Analysis
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max time kernel
120s -
max time network
116s -
platform
windows10-2004_x64 -
resource
win10v2004-20250129-en -
resource tags
arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system -
submitted
02/02/2025, 11:36
Behavioral task
behavioral1
Sample
890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe
Resource
win7-20240903-en
General
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Target
890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe
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Size
1.0MB
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MD5
6010fe76b2fbc1b56c68a3dc26178d80
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SHA1
33aeb837b408f67bc44e5cce8a227a034f1db46f
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SHA256
890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023
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SHA512
bdca43d3842b6b97a5289c2b344b325c62bcba8612711e7abb0b9dcb57d189f1a5b73ec892c51baacb5745af4edbc6555d034604a85f6723d5f20454c97a619f
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SSDEEP
24576:Jur9gkEPGcHHXYDYDa6naGhywpCjq7jUv7cF6kZ6YriDfZ49p50/o:Ur9gNGKXYD+naGEsBXUv66k8o4yp5wo
Malware Config
Extracted
nanocore
1.2.2.0
testwork.kozow.com:8906
bd6fc7b5-d48b-4e23-98f7-784bd3ef305c
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activate_away_mode
true
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backup_connection_host
testwork.kozow.com
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2019-02-16T16:47:25.218235636Z
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bypass_user_account_control
true
- bypass_user_account_control_data
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clear_access_control
true
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clear_zone_identifier
false
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connect_delay
4000
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connection_port
8906
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default_group
star
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enable_debug_mode
true
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gc_threshold
1.048576e+07
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keep_alive_timeout
30000
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keyboard_logging
false
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lan_timeout
2500
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max_packet_size
1.048576e+07
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mutex
bd6fc7b5-d48b-4e23-98f7-784bd3ef305c
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
testwork.kozow.com
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primary_dns_server
8.8.8.8
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request_elevation
true
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restart_delay
5000
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run_delay
0
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run_on_startup
true
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set_critical_process
true
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timeout_interval
5000
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use_custom_dns_server
false
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version
1.2.2.0
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wan_timeout
8000
Signatures
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Nanocore family
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Drops startup file 1 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PresentationHost.url 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe -
Checks whether UAC is enabled 1 TTPs 1 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegAsm.exe -
AutoIT Executable 12 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule behavioral2/memory/3720-14-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe behavioral2/memory/3720-17-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe behavioral2/memory/3720-22-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe behavioral2/memory/3720-23-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe behavioral2/memory/3720-24-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe behavioral2/memory/3720-25-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe behavioral2/memory/3720-26-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe behavioral2/memory/3720-27-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe behavioral2/memory/3720-28-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe behavioral2/memory/3720-29-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe behavioral2/memory/3720-30-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe behavioral2/memory/3720-31-0x00000000006F0000-0x00000000008A1000-memory.dmp autoit_exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3720 set thread context of 4712 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 90 -
resource yara_rule behavioral2/memory/3720-0-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-14-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-17-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-22-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-23-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-24-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-25-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-26-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-27-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-28-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-29-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-30-0x00000000006F0000-0x00000000008A1000-memory.dmp upx behavioral2/memory/3720-31-0x00000000006F0000-0x00000000008A1000-memory.dmp upx -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4712 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4712 RegAsm.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe -
Suspicious use of SendNotifyMessage 3 IoCs
pid Process 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 3720 wrote to memory of 4712 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 90 PID 3720 wrote to memory of 4712 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 90 PID 3720 wrote to memory of 4712 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 90 PID 3720 wrote to memory of 4712 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 90 PID 3720 wrote to memory of 4712 3720 890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe"C:\Users\Admin\AppData\Local\Temp\890fedd654acfe94753959001be10f70d4da82394165786bded620e5ef59f023N.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3720 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:4712
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