Analysis
-
max time kernel
138s -
max time network
149s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
23-12-2020 04:46
Static task
static1
Behavioral task
behavioral1
Sample
1-maze.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
1-maze.exe
Resource
win10v20201028
General
-
Target
1-maze.exe
-
Size
707KB
-
MD5
0f841c6332c89eaa7cac14c9d5b1d35b
-
SHA1
23acd12dd10615c5f0604e842d755a0ee3f4b42e
-
SHA256
806fc33650b7ec35dd01a06be3037674ae3cc0db6ba1e3f690ee9ba9403c0627
-
SHA512
f6c65ca0d9337c6e98b25862262378583f04b665883866c5a3ae3f60e53bada96c027cf0f7406e705e50b4c831c5c6635327518b377850f080284ce1e418ddf8
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/8820099720bd9b39
https://mazedecrypt.top/8820099720bd9b39
Signatures
-
Maze
Ransomware family also known as ChaCha.
-
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Modifies extensions of user files 15 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\RenameUnprotect.raw => C:\Users\Admin\Pictures\RenameUnprotect.raw.8qsJ4Ag 1-maze.exe File renamed C:\Users\Admin\Pictures\CompleteOpen.crw => C:\Users\Admin\Pictures\CompleteOpen.crw.tOkdjK 1-maze.exe File renamed C:\Users\Admin\Pictures\UpdateLimit.tiff => C:\Users\Admin\Pictures\UpdateLimit.tiff.0z9x 1-maze.exe File renamed C:\Users\Admin\Pictures\ReadMeasure.raw => C:\Users\Admin\Pictures\ReadMeasure.raw.8qsJ4Ag 1-maze.exe File opened for modification C:\Users\Admin\Pictures\CheckpointExpand.tiff 1-maze.exe File renamed C:\Users\Admin\Pictures\DisableRequest.tif => C:\Users\Admin\Pictures\DisableRequest.tif.tOkdjK 1-maze.exe File opened for modification C:\Users\Admin\Pictures\EnterUnprotect.tiff 1-maze.exe File renamed C:\Users\Admin\Pictures\EnterUnprotect.tiff => C:\Users\Admin\Pictures\EnterUnprotect.tiff.tOkdjK 1-maze.exe File renamed C:\Users\Admin\Pictures\SuspendApprove.raw => C:\Users\Admin\Pictures\SuspendApprove.raw.Bxky 1-maze.exe File opened for modification C:\Users\Admin\Pictures\AssertImport.tiff 1-maze.exe File renamed C:\Users\Admin\Pictures\CheckpointExpand.tiff => C:\Users\Admin\Pictures\CheckpointExpand.tiff.gLszk 1-maze.exe File renamed C:\Users\Admin\Pictures\HideCompress.raw => C:\Users\Admin\Pictures\HideCompress.raw.Xw9WP4p 1-maze.exe File renamed C:\Users\Admin\Pictures\ResumeRestart.raw => C:\Users\Admin\Pictures\ResumeRestart.raw.Bxky 1-maze.exe File opened for modification C:\Users\Admin\Pictures\UpdateLimit.tiff 1-maze.exe File renamed C:\Users\Admin\Pictures\AssertImport.tiff => C:\Users\Admin\Pictures\AssertImport.tiff.whTt8 1-maze.exe -
Drops startup file 4 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt 1-maze.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8820099720bd9b39.tmp 1-maze.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\DECRYPT-FILES.txt 1-maze.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\8820099720bd9b39.tmp 1-maze.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\000.bmp" 1-maze.exe -
Drops file in Program Files directory 40 IoCs
description ioc Process File opened for modification C:\Program Files\ExpandUnlock.sql 1-maze.exe File opened for modification C:\Program Files\ExportMeasure.pdf 1-maze.exe File opened for modification C:\Program Files\PublishOptimize.mpv2 1-maze.exe File opened for modification C:\Program Files\ReceiveDisable.zip 1-maze.exe File opened for modification C:\Program Files\UnlockPush.bmp 1-maze.exe File opened for modification C:\Program Files\WatchInstall.M2T 1-maze.exe File opened for modification C:\Program Files\CompressRead.ps1 1-maze.exe File opened for modification C:\Program Files\NewMerge.ram 1-maze.exe File opened for modification C:\Program Files\SelectDismount.emf 1-maze.exe File opened for modification C:\Program Files\ExpandResolve.ps1xml 1-maze.exe File opened for modification C:\Program Files\8820099720bd9b39.tmp 1-maze.exe File opened for modification C:\Program Files\RevokeExit.ram 1-maze.exe File opened for modification C:\Program Files\SwitchRead.docm 1-maze.exe File created C:\Program Files\DECRYPT-FILES.txt 1-maze.exe File opened for modification C:\Program Files\SendUpdate.dotx 1-maze.exe File opened for modification C:\Program Files\SkipUndo.dib 1-maze.exe File opened for modification C:\Program Files\RestoreSelect.zip 1-maze.exe File opened for modification C:\Program Files\DismountMerge.emz 1-maze.exe File