Analysis
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max time kernel
62s -
max time network
59s -
platform
windows10-1703_x64 -
resource
win10-20240214-en -
resource tags
arch:x64arch:x86image:win10-20240214-enlocale:en-usos:windows10-1703-x64system -
submitted
15-02-2024 19:48
Static task
static1
Behavioral task
behavioral1
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win10-20240214-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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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\xaihqqhq.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\xaihqqhq.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-1-5-21-3356371483-1660115160-1611493187-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\123456789.bmp" e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exepid process 4372 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 4372 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
wmic.exevssvc.exewmic.exedescription pid process Token: SeIncreaseQuotaPrivilege 3936 wmic.exe Token: SeSecurityPrivilege 3936 wmic.exe Token: SeTakeOwnershipPrivilege 3936 wmic.exe Token: SeLoadDriverPrivilege 3936 wmic.exe Token: SeSystemProfilePrivilege 3936 wmic.exe Token: SeSystemtimePrivilege 3936 wmic.exe Token: SeProfSingleProcessPrivilege 3936 wmic.exe Token: SeIncBasePriorityPrivilege 3936 wmic.exe Token: SeCreatePagefilePrivilege 3936 wmic.exe Token: SeBackupPrivilege 3936 wmic.exe Token: SeRestorePrivilege 3936 wmic.exe Token: SeShutdownPrivilege 3936 wmic.exe Token: SeDebugPrivilege 3936 wmic.exe Token: SeSystemEnvironmentPrivilege 3936 wmic.exe Token: SeRemoteShutdownPrivilege 3936 wmic.exe Token: SeUndockPrivilege 3936 wmic.exe Token: SeManageVolumePrivilege 3936 wmic.exe Token: 33 3936 wmic.exe Token: 34 3936 wmic.exe Token: 35 3936 wmic.exe Token: 36 3936 wmic.exe Token: SeIncreaseQuotaPrivilege 3936 wmic.exe Token: SeSecurityPrivilege 3936 wmic.exe Token: SeTakeOwnershipPrivilege 3936 wmic.exe Token: SeLoadDriverPrivilege 3936 wmic.exe Token: SeSystemProfilePrivilege 3936 wmic.exe Token: SeSystemtimePrivilege 3936 wmic.exe Token: SeProfSingleProcessPrivilege 3936 wmic.exe Token: SeIncBasePriorityPrivilege 3936 wmic.exe Token: SeCreatePagefilePrivilege 3936 wmic.exe Token: SeBackupPrivilege 3936 wmic.exe Token: SeRestorePrivilege 3936 wmic.exe Token: SeShutdownPrivilege 3936 wmic.exe Token: SeDebugPrivilege 3936 wmic.exe Token: SeSystemEnvironmentPrivilege 3936 wmic.exe Token: SeRemoteShutdownPrivilege 3936 wmic.exe Token: SeUndockPrivilege 3936 wmic.exe Token: SeManageVolumePrivilege 3936 wmic.exe Token: 33 3936 wmic.exe Token: 34 3936 wmic.exe Token: 35 3936 wmic.exe Token: 36 3936 wmic.exe Token: SeBackupPrivilege 2620 vssvc.exe Token: SeRestorePrivilege 2620 vssvc.exe Token: SeAuditPrivilege 2620 vssvc.exe Token: SeIncreaseQuotaPrivilege 216 wmic.exe Token: SeSecurityPrivilege 216 wmic.exe Token: SeTakeOwnershipPrivilege 216 wmic.exe Token: SeLoadDriverPrivilege 216 wmic.exe Token: SeSystemProfilePrivilege 216 wmic.exe Token: SeSystemtimePrivilege 216 wmic.exe Token: SeProfSingleProcessPrivilege 216 wmic.exe Token: SeIncBasePriorityPrivilege 216 wmic.exe Token: SeCreatePagefilePrivilege 216 wmic.exe Token: SeBackupPrivilege 216 wmic.exe Token: SeRestorePrivilege 216 wmic.exe Token: SeShutdownPrivilege 216 wmic.exe Token: SeDebugPrivilege 216 wmic.exe Token: SeSystemEnvironmentPrivilege 216 wmic.exe Token: SeRemoteShutdownPrivilege 216 wmic.exe Token: SeUndockPrivilege 216 wmic.exe Token: SeManageVolumePrivilege 216 wmic.exe Token: 33 216 wmic.exe Token: 34 216 wmic.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exedescription pid process target process PID 4372 wrote to memory of 3936 4372 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe wmic.exe PID 4372 wrote to memory of 3936 4372 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe wmic.exe PID 4372 wrote to memory of 216 4372 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe wmic.exe PID 4372 wrote to memory of 216 4372 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe wmic.exe -
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⤵
- Drops startup file
- Sets desktop wallpaper using registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4372 -
C:\Windows\system32\wbem\wmic.exe"C:\okmk\..\Windows\jrlnu\nmq\..\..\system32\m\pk\..\..\wbem\kpob\xbkj\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3936
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C:\Windows\system32\wbem\wmic.exe"C:\mv\yxou\..\..\Windows\qas\uk\dpvht\..\..\..\system32\vfxax\eam\ksvvk\..\..\..\wbem\ji\h\jmd\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:216
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2620
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x3901⤵PID:4660
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Speech\Files\UserLexicons\SP_13C4733BCBE24CA1902F73656DB53CEC.dat
Filesize940B
MD53e470c5a236fa4f5de70d97c481b909f
SHA170dfe063015382cb8a1a1b8bea2657f62dfc7354
SHA2567c22dd35bded09103432f95a3f5703671b28af2b12bbdb3a3c8a9154a0a850f6
SHA51252a899f0437a374c3d09eb95d498db903e575019903c76d602a0b966459a12c0d21147c76f52b960b4077dca11d93252b06cef7d9afc6ead9821f499063e0c3f
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Filesize
6KB
MD53ef57fb6d9c7d8b930f62ff148dd12d3
SHA121a8ccd98875765e48097b29621bcfc4461dd5a0
SHA256ae373d78ec28b9ef7fe96c1f59d89bd20ae61053ce0c43d15c14334313e773e5
SHA5128d40787b3f5b1e7eb04263c054e70cd4ae8ff9cc485f27291532bd78a8235cc3cde4d3f402b15bcb33f1748b31d71561dd1ccc494587c142e1d282040e9cafd2