Analysis
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max time kernel
153s -
max time network
168s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
01-07-2022 07:01
Static task
static1
Behavioral task
behavioral1
Sample
bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe
Resource
win7-20220414-en
General
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Target
bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe
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Size
568KB
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MD5
3acd878dcad8af0f84eae82ae801b654
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SHA1
14931b89a4adada1d61e9aa3d437ce74045898ce
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SHA256
bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09
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SHA512
934131e128f7ed31b92e7340100b6a50d1fa40482c3ea8fbff91f21cc6718fc7cc66eaf235d5746d51ba22872a499c1f659c69477bf07f3d60ac1bb6a74075c6
Malware Config
Signatures
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Kutaki Executable 2 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dvklybch.exe family_kutaki C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dvklybch.exe family_kutaki -
Executes dropped EXE 1 IoCs
Processes:
dvklybch.exepid process 4416 dvklybch.exe -
Drops startup file 2 IoCs
Processes:
bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dvklybch.exe bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dvklybch.exe bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
dvklybch.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum dvklybch.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 dvklybch.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 SetWindowsHookEx 6 IoCs
Processes:
bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exedvklybch.exepid process 4268 bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe 4268 bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe 4268 bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe 4416 dvklybch.exe 4416 dvklybch.exe 4416 dvklybch.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exedescription pid process target process PID 4268 wrote to memory of 4248 4268 bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe cmd.exe PID 4268 wrote to memory of 4248 4268 bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe cmd.exe PID 4268 wrote to memory of 4248 4268 bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe cmd.exe PID 4268 wrote to memory of 4416 4268 bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe dvklybch.exe PID 4268 wrote to memory of 4416 4268 bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe dvklybch.exe PID 4268 wrote to memory of 4416 4268 bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe dvklybch.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe"C:\Users\Admin\AppData\Local\Temp\bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09.exe"1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4268 -
C:\Windows\SysWOW64\cmd.execmd.exe /c C:\Users\Admin\AppData\Local\Temp\2⤵PID:4248
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dvklybch.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dvklybch.exe"2⤵
- Executes dropped EXE
- Maps connected drives based on registry
- Suspicious use of SetWindowsHookEx
PID:4416
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
568KB
MD53acd878dcad8af0f84eae82ae801b654
SHA114931b89a4adada1d61e9aa3d437ce74045898ce
SHA256bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09
SHA512934131e128f7ed31b92e7340100b6a50d1fa40482c3ea8fbff91f21cc6718fc7cc66eaf235d5746d51ba22872a499c1f659c69477bf07f3d60ac1bb6a74075c6
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Filesize
568KB
MD53acd878dcad8af0f84eae82ae801b654
SHA114931b89a4adada1d61e9aa3d437ce74045898ce
SHA256bf51b56b57a92f9c4593337428209f032afa0b4df571190f99e4368415e42a09
SHA512934131e128f7ed31b92e7340100b6a50d1fa40482c3ea8fbff91f21cc6718fc7cc66eaf235d5746d51ba22872a499c1f659c69477bf07f3d60ac1bb6a74075c6