Analysis
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max time kernel
149s -
max time network
139s -
platform
windows7_x64 -
resource
win7 -
submitted
24-06-2020 14:56
Static task
static1
Behavioral task
behavioral1
Sample
8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe
Resource
win7
General
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Target
8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe
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Size
1.3MB
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MD5
75b1ea598db63322ecf531e7053b4a61
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SHA1
f8b96455a4a74d7eb749d33cd6a9e0c7e0c2691c
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SHA256
8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b
-
SHA512
8287ff99d721c834a20c70c32c26b45b91b02a00f5c1d380009b8af5b76ab9c24b91b22eff1f7c56fae22c7f718bab0ee38133e64b987e676d1075df2554b8b8
Malware Config
Extracted
nanocore
1.2.2.0
elvis4.ddns.net:7662
fae0afe4-3bae-4efb-b490-d55a5de6dea4
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activate_away_mode
true
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backup_connection_host
127.0.0.1
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2020-03-15T01:30:33.486781236Z
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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
7662
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default_group
june
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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
-
keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
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mutex
fae0afe4-3bae-4efb-b490-d55a5de6dea4
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mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
elvis4.ddns.net
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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
false
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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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Suspicious use of FindShellTrayWindow 3 IoCs
Processes:
8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exepid process 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exedescription pid process target process PID 824 wrote to memory of 1224 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe MSBuild.exe PID 824 wrote to memory of 1224 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe MSBuild.exe PID 824 wrote to memory of 1224 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe MSBuild.exe PID 824 wrote to memory of 1224 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe MSBuild.exe PID 824 wrote to memory of 1224 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe MSBuild.exe PID 824 wrote to memory of 1224 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
MSBuild.exedescription pid process Token: SeDebugPrivilege 1224 MSBuild.exe -
Drops startup file 1 IoCs
Processes:
8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\igfxEM.url 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe -
Processes:
MSBuild.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA MSBuild.exe -
Drops file in Program Files directory 2 IoCs
Processes:
MSBuild.exedescription ioc process File opened for modification C:\Program Files (x86)\WAN Subsystem\wanss.exe MSBuild.exe File created C:\Program Files (x86)\WAN Subsystem\wanss.exe MSBuild.exe -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exepid process 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exedescription pid process target process PID 824 set thread context of 1224 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe MSBuild.exe -
Suspicious behavior: EnumeratesProcesses 16 IoCs
Processes:
MSBuild.exe8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exepid process 1224 MSBuild.exe 1224 MSBuild.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe 824 8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
MSBuild.exepid process 1224 MSBuild.exe -
Adds Run entry to start application 2 TTPs 1 IoCs
Processes:
MSBuild.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WAN Subsystem = "C:\\Program Files (x86)\\WAN Subsystem\\wanss.exe" MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe"C:\Users\Admin\AppData\Local\Temp\8be48a6508ced97bdd4d41459ef5e858b505b150fd3ea2d00229e6a72bb9a36b.exe"1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
- Drops startup file
- Suspicious use of SendNotifyMessage
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\MSBuild.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Adds Run entry to start application