Analysis
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max time kernel
120s -
max time network
117s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
26/01/2025, 23:45
General
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Target
bc038f3b717a20296d62ecd0f1991a7252539b04ebd2ce393f33e7de8852d6eaN.exe
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Size
1.0MB
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MD5
7a20e0750256d84b2400aae620cc4790
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SHA1
364b6ea02d12eaa1d9fb067f19dc722f37e55dd4
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SHA256
bc038f3b717a20296d62ecd0f1991a7252539b04ebd2ce393f33e7de8852d6ea
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SHA512
b537a0213aa9ef4772d5e93b039ed60b7e3c5b5539a4213b8e83f0f595263646362faf3a854e069a606b6e16f26ad61c918389e0fa5d371a3935c9e0681b7003
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SSDEEP
24576:Jur9gkEPGcHHXYDYDa6naGhywpCjq7jUv7cF6kZ6YriDfZ49p50/A:Ur9gNGKXYD+naGEsBXUv66k8o4yp5wA
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
NanoCore is a remote access tool (RAT) with a variety of capabilities.
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Nanocore family
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Drops startup file 1 IoCs
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Checks whether UAC is enabled 1 TTPs 1 IoCs
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AutoIT Executable 13 IoCs
AutoIT scripts compiled to PE executables.
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Suspicious use of SetThreadContext 1 IoCs
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UPX packed file 14 IoCs
Detects executables packed with UPX/modified UPX open source packer.
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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.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of FindShellTrayWindow 3 IoCs
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Suspicious use of SendNotifyMessage 3 IoCs
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Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\bc038f3b717a20296d62ecd0f1991a7252539b04ebd2ce393f33e7de8852d6eaN.exe"C:\Users\Admin\AppData\Local\Temp\bc038f3b717a20296d62ecd0f1991a7252539b04ebd2ce393f33e7de8852d6eaN.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
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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
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
5.7MB
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Filesize
5.7MB
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Filesize
224KB
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Filesize
4KB
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Filesize
5.7MB
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Filesize
5.7MB
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Filesize
4KB
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Filesize
4KB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
4KB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
1.7MB