Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230221-en -
resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system -
submitted
02-05-2023 03:30
Static task
static1
Behavioral task
behavioral1
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win10v2004-20230221-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:\odt\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 5 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exedescription ioc Process File renamed C:\Users\Admin\Pictures\UnprotectExport.raw => C:\Users\Admin\Pictures\UnprotectExport.raw.t8Cw e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File opened for modification C:\Users\Admin\Pictures\UnpublishGroup.tiff e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\UnpublishGroup.tiff => C:\Users\Admin\Pictures\UnpublishGroup.tiff.t8Cw e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\WriteTest.crw => C:\Users\Admin\Pictures\WriteTest.crw.CQEj e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File renamed C:\Users\Admin\Pictures\SaveDisable.raw => C:\Users\Admin\Pictures\SaveDisable.raw.t8Cw e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Drops startup file 4 IoCs
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exedescription 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\rbje00.dat e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\DECRYPT-FILES.html e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\rbje00.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
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\123456789.bmp" e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exepid Process 4752 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 4752 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
wmic.exevssvc.exewmic.exedescription pid Process Token: SeIncreaseQuotaPrivilege 3564 wmic.exe Token: SeSecurityPrivilege 3564 wmic.exe Token: SeTakeOwnershipPrivilege 3564 wmic.exe Token: SeLoadDriverPrivilege 3564 wmic.exe Token: SeSystemProfilePrivilege 3564 wmic.exe Token: SeSystemtimePrivilege 3564 wmic.exe Token: SeProfSingleProcessPrivilege 3564 wmic.exe Token: SeIncBasePriorityPrivilege 3564 wmic.exe Token: SeCreatePagefilePrivilege 3564 wmic.exe Token: SeBackupPrivilege 3564 wmic.exe Token: SeRestorePrivilege 3564 wmic.exe Token: SeShutdownPrivilege 3564 wmic.exe Token: SeDebugPrivilege 3564 wmic.exe Token: SeSystemEnvironmentPrivilege 3564 wmic.exe Token: SeRemoteShutdownPrivilege 3564 wmic.exe Token: SeUndockPrivilege 3564 wmic.exe Token: SeManageVolumePrivilege 3564 wmic.exe Token: 33 3564 wmic.exe Token: 34 3564 wmic.exe Token: 35 3564 wmic.exe Token: 36 3564 wmic.exe Token: SeIncreaseQuotaPrivilege 3564 wmic.exe Token: SeSecurityPrivilege 3564 wmic.exe Token: SeTakeOwnershipPrivilege 3564 wmic.exe Token: SeLoadDriverPrivilege 3564 wmic.exe Token: SeSystemProfilePrivilege 3564 wmic.exe Token: SeSystemtimePrivilege 3564 wmic.exe Token: SeProfSingleProcessPrivilege 3564 wmic.exe Token: SeIncBasePriorityPrivilege 3564 wmic.exe Token: SeCreatePagefilePrivilege 3564 wmic.exe Token: SeBackupPrivilege 3564 wmic.exe Token: SeRestorePrivilege 3564 wmic.exe Token: SeShutdownPrivilege 3564 wmic.exe Token: SeDebugPrivilege 3564 wmic.exe Token: SeSystemEnvironmentPrivilege 3564 wmic.exe Token: SeRemoteShutdownPrivilege 3564 wmic.exe Token: SeUndockPrivilege 3564 wmic.exe Token: SeManageVolumePrivilege 3564 wmic.exe Token: 33 3564 wmic.exe Token: 34 3564 wmic.exe Token: 35 3564 wmic.exe Token: 36 3564 wmic.exe Token: SeBackupPrivilege 1908 vssvc.exe Token: SeRestorePrivilege 1908 vssvc.exe Token: SeAuditPrivilege 1908 vssvc.exe Token: SeIncreaseQuotaPrivilege 4336 wmic.exe Token: SeSecurityPrivilege 4336 wmic.exe Token: SeTakeOwnershipPrivilege 4336 wmic.exe Token: SeLoadDriverPrivilege 4336 wmic.exe Token: SeSystemProfilePrivilege 4336 wmic.exe Token: SeSystemtimePrivilege 4336 wmic.exe Token: SeProfSingleProcessPrivilege 4336 wmic.exe Token: SeIncBasePriorityPrivilege 4336 wmic.exe Token: SeCreatePagefilePrivilege 4336 wmic.exe Token: SeBackupPrivilege 4336 wmic.exe Token: SeRestorePrivilege 4336 wmic.exe Token: SeShutdownPrivilege 4336 wmic.exe Token: SeDebugPrivilege 4336 wmic.exe Token: SeSystemEnvironmentPrivilege 4336 wmic.exe Token: SeRemoteShutdownPrivilege 4336 wmic.exe Token: SeUndockPrivilege 4336 wmic.exe Token: SeManageVolumePrivilege 4336 wmic.exe Token: 33 4336 wmic.exe Token: 34 4336 wmic.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exedescription pid Process procid_target PID 4752 wrote to memory of 3564 4752 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 87 PID 4752 wrote to memory of 3564 4752 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 87 PID 4752 wrote to memory of 4336 4752 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 93 PID 4752 wrote to memory of 4336 4752 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 93 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
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:4752 -
C:\Windows\system32\wbem\wmic.exe"C:\sqpwp\oqrl\..\..\Windows\qut\muygw\..\..\system32\ifln\b\jf\..\..\..\wbem\eus\f\glh\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3564
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C:\Windows\system32\wbem\wmic.exe"C:\oi\w\..\..\Windows\cjy\sn\..\..\system32\ctinp\uylf\qs\..\..\..\wbem\cg\ej\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4336
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1908
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x514 0x50c1⤵PID:4512
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Speech\Files\UserLexicons\SP_A1A3547958C34ABF859611AB81D385CE.dat
Filesize940B
MD5e511064eec737e91ed5565ceca910097
SHA1f10928431b52c46f1302f62bbd61a436f4d0bccc
SHA256be15e35ceefe504d48e681c32a72ab5ac802d5802e6ed0b68eac21350cdcffe9
SHA512622d97939b80b50ef4f9f9a0b942868ec70955d5c706bb2319c5f9efb156704bb387f65d7d8de6e215ce57ef1f4dedc533815dc0ee04d2269a636c1835cc9d8b
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Filesize
6KB
MD57aee176338a90ce479e1ffca86f1289f
SHA1bc0f8226d56a55de4512257e81979b66c8707eaf
SHA2569b8accd003400e7194b3e818d97cfadabda787cafb85946e659150e897f57ab6
SHA512a75fe795e0f28dd19c9a51ca0321f21ab84276a0cb12c601575d47f1ed67a3f8daac0f0e0eaa406c0e58307fcb9d88aed1175861a11649a073cc8ff4beabd1ff