 wmic.exe Token: SeManageVolumePrivilege 4264 wmic.exe Token: 33 4264 wmic.exe Token: 34 4264 wmic.exe Token: 35 4264 wmic.exe Token: 36 4264 wmic.exe Token: SeSecurityPrivilege 3260 TiWorker.exe Token: SeRestorePrivilege 3260 TiWorker.exe Token: SeBackupPrivilege 3260 TiWorker.exe Token: 33 4128 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 4128 AUDIODG.EXE Token: SeBackupPrivilege 3260 TiWorker.exe Token: SeRestorePrivilege 3260 TiWorker.exe Token: SeSecurityPrivilege 3260 TiWorker.exe Token: SeBackupPrivilege 3260 TiWorker.exe Token: SeRestorePrivilege 3260 TiWorker.exe Token: SeSecurityPrivilege 3260 TiWorker.exe Token: SeBackupPrivilege 3260 TiWorker.exe Token: SeRestorePrivilege 3260 TiWorker.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 820 wrote to memory of 4264 820 f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe 96 PID 820 wrote to memory of 4264 820 f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.exe"C:\Users\Admin\AppData\Local\Temp\f65722a5c638266b43258c6787eb69ccd8d94e149d68444f8194f448f232da0d.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:820 -
C:\Windows\system32\wbem\wmic.exe"C:\pff\..\Windows\ytn\f\..\..\system32\iilni\..\wbem\ubh\svx\w\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4264
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4600
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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:2468
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C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exeC:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:3260
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x4a4 0x2c81⤵
- Suspicious use of AdjustPrivilegeToken
PID:4128