Analysis
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max time kernel
64s -
max time network
60s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
22-08-2022 20:28
Static task
static1
Behavioral task
behavioral1
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win10v2004-20220812-en
General
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Target
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
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Size
473KB
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MD5
f83fb9ce6a83da58b20685c1d7e1e546
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SHA1
01c459b549c1c2a68208d38d4ba5e36d29212a4f
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SHA256
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684
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SHA512
934ec9073a28b90e8df785bef49f224789da59f83729208b92dba0503e2894b3f48ed04b20de1ba49374b1cd26f0c87e8e5ab79e817258135e3be2c171f3f396
Malware Config
Extracted
C:\DECRYPT-FILES.html
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 9 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\BlockSearch.tif => C:\Users\Admin\Pictures\BlockSearch.tif.oCTO e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\MoveRepair.png => C:\Users\Admin\Pictures\MoveRepair.png.fntBMf e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File opened for modification C:\Users\Admin\Pictures\BlockImport.tiff e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\ConfirmSend.raw => C:\Users\Admin\Pictures\ConfirmSend.raw.9DAQf e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\ConnectSave.crw => C:\Users\Admin\Pictures\ConnectSave.crw.9DAQf e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\SearchMount.tif => C:\Users\Admin\Pictures\SearchMount.tif.fntBMf e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File opened for modification C:\Users\Admin\Pictures\SkipDisable.tiff e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\SkipDisable.tiff => C:\Users\Admin\Pictures\SkipDisable.tiff.m2Cepnq e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\BlockImport.tiff => C:\Users\Admin\Pictures\BlockImport.tiff.oCTO e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.html e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rkxnr.dat e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.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-1-5-21-3845472200-3839195424-595303356-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\123456789.bmp" e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1208 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2044 wmic.exe Token: SeSecurityPrivilege 2044 wmic.exe Token: SeTakeOwnershipPrivilege 2044 wmic.exe Token: SeLoadDriverPrivilege 2044 wmic.exe Token: SeSystemProfilePrivilege 2044 wmic.exe Token: SeSystemtimePrivilege 2044 wmic.exe Token: SeProfSingleProcessPrivilege 2044 wmic.exe Token: SeIncBasePriorityPrivilege 2044 wmic.exe Token: SeCreatePagefilePrivilege 2044 wmic.exe Token: SeBackupPrivilege 2044 wmic.exe Token: SeRestorePrivilege 2044 wmic.exe Token: SeShutdownPrivilege 2044 wmic.exe Token: SeDebugPrivilege 2044 wmic.exe Token: SeSystemEnvironmentPrivilege 2044 wmic.exe Token: SeRemoteShutdownPrivilege 2044 wmic.exe Token: SeUndockPrivilege 2044 wmic.exe Token: SeManageVolumePrivilege 2044 wmic.exe Token: 33 2044 wmic.exe Token: 34 2044 wmic.exe Token: 35 2044 wmic.exe Token: SeIncreaseQuotaPrivilege 2044 wmic.exe Token: SeSecurityPrivilege 2044 wmic.exe Token: SeTakeOwnershipPrivilege 2044 wmic.exe Token: SeLoadDriverPrivilege 2044 wmic.exe Token: SeSystemProfilePrivilege 2044 wmic.exe Token: SeSystemtimePrivilege 2044 wmic.exe Token: SeProfSingleProcessPrivilege 2044 wmic.exe Token: SeIncBasePriorityPrivilege 2044 wmic.exe Token: SeCreatePagefilePrivilege 2044 wmic.exe Token: SeBackupPrivilege 2044 wmic.exe Token: SeRestorePrivilege 2044 wmic.exe Token: SeShutdownPrivilege 2044 wmic.exe Token: SeDebugPrivilege 2044 wmic.exe Token: SeSystemEnvironmentPrivilege 2044 wmic.exe Token: SeRemoteShutdownPrivilege 2044 wmic.exe Token: SeUndockPrivilege 2044 wmic.exe Token: SeManageVolumePrivilege 2044 wmic.exe Token: 33 2044 wmic.exe Token: 34 2044 wmic.exe Token: 35 2044 wmic.exe Token: SeBackupPrivilege 972 vssvc.exe Token: SeRestorePrivilege 972 vssvc.exe Token: SeAuditPrivilege 972 vssvc.exe Token: SeIncreaseQuotaPrivilege 1308 wmic.exe Token: SeSecurityPrivilege 1308 wmic.exe Token: SeTakeOwnershipPrivilege 1308 wmic.exe Token: SeLoadDriverPrivilege 1308 wmic.exe Token: SeSystemProfilePrivilege 1308 wmic.exe Token: SeSystemtimePrivilege 1308 wmic.exe Token: SeProfSingleProcessPrivilege 1308 wmic.exe Token: SeIncBasePriorityPrivilege 1308 wmic.exe Token: SeCreatePagefilePrivilege 1308 wmic.exe Token: SeBackupPrivilege 1308 wmic.exe Token: SeRestorePrivilege 1308 wmic.exe Token: SeShutdownPrivilege 1308 wmic.exe Token: SeDebugPrivilege 1308 wmic.exe Token: SeSystemEnvironmentPrivilege 1308 wmic.exe Token: SeRemoteShutdownPrivilege 1308 wmic.exe Token: SeUndockPrivilege 1308 wmic.exe Token: SeManageVolumePrivilege 1308 wmic.exe Token: 33 1308 wmic.exe Token: 34 1308 wmic.exe Token: 35 1308 wmic.exe Token: SeIncreaseQuotaPrivilege 1308 wmic.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1208 wrote to memory of 2044 1208 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 27 PID 1208 wrote to memory of 2044 1208 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 27 PID 1208 wrote to memory of 2044 1208 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 27 PID 1208 wrote to memory of 2044 1208 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 27 PID 1208 wrote to memory of 1308 1208 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 33 PID 1208 wrote to memory of 1308 1208 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 33 PID 1208 wrote to memory of 1308 1208 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 33 PID 1208 wrote to memory of 1308 1208 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 33
Processes
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C:\Users\Admin\AppData\Local\Temp\e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe"C:\Users\Admin\AppData\Local\Temp\e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe"1⤵
- Modifies extensions of user files
- Drops startup file
- Sets desktop wallpaper using registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1208 -
C:\Windows\system32\wbem\wmic.exe"C:\vbg\dtxl\..\..\Windows\ys\..\system32\hvcx\..\wbem\fjh\w\x\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2044
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C:\Windows\system32\wbem\wmic.exe"C:\o\wqpo\..\..\Windows\xspj\jkhlm\..\..\system32\gn\ngto\..\..\wbem\nmnmr\n\mga\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1308
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:972
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:556
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x5541⤵PID:1624