Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
18-04-2023 07:41
Static task
static1
Behavioral task
behavioral1
Sample
4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe
Resource
win10v2004-20230220-en
General
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Target
4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe
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Size
898KB
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MD5
61b32a82577a7ea823ff7303ab6b4283
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SHA1
9107c719795fa5768498abb4fed11d907e44d55e
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SHA256
4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167
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SHA512
86ac9d3d0804f5dd3ebe08ab59058363bceeaa3f42d2d482f97ce688837b3b81693fde2b973250b93ee3223318b0f8e4f2faf6b0f91017807feacabce979d700
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SSDEEP
12288:20lnPLRBrenjExzDKNg6dNoQl+vtMyOo/mSVTWa5QLeuXwuxbvRr/LpiRPMBp:201PLX0GferoQOMyySVa/VFbvhtiRPo
Malware Config
Extracted
C:\MSOCache\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6b6d0ca26acccfb0
https://mazedecrypt.top/6b6d0ca26acccfb0
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\ConvertToAssert.png => C:\Users\Admin\Pictures\ConvertToAssert.png.FScU 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File renamed C:\Users\Admin\Pictures\OpenGrant.crw => C:\Users\Admin\Pictures\OpenGrant.crw.MteC 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe -
Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6b6d0ca26acccfb0.tmp 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.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-1-5-21-1563773381-2037468142-1146002597-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\000.bmp" 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe -
Drops file in Program Files directory 46 IoCs
description ioc Process File opened for modification C:\Program Files\FormatWatch.temp 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\ShowWait.clr 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\SkipUnprotect.potx 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\SplitDisable.pdf 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\SplitProtect.cr2 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\DECRYPT-FILES.txt 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\6b6d0ca26acccfb0.tmp 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\DenyImport.odt 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\GetPop.js 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\OpenEnable.wm 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\ProtectUninstall.M2TS 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\SelectEdit.mpe 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\6b6d0ca26acccfb0.tmp 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\6b6d0ca26acccfb0.tmp 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\PingShow.mht 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\BackupAssert.wpl 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\ConfirmJoin.clr 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\FormatClose.xla 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\ProtectCopy.ico 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\SaveRemove.txt 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File created C:\Program Files\DECRYPT-FILES.txt 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\EnterSet.aifc 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\RemoveSkip.ogg 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\SelectLock.clr 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\ConvertWrite.M2V 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\FormatEdit.tiff 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\MoveWrite.MOD 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\PingUnblock.mp3 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\PushReset.emz 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\RepairHide.wax 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\DECRYPT-FILES.txt 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\DisableConvert.mhtml 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\DebugMove.vsd 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\DisconnectCopy.htm 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\DismountUnpublish.csv 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\InitializeEdit.mpeg3 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\PushInitialize.xsl 