Analysis
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max time kernel
146s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
17-04-2024 14:53
Static task
static1
Behavioral task
behavioral1
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win10v2004-20240226-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:\$Recycle.Bin\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 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\ifw2mafvj.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-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\123456789.bmp" e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2360 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 3000 wmic.exe Token: SeSecurityPrivilege 3000 wmic.exe Token: SeTakeOwnershipPrivilege 3000 wmic.exe Token: SeLoadDriverPrivilege 3000 wmic.exe Token: SeSystemProfilePrivilege 3000 wmic.exe Token: SeSystemtimePrivilege 3000 wmic.exe Token: SeProfSingleProcessPrivilege 3000 wmic.exe Token: SeIncBasePriorityPrivilege 3000 wmic.exe Token: SeCreatePagefilePrivilege 3000 wmic.exe Token: SeBackupPrivilege 3000 wmic.exe Token: SeRestorePrivilege 3000 wmic.exe Token: SeShutdownPrivilege 3000 wmic.exe Token: SeDebugPrivilege 3000 wmic.exe Token: SeSystemEnvironmentPrivilege 3000 wmic.exe Token: SeRemoteShutdownPrivilege 3000 wmic.exe Token: SeUndockPrivilege 3000 wmic.exe Token: SeManageVolumePrivilege 3000 wmic.exe Token: 33 3000 wmic.exe Token: 34 3000 wmic.exe Token: 35 3000 wmic.exe Token: SeIncreaseQuotaPrivilege 3000 wmic.exe Token: SeSecurityPrivilege 3000 wmic.exe Token: SeTakeOwnershipPrivilege 3000 wmic.exe Token: SeLoadDriverPrivilege 3000 wmic.exe Token: SeSystemProfilePrivilege 3000 wmic.exe Token: SeSystemtimePrivilege 3000 wmic.exe Token: SeProfSingleProcessPrivilege 3000 wmic.exe Token: SeIncBasePriorityPrivilege 3000 wmic.exe Token: SeCreatePagefilePrivilege 3000 wmic.exe Token: SeBackupPrivilege 3000 wmic.exe Token: SeRestorePrivilege 3000 wmic.exe Token: SeShutdownPrivilege 3000 wmic.exe Token: SeDebugPrivilege 3000 wmic.exe Token: SeSystemEnvironmentPrivilege 3000 wmic.exe Token: SeRemoteShutdownPrivilege 3000 wmic.exe Token: SeUndockPrivilege 3000 wmic.exe Token: SeManageVolumePrivilege 3000 wmic.exe Token: 33 3000 wmic.exe Token: 34 3000 wmic.exe Token: 35 3000 wmic.exe Token: SeBackupPrivilege 2592 vssvc.exe Token: SeRestorePrivilege 2592 vssvc.exe Token: SeAuditPrivilege 2592 vssvc.exe Token: SeIncreaseQuotaPrivilege 2828 wmic.exe Token: SeSecurityPrivilege 2828 wmic.exe Token: SeTakeOwnershipPrivilege 2828 wmic.exe Token: SeLoadDriverPrivilege 2828 wmic.exe Token: SeSystemProfilePrivilege 2828 wmic.exe Token: SeSystemtimePrivilege 2828 wmic.exe Token: SeProfSingleProcessPrivilege 2828 wmic.exe Token: SeIncBasePriorityPrivilege 2828 wmic.exe Token: SeCreatePagefilePrivilege 2828 wmic.exe Token: SeBackupPrivilege 2828 wmic.exe Token: SeRestorePrivilege 2828 wmic.exe Token: SeShutdownPrivilege 2828 wmic.exe Token: SeDebugPrivilege 2828 wmic.exe Token: SeSystemEnvironmentPrivilege 2828 wmic.exe Token: SeRemoteShutdownPrivilege 2828 wmic.exe Token: SeUndockPrivilege 2828 wmic.exe Token: SeManageVolumePrivilege 2828 wmic.exe Token: 33 2828 wmic.exe Token: 34 2828 wmic.exe Token: 35 2828 wmic.exe Token: SeIncreaseQuotaPrivilege 2828 wmic.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2360 wrote to memory of 3000 2360 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 2360 wrote to memory of 3000 2360 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 2360 wrote to memory of 3000 2360 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 2360 wrote to memory of 3000 2360 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 2360 wrote to memory of 2828 2360 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 33 PID 2360 wrote to memory of 2828 2360 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 33 PID 2360 wrote to memory of 2828 2360 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 33 PID 2360 wrote to memory of 2828 2360 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 33 -
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:2360 -
C:\Windows\system32\wbem\wmic.exe"C:\no\gjwhr\s\..\..\..\Windows\kiqvi\ajn\..\..\system32\ex\..\wbem\imm\ff\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3000
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C:\Windows\system32\wbem\wmic.exe"C:\xge\qyrd\wcgs\..\..\..\Windows\oisrh\g\llyxt\..\..\..\system32\isreb\g\..\..\wbem\b\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2828
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2592
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:232
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
6KB
MD5515abf294d552ab3710c8aaea3712c46
SHA1c8f265163fb36258e27e4c9f13db9db5640a32d1
SHA256946e5447567259833dbfb35f84f477a4458627977b8a0afe9bb9161d8e6a3b15
SHA5129d995bc0049f7e1b6289aaf3850e04e50dbbccfb4a68d708096b55610af9b95209459119a56482e468541dde3123a1b0429b5223371e223640884eb0808b61b4
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C:\Users\Admin\AppData\Roaming\Microsoft\Speech\Files\UserLexicons\SP_C438E0A776B34191A7780EB43033CA79.dat
Filesize940B
MD554dee6f788f860c2a4f701cbc9dce9d9
SHA148ecbb401dcba5c8d45d981b9f330b2985cb24dd
SHA2565774fe2cc7b31deeabc7e3820883ffb57b0c247910f4b2ba1fbe44dc297a6330
SHA51251a6176527e5f2aa34c2988e65dbb105a94afc6e937476e33964098bde0d192eb46c468b53cf55c8ce3bdbb1f2c61b4fe97c4458fffa2445305439abb183c88e