Analysis
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max time kernel
136s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
07-02-2024 12:29
Static task
static1
Behavioral task
behavioral1
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win10v2004-20231222-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:\Users\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\yvasrzdr.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-1-5-21-3427588347-1492276948-3422228430-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\123456789.bmp" e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1940 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2764 wmic.exe Token: SeSecurityPrivilege 2764 wmic.exe Token: SeTakeOwnershipPrivilege 2764 wmic.exe Token: SeLoadDriverPrivilege 2764 wmic.exe Token: SeSystemProfilePrivilege 2764 wmic.exe Token: SeSystemtimePrivilege 2764 wmic.exe Token: SeProfSingleProcessPrivilege 2764 wmic.exe Token: SeIncBasePriorityPrivilege 2764 wmic.exe Token: SeCreatePagefilePrivilege 2764 wmic.exe Token: SeBackupPrivilege 2764 wmic.exe Token: SeRestorePrivilege 2764 wmic.exe Token: SeShutdownPrivilege 2764 wmic.exe Token: SeDebugPrivilege 2764 wmic.exe Token: SeSystemEnvironmentPrivilege 2764 wmic.exe Token: SeRemoteShutdownPrivilege 2764 wmic.exe Token: SeUndockPrivilege 2764 wmic.exe Token: SeManageVolumePrivilege 2764 wmic.exe Token: 33 2764 wmic.exe Token: 34 2764 wmic.exe Token: 35 2764 wmic.exe Token: SeIncreaseQuotaPrivilege 2764 wmic.exe Token: SeSecurityPrivilege 2764 wmic.exe Token: SeTakeOwnershipPrivilege 2764 wmic.exe Token: SeLoadDriverPrivilege 2764 wmic.exe Token: SeSystemProfilePrivilege 2764 wmic.exe Token: SeSystemtimePrivilege 2764 wmic.exe Token: SeProfSingleProcessPrivilege 2764 wmic.exe Token: SeIncBasePriorityPrivilege 2764 wmic.exe Token: SeCreatePagefilePrivilege 2764 wmic.exe Token: SeBackupPrivilege 2764 wmic.exe Token: SeRestorePrivilege 2764 wmic.exe Token: SeShutdownPrivilege 2764 wmic.exe Token: SeDebugPrivilege 2764 wmic.exe Token: SeSystemEnvironmentPrivilege 2764 wmic.exe Token: SeRemoteShutdownPrivilege 2764 wmic.exe Token: SeUndockPrivilege 2764 wmic.exe Token: SeManageVolumePrivilege 2764 wmic.exe Token: 33 2764 wmic.exe Token: 34 2764 wmic.exe Token: 35 2764 wmic.exe Token: SeBackupPrivilege 2696 vssvc.exe Token: SeRestorePrivilege 2696 vssvc.exe Token: SeAuditPrivilege 2696 vssvc.exe Token: SeIncreaseQuotaPrivilege 568 wmic.exe Token: SeSecurityPrivilege 568 wmic.exe Token: SeTakeOwnershipPrivilege 568 wmic.exe Token: SeLoadDriverPrivilege 568 wmic.exe Token: SeSystemProfilePrivilege 568 wmic.exe Token: SeSystemtimePrivilege 568 wmic.exe Token: SeProfSingleProcessPrivilege 568 wmic.exe Token: SeIncBasePriorityPrivilege 568 wmic.exe Token: SeCreatePagefilePrivilege 568 wmic.exe Token: SeBackupPrivilege 568 wmic.exe Token: SeRestorePrivilege 568 wmic.exe Token: SeShutdownPrivilege 568 wmic.exe Token: SeDebugPrivilege 568 wmic.exe Token: SeSystemEnvironmentPrivilege 568 wmic.exe Token: SeRemoteShutdownPrivilege 568 wmic.exe Token: SeUndockPrivilege 568 wmic.exe Token: SeManageVolumePrivilege 568 wmic.exe Token: 33 568 wmic.exe Token: 34 568 wmic.exe Token: 35 568 wmic.exe Token: SeIncreaseQuotaPrivilege 568 wmic.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1940 wrote to memory of 2764 1940 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 1940 wrote to memory of 2764 1940 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 1940 wrote to memory of 2764 1940 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 1940 wrote to memory of 2764 1940 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 1940 wrote to memory of 568 1940 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 34 PID 1940 wrote to memory of 568 1940 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 34 PID 1940 wrote to memory of 568 1940 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 34 PID 1940 wrote to memory of 568 1940 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 34 -
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:1940 -
C:\Windows\system32\wbem\wmic.exe"C:\dr\..\Windows\byhxr\d\..\..\system32\wpull\u\..\..\wbem\ssb\weo\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2764
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C:\Windows\system32\wbem\wmic.exe"C:\u\..\Windows\f\..\system32\txyyq\k\..\..\wbem\g\gipbq\rxcmb\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:568
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2696
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:2132
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_97F8C480400D404983EF5D80A6A42383.dat
Filesize940B
MD56e43c2a9e38b187deab5cc7cd0ff8fa8
SHA15ad2b8da9aba5439d7a3af400b64dd7c8ca43c06
SHA256a4347fc30e0b8f770e66373bc28817f1c866fb72055b55a3d7d36d11c1bee638
SHA51235943c70d96056420311f19c4b13c1ad1c5379391c4a6c10c08fd31fccfdf0f83211bc5615c8ccf4521895ef4ac98fe2cb5a4eb99da12ae697d30c1c24697117
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Filesize
6KB
MD5807d45a2fe0c45974ea7ed2fa7dddcc0
SHA1d115d0a28bb7ba5072a4b12138017c092fdfc3b6
SHA25642c452225150e4952049c451ae07975996ecfd8be90511c49911b31a1aad19f4
SHA512e2c4f4d636a93b62771030d7f59b2d73e04af9b00bba1e29f524dd880267ece9e9648a118d65c4016e1e3c4c2ae0b5fe5b5f449e58f91e8ce663072efbb8be4a