Analysis
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max time kernel
147s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
12-10-2023 12:57
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:\$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
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\jrnyh9a7s.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-1-5-21-86725733-3001458681-3405935542-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\123456789.bmp" e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exepid Process 1704 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
wmic.exevssvc.exewmic.exedescription pid Process Token: SeIncreaseQuotaPrivilege 2756 wmic.exe Token: SeSecurityPrivilege 2756 wmic.exe Token: SeTakeOwnershipPrivilege 2756 wmic.exe Token: SeLoadDriverPrivilege 2756 wmic.exe Token: SeSystemProfilePrivilege 2756 wmic.exe Token: SeSystemtimePrivilege 2756 wmic.exe Token: SeProfSingleProcessPrivilege 2756 wmic.exe Token: SeIncBasePriorityPrivilege 2756 wmic.exe Token: SeCreatePagefilePrivilege 2756 wmic.exe Token: SeBackupPrivilege 2756 wmic.exe Token: SeRestorePrivilege 2756 wmic.exe Token: SeShutdownPrivilege 2756 wmic.exe Token: SeDebugPrivilege 2756 wmic.exe Token: SeSystemEnvironmentPrivilege 2756 wmic.exe Token: SeRemoteShutdownPrivilege 2756 wmic.exe Token: SeUndockPrivilege 2756 wmic.exe Token: SeManageVolumePrivilege 2756 wmic.exe Token: 33 2756 wmic.exe Token: 34 2756 wmic.exe Token: 35 2756 wmic.exe Token: SeIncreaseQuotaPrivilege 2756 wmic.exe Token: SeSecurityPrivilege 2756 wmic.exe Token: SeTakeOwnershipPrivilege 2756 wmic.exe Token: SeLoadDriverPrivilege 2756 wmic.exe Token: SeSystemProfilePrivilege 2756 wmic.exe Token: SeSystemtimePrivilege 2756 wmic.exe Token: SeProfSingleProcessPrivilege 2756 wmic.exe Token: SeIncBasePriorityPrivilege 2756 wmic.exe Token: SeCreatePagefilePrivilege 2756 wmic.exe Token: SeBackupPrivilege 2756 wmic.exe Token: SeRestorePrivilege 2756 wmic.exe Token: SeShutdownPrivilege 2756 wmic.exe Token: SeDebugPrivilege 2756 wmic.exe Token: SeSystemEnvironmentPrivilege 2756 wmic.exe Token: SeRemoteShutdownPrivilege 2756 wmic.exe Token: SeUndockPrivilege 2756 wmic.exe Token: SeManageVolumePrivilege 2756 wmic.exe Token: 33 2756 wmic.exe Token: 34 2756 wmic.exe Token: 35 2756 wmic.exe Token: SeBackupPrivilege 2508 vssvc.exe Token: SeRestorePrivilege 2508 vssvc.exe Token: SeAuditPrivilege 2508 vssvc.exe Token: SeIncreaseQuotaPrivilege 2340 wmic.exe Token: SeSecurityPrivilege 2340 wmic.exe Token: SeTakeOwnershipPrivilege 2340 wmic.exe Token: SeLoadDriverPrivilege 2340 wmic.exe Token: SeSystemProfilePrivilege 2340 wmic.exe Token: SeSystemtimePrivilege 2340 wmic.exe Token: SeProfSingleProcessPrivilege 2340 wmic.exe Token: SeIncBasePriorityPrivilege 2340 wmic.exe Token: SeCreatePagefilePrivilege 2340 wmic.exe Token: SeBackupPrivilege 2340 wmic.exe Token: SeRestorePrivilege 2340 wmic.exe Token: SeShutdownPrivilege 2340 wmic.exe Token: SeDebugPrivilege 2340 wmic.exe Token: SeSystemEnvironmentPrivilege 2340 wmic.exe Token: SeRemoteShutdownPrivilege 2340 wmic.exe Token: SeUndockPrivilege 2340 wmic.exe Token: SeManageVolumePrivilege 2340 wmic.exe Token: 33 2340 wmic.exe Token: 34 2340 wmic.exe Token: 35 2340 wmic.exe Token: SeIncreaseQuotaPrivilege 2340 wmic.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exedescription pid Process procid_target PID 1704 wrote to memory of 2756 1704 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 1704 wrote to memory of 2756 1704 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 1704 wrote to memory of 2756 1704 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 1704 wrote to memory of 2756 1704 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 1704 wrote to memory of 2340 1704 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 35 PID 1704 wrote to memory of 2340 1704 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 35 PID 1704 wrote to memory of 2340 1704 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 35 PID 1704 wrote to memory of 2340 1704 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 35 -
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:1704 -
C:\Windows\system32\wbem\wmic.exe"C:\o\ch\phye\..\..\..\Windows\nnwa\..\system32\jh\jmtu\u\..\..\..\wbem\d\pp\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2756
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C:\Windows\system32\wbem\wmic.exe"C:\qkvnm\..\Windows\ho\jod\..\..\system32\cun\v\n\..\..\..\wbem\wg\k\vo\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2340
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2508
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:2996
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
6KB
MD5c588df37cef3b9fcd8bf5b48eafde1c9
SHA14d30d6b3065558272c6d1499fb66fcba15ae91e2
SHA256d3a49ec54c5078d83224aecae7b10a83f555240239a7a509af0d0dce8202d197
SHA5128c1b5486b532077b087c42ec640646d100dede8891e3a339f40339a79f704e323c60147aab79a4001d77a3233cc410f970168682e9f9c58c706839be1cf2491a
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C:\Users\Admin\AppData\Roaming\Microsoft\Speech\Files\UserLexicons\SP_81CD46C254044342AF96FE9169C60CD3.dat
Filesize940B
MD59d528d90aaa92010f02e159629f5986b
SHA14c4dd373f3a81e8338156fcd8157831efea72c6e
SHA256b768b99216ee321246f47e013455b622e27946a869c700c51efb6378328820a6
SHA512362403087afb0de0e005877f9daeacfe1c52eade2655cf1aeeb0f2285eab18979a3071bf8749285386362f2fc9db540238049870e410b57c1662354458d37166