Analysis
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max time kernel
150s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
20-05-2022 22:45
Static task
static1
Behavioral task
behavioral1
Sample
a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe
Resource
win10v2004-20220414-en
General
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Target
a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe
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Size
948KB
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MD5
ebeb8240d17ba5e759aa414f1a6b23fd
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SHA1
893b8be516a8a35a8debd38871bd70c8fbdfd901
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SHA256
a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d
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SHA512
fad11f4a1f488d57acb6faf27762b846eb3caeba6ee1b1712ba25a89c9bcbae4bbe934789d7948071dc578161c4fd3d89c22f214a3d6e23dc609c0a4d962b660
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
system.exepid process 1556 system.exe -
Modifies Windows Firewall 1 TTPs
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Drops startup file 2 IoCs
Processes:
system.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ef497d298b8155c42a11137060f652a6.exe system.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ef497d298b8155c42a11137060f652a6.exe system.exe -
Loads dropped DLL 1 IoCs
Processes:
a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exepid process 2024 a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
system.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ef497d298b8155c42a11137060f652a6 = "\"C:\\Users\\Admin\\system.exe\" .." system.exe Set value (str) \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\ef497d298b8155c42a11137060f652a6 = "\"C:\\Users\\Admin\\system.exe\" .." system.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 11 IoCs
Processes:
a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exesystem.exepid process 2024 a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe 2024 a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe 1556 system.exe 1556 system.exe 1556 system.exe 1556 system.exe 1556 system.exe 1556 system.exe 1556 system.exe 1556 system.exe 1556 system.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of AdjustPrivilegeToken 27 IoCs
Processes:
system.exedescription pid process Token: SeDebugPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe Token: 33 1556 system.exe Token: SeIncBasePriorityPrivilege 1556 system.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exesystem.exepid process 2024 a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe 1556 system.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exesystem.exedescription pid process target process PID 2024 wrote to memory of 1556 2024 a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe system.exe PID 2024 wrote to memory of 1556 2024 a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe system.exe PID 2024 wrote to memory of 1556 2024 a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe system.exe PID 2024 wrote to memory of 1556 2024 a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe system.exe PID 1556 wrote to memory of 1616 1556 system.exe netsh.exe PID 1556 wrote to memory of 1616 1556 system.exe netsh.exe PID 1556 wrote to memory of 1616 1556 system.exe netsh.exe PID 1556 wrote to memory of 1616 1556 system.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe"C:\Users\Admin\AppData\Local\Temp\a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\system.exe"C:\Users\Admin\system.exe"2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\system.exe" "system.exe" ENABLE3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\system.exeFilesize
948KB
MD5ebeb8240d17ba5e759aa414f1a6b23fd
SHA1893b8be516a8a35a8debd38871bd70c8fbdfd901
SHA256a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d
SHA512fad11f4a1f488d57acb6faf27762b846eb3caeba6ee1b1712ba25a89c9bcbae4bbe934789d7948071dc578161c4fd3d89c22f214a3d6e23dc609c0a4d962b660
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\??\c:\users\admin\system.exeFilesize
948KB
MD5ebeb8240d17ba5e759aa414f1a6b23fd
SHA1893b8be516a8a35a8debd38871bd70c8fbdfd901
SHA256a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d
SHA512fad11f4a1f488d57acb6faf27762b846eb3caeba6ee1b1712ba25a89c9bcbae4bbe934789d7948071dc578161c4fd3d89c22f214a3d6e23dc609c0a4d962b660
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\Users\Admin\system.exeFilesize
948KB
MD5ebeb8240d17ba5e759aa414f1a6b23fd
SHA1893b8be516a8a35a8debd38871bd70c8fbdfd901
SHA256a5a903be2b7397679980ac8b0ddfcaf81973698c900cac418f5312630a45911d
SHA512fad11f4a1f488d57acb6faf27762b846eb3caeba6ee1b1712ba25a89c9bcbae4bbe934789d7948071dc578161c4fd3d89c22f214a3d6e23dc609c0a4d962b660
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memory/1556-57-0x0000000000000000-mapping.dmp
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memory/1556-61-0x0000000074110000-0x00000000746BB000-memory.dmpFilesize
5.7MB
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memory/1616-62-0x0000000000000000-mapping.dmp
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memory/2024-54-0x0000000075381000-0x0000000075383000-memory.dmpFilesize
8KB
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memory/2024-55-0x00000000746C0000-0x0000000074C6B000-memory.dmpFilesize
5.7MB