Analysis
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max time kernel
161s -
max time network
175s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
16-02-2022 22:54
Static task
static1
Behavioral task
behavioral1
Sample
6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe
Resource
win10v2004-en-20220112
General
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Target
6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe
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Size
584KB
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MD5
18da75444ee5033c3e92ea044f0c42f3
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SHA1
ed96c83bea00ba35a28f073317d84b68a296d789
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SHA256
6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43
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SHA512
aa342c60cfbfcd551c235a5bfc1dd85d7ffbee3edc38c7cc1668b27bf17c2e18c2e7219db79b5cc1b7fc3a940b2dd13c5c828387ea49093dd748f31922c4c825
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6d570cc826f08068
https://mazedecrypt.top/6d570cc826f08068
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 7 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\ExportSearch.tiff => C:\Users\Admin\Pictures\ExportSearch.tiff.p25RN 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Users\Admin\Pictures\InstallUnregister.tiff 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File renamed C:\Users\Admin\Pictures\InstallUnregister.tiff => C:\Users\Admin\Pictures\InstallUnregister.tiff.czSLi 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File renamed C:\Users\Admin\Pictures\SelectSearch.tif => C:\Users\Admin\Pictures\SelectSearch.tif.nFnvQ3S 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File renamed C:\Users\Admin\Pictures\WaitExit.raw => C:\Users\Admin\Pictures\WaitExit.raw.gRRh 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File renamed C:\Users\Admin\Pictures\ExitTrace.png => C:\Users\Admin\Pictures\ExitTrace.png.p25RN 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Users\Admin\Pictures\ExportSearch.tiff 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.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 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6d570cc826f08068.tmp 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.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-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\000.bmp" 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe -
Drops file in Program Files directory 36 IoCs
description ioc Process File opened for modification C:\Program Files\ProtectGroup.zip 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\UndoPublish.cr2 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\UninstallUndo.xhtml 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\UnprotectFormat.svg 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files (x86)\6d570cc826f08068.tmp 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File created C:\Program Files\DECRYPT-FILES.txt 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\DisableLimit.wps 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\FindUndo.clr 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\6d570cc826f08068.tmp 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\EditPing.avi 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\DECRYPT-FILES.txt 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\DECRYPT-FILES.txt 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\SearchCompress.docm 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\TraceGrant.scf 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\DenyCompress.gif 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\MeasureAdd.vbs 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\OutImport.doc 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\RequestPublish.html 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\6d570cc826f08068.tmp 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\6d570cc826f08068.tmp 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\ExportApprove.php 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\OutConvertTo.rmi 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\ReadCompress.jpeg 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\StartCopy.gif 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\UnregisterSelect.pps 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\DECRYPT-FILES.txt 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\CloseTrace.mid 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\JoinOpen.ppt 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\NewStart.ppsm 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\MoveSave.001 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\SearchSkip.odt 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\6d570cc826f08068.tmp 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\CheckpointLimit.avi 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\CompleteUnblock.png 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\InstallUnblock.mp3 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1588 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe -
Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeBackupPrivilege 760 vssvc.exe Token: SeRestorePrivilege 760 vssvc.exe Token: SeAuditPrivilege 760 vssvc.exe Token: SeIncreaseQuotaPrivilege 1052 wmic.exe Token: SeSecurityPrivilege 1052 wmic.exe Token: SeTakeOwnershipPrivilege 1052 wmic.exe Token: SeLoadDriverPrivilege 1052 wmic.exe Token: SeSystemProfilePrivilege 1052 wmic.exe Token: SeSystemtimePrivilege 1052 wmic.exe Token: SeProfSingleProcessPrivilege 1052 wmic.exe Token: SeIncBasePriorityPrivilege 1052 wmic.exe Token: SeCreatePagefilePrivilege 1052 wmic.exe Token: SeBackupPrivilege 1052 wmic.exe Token: SeRestorePrivilege 1052 wmic.exe Token: SeShutdownPrivilege 1052 wmic.exe Token: SeDebugPrivilege 1052 wmic.exe Token: SeSystemEnvironmentPrivilege 1052 wmic.exe Token: SeRemoteShutdownPrivilege 1052 wmic.exe Token: SeUndockPrivilege 1052 wmic.exe Token: SeManageVolumePrivilege 1052 wmic.exe Token: 33 1052 wmic.exe Token: 34 1052 wmic.exe Token: 35 1052 wmic.exe Token: SeIncreaseQuotaPrivilege 1052 wmic.exe Token: SeSecurityPrivilege 1052 wmic.exe Token: SeTakeOwnershipPrivilege 1052 wmic.exe Token: SeLoadDriverPrivilege 1052 wmic.exe Token: SeSystemProfilePrivilege 1052 wmic.exe Token: SeSystemtimePrivilege 1052 wmic.exe Token: SeProfSingleProcessPrivilege 1052 wmic.exe Token: SeIncBasePriorityPrivilege 1052 wmic.exe Token: SeCreatePagefilePrivilege 1052 wmic.exe Token: SeBackupPrivilege 1052 wmic.exe Token: SeRestorePrivilege 1052 wmic.exe Token: SeShutdownPrivilege 1052 wmic.exe Token: SeDebugPrivilege 1052 wmic.exe Token: SeSystemEnvironmentPrivilege 1052 wmic.exe Token: SeRemoteShutdownPrivilege 1052 wmic.exe Token: SeUndockPrivilege 1052 wmic.exe Token: SeManageVolumePrivilege 1052 wmic.exe Token: 33 1052 wmic.exe Token: 34 1052 wmic.exe Token: 35 1052 wmic.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1588 wrote to memory of 1052 1588 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe 35 PID 1588 wrote to memory of 1052 1588 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe 35 PID 1588 wrote to memory of 1052 1588 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe 35 PID 1588 wrote to memory of 1052 1588 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe"C:\Users\Admin\AppData\Local\Temp\6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.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:1588 -
C:\Windows\system32\wbem\wmic.exe"C:\q\n\omvfv\..\..\..\Windows\kob\ruak\wmaic\..\..\..\system32\qlqjo\hylkd\sfqek\..\..\..\wbem\rjrb\q\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1052
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:760
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:972