Analysis
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max time kernel
193s -
max time network
213s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
25-06-2022 06:03
Static task
static1
Behavioral task
behavioral1
Sample
3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe
Resource
win7-20220414-en
General
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Target
3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe
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Size
840KB
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MD5
03d14d25935aabae662a09db5146ea35
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SHA1
e75ffa7ef6be023be366f95dedffff934e890f06
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SHA256
3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0
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SHA512
3f1cd8d0032f49a5a724479f45c3767910cfb9196aeec051a3e162af99631814cfb7fa9729274c091d6ca49a3db87a3f53d3d01eb72eb573f771eaca5617f61a
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\pjifuych.exe family_kutaki C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pjifuych.exe family_kutaki -
Executes dropped EXE 1 IoCs
Processes:
pjifuych.exepid process 4972 pjifuych.exe -
Drops startup file 2 IoCs
Processes:
3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pjifuych.exe 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pjifuych.exe 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
pjifuych.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum pjifuych.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 pjifuych.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:
3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exepjifuych.exepid process 3096 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe 3096 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe 3096 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe 4972 pjifuych.exe 4972 pjifuych.exe 4972 pjifuych.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exedescription pid process target process PID 3096 wrote to memory of 4792 3096 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe cmd.exe PID 3096 wrote to memory of 4792 3096 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe cmd.exe PID 3096 wrote to memory of 4792 3096 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe cmd.exe PID 3096 wrote to memory of 4972 3096 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe pjifuych.exe PID 3096 wrote to memory of 4972 3096 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe pjifuych.exe PID 3096 wrote to memory of 4972 3096 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe pjifuych.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe"C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe"1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3096 -
C:\Windows\SysWOW64\cmd.execmd.exe /c C:\Users\Admin\AppData\Local\Temp\2⤵PID:4792
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pjifuych.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pjifuych.exe"2⤵
- Executes dropped EXE
- Maps connected drives based on registry
- Suspicious use of SetWindowsHookEx
PID:4972
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
840KB
MD503d14d25935aabae662a09db5146ea35
SHA1e75ffa7ef6be023be366f95dedffff934e890f06
SHA2563a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0
SHA5123f1cd8d0032f49a5a724479f45c3767910cfb9196aeec051a3e162af99631814cfb7fa9729274c091d6ca49a3db87a3f53d3d01eb72eb573f771eaca5617f61a
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Filesize
840KB
MD503d14d25935aabae662a09db5146ea35
SHA1e75ffa7ef6be023be366f95dedffff934e890f06
SHA2563a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0
SHA5123f1cd8d0032f49a5a724479f45c3767910cfb9196aeec051a3e162af99631814cfb7fa9729274c091d6ca49a3db87a3f53d3d01eb72eb573f771eaca5617f61a