Analysis
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max time kernel
141s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
25-09-2023 08:16
Static task
static1
Behavioral task
behavioral1
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win10v2004-20230915-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
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tdn6imu0w.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\tdn6imu0w.dat e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.html 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-1-5-21-919254492-3979293997-764407192-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\123456789.bmp" e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4632 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 4632 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4916 wmic.exe Token: SeSecurityPrivilege 4916 wmic.exe Token: SeTakeOwnershipPrivilege 4916 wmic.exe Token: SeLoadDriverPrivilege 4916 wmic.exe Token: SeSystemProfilePrivilege 4916 wmic.exe Token: SeSystemtimePrivilege 4916 wmic.exe Token: SeProfSingleProcessPrivilege 4916 wmic.exe Token: SeIncBasePriorityPrivilege 4916 wmic.exe Token: SeCreatePagefilePrivilege 4916 wmic.exe Token: SeBackupPrivilege 4916 wmic.exe Token: SeRestorePrivilege 4916 wmic.exe Token: SeShutdownPrivilege 4916 wmic.exe Token: SeDebugPrivilege 4916 wmic.exe Token: SeSystemEnvironmentPrivilege 4916 wmic.exe Token: SeRemoteShutdownPrivilege 4916 wmic.exe Token: SeUndockPrivilege 4916 wmic.exe Token: SeManageVolumePrivilege 4916 wmic.exe Token: 33 4916 wmic.exe Token: 34 4916 wmic.exe Token: 35 4916 wmic.exe Token: 36 4916 wmic.exe Token: SeIncreaseQuotaPrivilege 4916 wmic.exe Token: SeSecurityPrivilege 4916 wmic.exe Token: SeTakeOwnershipPrivilege 4916 wmic.exe Token: SeLoadDriverPrivilege 4916 wmic.exe Token: SeSystemProfilePrivilege 4916 wmic.exe Token: SeSystemtimePrivilege 4916 wmic.exe Token: SeProfSingleProcessPrivilege 4916 wmic.exe Token: SeIncBasePriorityPrivilege 4916 wmic.exe Token: SeCreatePagefilePrivilege 4916 wmic.exe Token: SeBackupPrivilege 4916 wmic.exe Token: SeRestorePrivilege 4916 wmic.exe Token: SeShutdownPrivilege 4916 wmic.exe Token: SeDebugPrivilege 4916 wmic.exe Token: SeSystemEnvironmentPrivilege 4916 wmic.exe Token: SeRemoteShutdownPrivilege 4916 wmic.exe Token: SeUndockPrivilege 4916 wmic.exe Token: SeManageVolumePrivilege 4916 wmic.exe Token: 33 4916 wmic.exe Token: 34 4916 wmic.exe Token: 35 4916 wmic.exe Token: 36 4916 wmic.exe Token: SeBackupPrivilege 1888 vssvc.exe Token: SeRestorePrivilege 1888 vssvc.exe Token: SeAuditPrivilege 1888 vssvc.exe Token: SeIncreaseQuotaPrivilege 5084 wmic.exe Token: SeSecurityPrivilege 5084 wmic.exe Token: SeTakeOwnershipPrivilege 5084 wmic.exe Token: SeLoadDriverPrivilege 5084 wmic.exe Token: SeSystemProfilePrivilege 5084 wmic.exe Token: SeSystemtimePrivilege 5084 wmic.exe Token: SeProfSingleProcessPrivilege 5084 wmic.exe Token: SeIncBasePriorityPrivilege 5084 wmic.exe Token: SeCreatePagefilePrivilege 5084 wmic.exe Token: SeBackupPrivilege 5084 wmic.exe Token: SeRestorePrivilege 5084 wmic.exe Token: SeShutdownPrivilege 5084 wmic.exe Token: SeDebugPrivilege 5084 wmic.exe Token: SeSystemEnvironmentPrivilege 5084 wmic.exe Token: SeRemoteShutdownPrivilege 5084 wmic.exe Token: SeUndockPrivilege 5084 wmic.exe Token: SeManageVolumePrivilege 5084 wmic.exe Token: 33 5084 wmic.exe Token: 34 5084 wmic.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 4632 wrote to memory of 4916 4632 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 96 PID 4632 wrote to memory of 4916 4632 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 96 PID 4632 wrote to memory of 5084 4632 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 102 PID 4632 wrote to memory of 5084 4632 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 102 -
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:4632 -
C:\Windows\system32\wbem\wmic.exe"C:\p\uiuxv\klmfu\..\..\..\Windows\ua\..\system32\i\ucukl\..\..\wbem\ky\uor\d\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4916
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C:\Windows\system32\wbem\wmic.exe"C:\t\morjo\..\..\Windows\ruflo\xkoc\..\..\system32\r\..\wbem\fgl\jw\oyx\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:5084
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1888
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x304 0x3081⤵PID:656
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_8E7D15DCE096497CAA7E089555ED9DAA.dat
Filesize940B
MD5c6e08dc6a6b73b710daae3e80c18e847
SHA133f598376bbbabbd8827763bf71424d692655241
SHA2568911185b28c1f6b1e28a6d6e396e1d0880c07f7dda48ce745f925720351c8194
SHA51298b15c2d06feec5f54765372015ef0b24d544927d6f695788251136325c8a871d045094cd8877d319f9236916bfe759433134d479f88ec574d3f65660a21f6c8
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Filesize
6KB
MD5112e6e70d90a92e067b81fff517ad5b6
SHA1e142476f4d07bdfffaa6a42d89a3d3bb0f61f1c6
SHA256c5168fe3ce0582e934f9395e425e272e140d188b0df7a4da97500b8a9b57370a
SHA5121bbcce91759e1ac7dcb2d80c718e8557911e8afc8ba694fd523df6c45a7ceae599a3dfe710edbbe41028781bfcfbcd1881c447396466d170e99d9c6031b04690