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\6b6d0ca26acccfb0.tmp 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\AssertFormat.ex_ 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\PushTrace.pptm 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\ResumeUse.potx 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\UndoCompare.odt 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files (x86)\6b6d0ca26acccfb0.tmp 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\DECRYPT-FILES.txt 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe File opened for modification C:\Program Files\ConvertFromStep.pot 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1920 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
description pid Process Token: SeBackupPrivilege 868 vssvc.exe Token: SeRestorePrivilege 868 vssvc.exe Token: SeAuditPrivilege 868 vssvc.exe Token: SeIncreaseQuotaPrivilege 1936 wmic.exe Token: SeSecurityPrivilege 1936 wmic.exe Token: SeTakeOwnershipPrivilege 1936 wmic.exe Token: SeLoadDriverPrivilege 1936 wmic.exe Token: SeSystemProfilePrivilege 1936 wmic.exe Token: SeSystemtimePrivilege 1936 wmic.exe Token: SeProfSingleProcessPrivilege 1936 wmic.exe Token: SeIncBasePriorityPrivilege 1936 wmic.exe Token: SeCreatePagefilePrivilege 1936 wmic.exe Token: SeBackupPrivilege 1936 wmic.exe Token: SeRestorePrivilege 1936 wmic.exe Token: SeShutdownPrivilege 1936 wmic.exe Token: SeDebugPrivilege 1936 wmic.exe Token: SeSystemEnvironmentPrivilege 1936 wmic.exe Token: SeRemoteShutdownPrivilege 1936 wmic.exe Token: SeUndockPrivilege 1936 wmic.exe Token: SeManageVolumePrivilege 1936 wmic.exe Token: 33 1936 wmic.exe Token: 34 1936 wmic.exe Token: 35 1936 wmic.exe Token: SeIncreaseQuotaPrivilege 1936 wmic.exe Token: SeSecurityPrivilege 1936 wmic.exe Token: SeTakeOwnershipPrivilege 1936 wmic.exe Token: SeLoadDriverPrivilege 1936 wmic.exe Token: SeSystemProfilePrivilege 1936 wmic.exe Token: SeSystemtimePrivilege 1936 wmic.exe Token: SeProfSingleProcessPrivilege 1936 wmic.exe Token: SeIncBasePriorityPrivilege 1936 wmic.exe Token: SeCreatePagefilePrivilege 1936 wmic.exe Token: SeBackupPrivilege 1936 wmic.exe Token: SeRestorePrivilege 1936 wmic.exe Token: SeShutdownPrivilege 1936 wmic.exe Token: SeDebugPrivilege 1936 wmic.exe Token: SeSystemEnvironmentPrivilege 1936 wmic.exe Token: SeRemoteShutdownPrivilege 1936 wmic.exe Token: SeUndockPrivilege 1936 wmic.exe Token: SeManageVolumePrivilege 1936 wmic.exe Token: 33 1936 wmic.exe Token: 34 1936 wmic.exe Token: 35 1936 wmic.exe Token: 33 952 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 952 AUDIODG.EXE Token: 33 952 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 952 AUDIODG.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1920 wrote to memory of 1936 1920 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe 31 PID 1920 wrote to memory of 1936 1920 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe 31 PID 1920 wrote to memory of 1936 1920 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe 31 PID 1920 wrote to memory of 1936 1920 4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe 31 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.exe"C:\Users\Admin\AppData\Local\Temp\4263eacd358d5ef9efacff1f63ff79487639136c0268938755a4bfe3f5797167.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:1920 -
C:\Windows\system32\wbem\wmic.exe"C:\vh\..\Windows\jjxs\cch\..\..\system32\fuijv\..\wbem\mxxiu\g\b\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1936
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:868
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:1948
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x52c1⤵
- Suspicious use of AdjustPrivilegeToken
PID:952
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
10KB
MD535f688f865d5a34b8e4444bbf6e7ad92
SHA15c40e5737fb1a038d72cdca1bf42b6c05d663e27
SHA256990d839eeaae6173b85b0ba2d637e6e7a775a8f471c2733632b81f4888f62dbe
SHA512cba39f91d88d793f50e5cd576f2d9f1d2c0e9c203ed88b55078d4e9ad1c0830332748049aec7c75592a82d24dfab267e04490379758c592c5125c15a49dbc8a5
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C:\Users\Admin\AppData\Roaming\Microsoft\Speech\Files\UserLexicons\SP_101AA4744BB248A9B5A923AD21B1BE56.dat
Filesize940B
MD5c73b4f4c1e5b532718c5de9aa69f3167
SHA19176238645716870b98c12110a30a546b93ce672
SHA2561123c3c9fdd1fb43152194fcc8cf7a5c9a970fddbb41d75b236446ece8d3bc4e
SHA51296224af520e1055cc8c5c20d53df1c40887de4d60714246a77e6a198c9d0a834b284e7e93d20dc828cdc886250ec61ddb5b5cbd0827da984963964062f87a9b5