opened for modification C:\Program Files\EnableRename.ram 1-maze.exe File opened for modification C:\Program Files\MeasureMove.ram 1-maze.exe File opened for modification C:\Program Files\MoveSkip.tiff 1-maze.exe File opened for modification C:\Program Files\NewConvertFrom.vstm 1-maze.exe File opened for modification C:\Program Files\ReceiveComplete.js 1-maze.exe File opened for modification C:\Program Files\SkipSave.MOD 1-maze.exe File opened for modification C:\Program Files\ClearComplete.dotx 1-maze.exe File opened for modification C:\Program Files\TestUnlock.wmx 1-maze.exe File opened for modification C:\Program Files\WaitEnter.vbe 1-maze.exe File opened for modification C:\Program Files\TestUnblock.wps 1-maze.exe File opened for modification C:\Program Files\DenyGrant.xltx 1-maze.exe File opened for modification C:\Program Files\FormatSuspend.wps 1-maze.exe File opened for modification C:\Program Files\NewClose.001 1-maze.exe File opened for modification C:\Program Files\ConnectDebug.vdx 1-maze.exe File opened for modification C:\Program Files\ProtectUnblock.vdw 1-maze.exe File opened for modification C:\Program Files\RedoMove.mpp 1-maze.exe File opened for modification C:\Program Files\SplitRestore.odt 1-maze.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt 1-maze.exe File opened for modification C:\Program Files (x86)\8820099720bd9b39.tmp 1-maze.exe File opened for modification C:\Program Files\EditBlock.rm 1-maze.exe File opened for modification C:\Program Files\TestWrite.xltm 1-maze.exe File opened for modification C:\Program Files\RegisterOut.svg 1-maze.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 504 1-maze.exe 504 1-maze.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
description pid Process Token: SeBackupPrivilege 3184 vssvc.exe Token: SeRestorePrivilege 3184 vssvc.exe Token: SeAuditPrivilege 3184 vssvc.exe Token: SeIncreaseQuotaPrivilege 192 wmic.exe Token: SeSecurityPrivilege 192 wmic.exe Token: SeTakeOwnershipPrivilege 192 wmic.exe Token: SeLoadDriverPrivilege 192 wmic.exe Token: SeSystemProfilePrivilege 192 wmic.exe Token: SeSystemtimePrivilege 192 wmic.exe Token: SeProfSingleProcessPrivilege 192 wmic.exe Token: SeIncBasePriorityPrivilege 192 wmic.exe Token: SeCreatePagefilePrivilege 192 wmic.exe Token: SeBackupPrivilege 192 wmic.exe Token: SeRestorePrivilege 192 wmic.exe Token: SeShutdownPrivilege 192 wmic.exe Token: SeDebugPrivilege 192 wmic.exe Token: SeSystemEnvironmentPrivilege 192 wmic.exe Token: SeRemoteShutdownPrivilege 192 wmic.exe Token: SeUndockPrivilege 192 wmic.exe Token: SeManageVolumePrivilege 192 wmic.exe Token: 33 192 wmic.exe Token: 34 192 wmic.exe Token: 35 192 wmic.exe Token: 36 192 wmic.exe Token: SeIncreaseQuotaPrivilege 192 wmic.exe Token: SeSecurityPrivilege 192 wmic.exe Token: SeTakeOwnershipPrivilege 192 wmic.exe Token: SeLoadDriverPrivilege 192 wmic.exe Token: SeSystemProfilePrivilege 192 wmic.exe Token: SeSystemtimePrivilege 192 wmic.exe Token: SeProfSingleProcessPrivilege 192 wmic.exe Token: SeIncBasePriorityPrivilege 192 wmic.exe Token: SeCreatePagefilePrivilege 192 wmic.exe Token: SeBackupPrivilege 192 wmic.exe Token: SeRestorePrivilege 192 wmic.exe Token: SeShutdownPrivilege 192 wmic.exe Token: SeDebugPrivilege 192 wmic.exe Token: SeSystemEnvironmentPrivilege 192 wmic.exe Token: SeRemoteShutdownPrivilege 192 wmic.exe Token: SeUndockPrivilege 192 wmic.exe Token: SeManageVolumePrivilege 192 wmic.exe Token: 33 192 wmic.exe Token: 34 192 wmic.exe Token: 35 192 wmic.exe Token: 36 192 wmic.exe Token: 33 3536 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 3536 AUDIODG.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 504 wrote to memory of 192 504 1-maze.exe 78 PID 504 wrote to memory of 192 504 1-maze.exe 78
Processes
-
C:\Users\Admin\AppData\Local\Temp\1-maze.exe"C:\Users\Admin\AppData\Local\Temp\1-maze.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:504 -
C:\Windows\system32\wbem\wmic.exe"C:\elq\..\Windows\h\a\..\..\system32\fw\xlef\e\..\..\..\wbem\k\e\u\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:192
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3184
-
C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x4081⤵
- Suspicious use of AdjustPrivilegeToken
PID:3536
-
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Public\Desktop\DECRYPT-FILES.txt1⤵PID:3976