Analysis
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max time kernel
139s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
03-01-2023 05:42
Static task
static1
Behavioral task
behavioral1
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win10v2004-20221111-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
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SSDEEP
12288:v6l/7FpnaeoQbRLBYdunMCayql4YcQD+AgJbAWgjbgpQ:CDna43YAKl4Yci+AggEpQ
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 8 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\ResumeEdit.tiff => C:\Users\Admin\Pictures\ResumeEdit.tiff.rwhQ e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\UnregisterGrant.raw => C:\Users\Admin\Pictures\UnregisterGrant.raw.jT7H2 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\ConvertToSet.raw => C:\Users\Admin\Pictures\ConvertToSet.raw.2OOs e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\GrantWait.png => C:\Users\Admin\Pictures\GrantWait.png.2OOs e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\ImportComplete.raw => C:\Users\Admin\Pictures\ImportComplete.raw.rwhQ e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File opened for modification C:\Users\Admin\Pictures\NewBackup.tiff e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\NewBackup.tiff => C:\Users\Admin\Pictures\NewBackup.tiff.rwhQ e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File opened for modification C:\Users\Admin\Pictures\ResumeEdit.tiff 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\yu0ud.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-1-5-21-3406023954-474543476-3319432036-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\123456789.bmp" e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 840 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2016 wmic.exe Token: SeSecurityPrivilege 2016 wmic.exe Token: SeTakeOwnershipPrivilege 2016 wmic.exe Token: SeLoadDriverPrivilege 2016 wmic.exe Token: SeSystemProfilePrivilege 2016 wmic.exe Token: SeSystemtimePrivilege 2016 wmic.exe Token: SeProfSingleProcessPrivilege 2016 wmic.exe Token: SeIncBasePriorityPrivilege 2016 wmic.exe Token: SeCreatePagefilePrivilege 2016 wmic.exe Token: SeBackupPrivilege 2016 wmic.exe Token: SeRestorePrivilege 2016 wmic.exe Token: SeShutdownPrivilege 2016 wmic.exe Token: SeDebugPrivilege 2016 wmic.exe Token: SeSystemEnvironmentPrivilege 2016 wmic.exe Token: SeRemoteShutdownPrivilege 2016 wmic.exe Token: SeUndockPrivilege 2016 wmic.exe Token: SeManageVolumePrivilege 2016 wmic.exe Token: 33 2016 wmic.exe Token: 34 2016 wmic.exe Token: 35 2016 wmic.exe Token: SeIncreaseQuotaPrivilege 2016 wmic.exe Token: SeSecurityPrivilege 2016 wmic.exe Token: SeTakeOwnershipPrivilege 2016 wmic.exe Token: SeLoadDriverPrivilege 2016 wmic.exe Token: SeSystemProfilePrivilege 2016 wmic.exe Token: SeSystemtimePrivilege 2016 wmic.exe Token: SeProfSingleProcessPrivilege 2016 wmic.exe Token: SeIncBasePriorityPrivilege 2016 wmic.exe Token: SeCreatePagefilePrivilege 2016 wmic.exe Token: SeBackupPrivilege 2016 wmic.exe Token: SeRestorePrivilege 2016 wmic.exe Token: SeShutdownPrivilege 2016 wmic.exe Token: SeDebugPrivilege 2016 wmic.exe Token: SeSystemEnvironmentPrivilege 2016 wmic.exe Token: SeRemoteShutdownPrivilege 2016 wmic.exe Token: SeUndockPrivilege 2016 wmic.exe Token: SeManageVolumePrivilege 2016 wmic.exe Token: 33 2016 wmic.exe Token: 34 2016 wmic.exe Token: 35 2016 wmic.exe Token: SeBackupPrivilege 1912 vssvc.exe Token: SeRestorePrivilege 1912 vssvc.exe Token: SeAuditPrivilege 1912 vssvc.exe Token: SeIncreaseQuotaPrivilege 752 wmic.exe Token: SeSecurityPrivilege 752 wmic.exe Token: SeTakeOwnershipPrivilege 752 wmic.exe Token: SeLoadDriverPrivilege 752 wmic.exe Token: SeSystemProfilePrivilege 752 wmic.exe Token: SeSystemtimePrivilege 752 wmic.exe Token: SeProfSingleProcessPrivilege 752 wmic.exe Token: SeIncBasePriorityPrivilege 752 wmic.exe Token: SeCreatePagefilePrivilege 752 wmic.exe Token: SeBackupPrivilege 752 wmic.exe Token: SeRestorePrivilege 752 wmic.exe Token: SeShutdownPrivilege 752 wmic.exe Token: SeDebugPrivilege 752 wmic.exe Token: SeSystemEnvironmentPrivilege 752 wmic.exe Token: SeRemoteShutdownPrivilege 752 wmic.exe Token: SeUndockPrivilege 752 wmic.exe Token: SeManageVolumePrivilege 752 wmic.exe Token: 33 752 wmic.exe Token: 34 752 wmic.exe Token: 35 752 wmic.exe Token: SeIncreaseQuotaPrivilege 752 wmic.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 840 wrote to memory of 2016 840 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 840 wrote to memory of 2016 840 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 840 wrote to memory of 2016 840 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 840 wrote to memory of 2016 840 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 840 wrote to memory of 752 840 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 33 PID 840 wrote to memory of 752 840 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 33 PID 840 wrote to memory of 752 840 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 33 PID 840 wrote to memory of 752 840 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:840 -
C:\Windows\system32\wbem\wmic.exe"C:\dev\..\Windows\oyv\mrir\dy\..\..\..\system32\o\kvxtp\..\..\wbem\h\w\is\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2016
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C:\Windows\system32\wbem\wmic.exe"C:\mge\..\Windows\klsd\..\system32\iofu\ygpmp\..\..\wbem\dw\tgx\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:752
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1912
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:1596
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x4501⤵PID:1220