Analysis
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max time kernel
161s -
max time network
117s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
01-02-2022 09:07
Static task
static1
Behavioral task
behavioral1
Sample
d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2.dll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2.dll
Resource
win10v2004-en-20220112
General
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Target
d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2.dll
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Size
458KB
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MD5
6099bbf0f6f85495929ddfc9b66d6992
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SHA1
07849ba4d2d9cb2d13d40ceaf37965159a53c852
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SHA256
d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2
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SHA512
3fd071ce5bc7cbfa3090ee260d57c7e98ae16f686396edb29d49cb254cbfb853adfd955e68bd98d4302b23e671c272b8ec76eaac8fae93c54224e6988a760378
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6d570cc841c57b83
https://mazedecrypt.top/6d570cc841c57b83
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\FormatProtect.tif => C:\Users\Admin\Pictures\FormatProtect.tif.6hC5ceP regsvr32.exe File renamed C:\Users\Admin\Pictures\FormatSplit.crw => C:\Users\Admin\Pictures\FormatSplit.crw.6hC5ceP regsvr32.exe File renamed C:\Users\Admin\Pictures\SwitchConvert.raw => C:\Users\Admin\Pictures\SwitchConvert.raw.og9pGZG regsvr32.exe File renamed C:\Users\Admin\Pictures\UnpublishReset.raw => C:\Users\Admin\Pictures\UnpublishReset.raw.9yrO regsvr32.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 regsvr32.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6d570cc841c57b83.tmp regsvr32.exe -
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\\\\111.bmp" regsvr32.exe -
Drops file in Program Files directory 40 IoCs
description ioc Process File opened for modification C:\Program Files\BackupSubmit.html regsvr32.exe File opened for modification C:\Program Files\ProtectLimit.sql regsvr32.exe File opened for modification C:\Program Files\ResumeDisconnect.ttc regsvr32.exe File opened for modification C:\Program Files\SetSwitch.clr regsvr32.exe File opened for modification C:\Program Files (x86)\6d570cc841c57b83.tmp regsvr32.exe File opened for modification C:\Program Files\FormatSync.mpv2 regsvr32.exe File opened for modification C:\Program Files\WaitReceive.pps regsvr32.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt regsvr32.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\DECRYPT-FILES.txt regsvr32.exe File created C:\Program Files\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\ExitUse.vsdx regsvr32.exe File opened for modification C:\Program Files\ExportCopy.asf regsvr32.exe File opened for modification C:\Program Files\RevokeExport.vdw regsvr32.exe File opened for modification C:\Program Files\SendMount.vssx regsvr32.exe File opened for modification C:\Program Files\TraceDisconnect.dib regsvr32.exe File opened for modification C:\Program Files\ExitWait.wm regsvr32.exe File opened for modification C:\Program Files\PublishInvoke.edrwx regsvr32.exe File opened for modification C:\Program Files\UpdateRevoke.png regsvr32.exe File opened for modification C:\Program Files\WaitNew.mpp regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\6d570cc841c57b83.tmp regsvr32.exe File opened for modification C:\Program Files\LockCompress.html regsvr32.exe File opened for modification C:\Program Files\PingConnect.3gpp regsvr32.exe File opened for modification C:\Program Files\SetSend.ps1 regsvr32.exe File opened for modification C:\Program Files\UnlockSync.jpeg regsvr32.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\6d570cc841c57b83.tmp regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\6d570cc841c57b83.tmp regsvr32.exe File opened for modification C:\Program Files\AssertApprove.pps regsvr32.exe File opened for modification C:\Program Files\MountRepair.wmf regsvr32.exe File opened for modification C:\Program Files\MoveLimit.php regsvr32.exe File opened for modification C:\Program Files\SplitRename.m4v regsvr32.exe File opened for modification C:\Program Files\SplitUndo.MTS regsvr32.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\WriteRequest.cfg regsvr32.exe File opened for modification C:\Program Files\6d570cc841c57b83.tmp regsvr32.exe File opened for modification C:\Program Files\DisconnectRename.jtx regsvr32.exe File opened for modification C:\Program Files\DismountConnect.dib regsvr32.exe File opened for modification C:\Program Files\EditNew.tif regsvr32.exe File opened for modification C:\Program Files\MergeGroup.3gp regsvr32.exe File opened for modification C:\Program Files\SubmitWatch.mpeg3 regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1884 regsvr32.exe -
Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeBackupPrivilege 1388 vssvc.exe Token: SeRestorePrivilege 1388 vssvc.exe Token: SeAuditPrivilege 1388 vssvc.exe Token: SeIncreaseQuotaPrivilege 1464 wmic.exe Token: SeSecurityPrivilege 1464 wmic.exe Token: SeTakeOwnershipPrivilege 1464 wmic.exe Token: SeLoadDriverPrivilege 1464 wmic.exe Token: SeSystemProfilePrivilege 1464 wmic.exe Token: SeSystemtimePrivilege 1464 wmic.exe Token: SeProfSingleProcessPrivilege 1464 wmic.exe Token: SeIncBasePriorityPrivilege 1464 wmic.exe Token: SeCreatePagefilePrivilege 1464 wmic.exe Token: SeBackupPrivilege 1464 wmic.exe Token: SeRestorePrivilege 1464 wmic.exe Token: SeShutdownPrivilege 1464 wmic.exe Token: SeDebugPrivilege 1464 wmic.exe Token: SeSystemEnvironmentPrivilege 1464 wmic.exe Token: SeRemoteShutdownPrivilege 1464 wmic.exe Token: SeUndockPrivilege 1464 wmic.exe Token: SeManageVolumePrivilege 1464 wmic.exe Token: 33 1464 wmic.exe Token: 34 1464 wmic.exe Token: 35 1464 wmic.exe Token: SeIncreaseQuotaPrivilege 1464 wmic.exe Token: SeSecurityPrivilege 1464 wmic.exe Token: SeTakeOwnershipPrivilege 1464 wmic.exe Token: SeLoadDriverPrivilege 1464 wmic.exe Token: SeSystemProfilePrivilege 1464 wmic.exe Token: SeSystemtimePrivilege 1464 wmic.exe Token: SeProfSingleProcessPrivilege 1464 wmic.exe Token: SeIncBasePriorityPrivilege 1464 wmic.exe Token: SeCreatePagefilePrivilege 1464 wmic.exe Token: SeBackupPrivilege 1464 wmic.exe Token: SeRestorePrivilege 1464 wmic.exe Token: SeShutdownPrivilege 1464 wmic.exe Token: SeDebugPrivilege 1464 wmic.exe Token: SeSystemEnvironmentPrivilege 1464 wmic.exe Token: SeRemoteShutdownPrivilege 1464 wmic.exe Token: SeUndockPrivilege 1464 wmic.exe Token: SeManageVolumePrivilege 1464 wmic.exe Token: 33 1464 wmic.exe Token: 34 1464 wmic.exe Token: 35 1464 wmic.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1620 wrote to memory of 1884 1620 regsvr32.exe 27 PID 1620 wrote to memory of 1884 1620 regsvr32.exe 27 PID 1620 wrote to memory of 1884 1620 regsvr32.exe 27 PID 1620 wrote to memory of 1884 1620 regsvr32.exe 27 PID 1620 wrote to memory of 1884 1620 regsvr32.exe 27 PID 1620 wrote to memory of 1884 1620 regsvr32.exe 27 PID 1620 wrote to memory of 1884 1620 regsvr32.exe 27 PID 1884 wrote to memory of 1464 1884 regsvr32.exe 34 PID 1884 wrote to memory of 1464 1884 regsvr32.exe 34 PID 1884 wrote to memory of 1464 1884 regsvr32.exe 34 PID 1884 wrote to memory of 1464 1884 regsvr32.exe 34
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1620 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\d6d98da42bc495153168a6e7fceeebb599f9ed3e3a95ca67c301a66b50f34bd2.dll2⤵
- 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:1884 -
C:\Windows\system32\wbem\wmic.exe"C:\iec\i\..\..\Windows\ehsk\..\system32\xrgh\kwxtt\..\..\wbem\cm\vvrqm\nkw\..\..\..\wmic.exe" shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1464
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1388
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:1596