Analysis
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max time kernel
148s -
max time network
174s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 18:42
Static task
static1
Behavioral task
behavioral1
Sample
000955642209.exe
Resource
win7-20220414-en
General
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Target
000955642209.exe
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Size
1.4MB
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MD5
15953f30af836493ea570004a8bb23e3
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SHA1
1b9fc988dab8fc2c5719cea2aa7f315b028c6e4d
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SHA256
68739817fe82121fcedf1092eca699f59941678ddd9622062c8d40c200bef82f
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SHA512
ab68fdc22da8cbd4e0ec90806a388cf7607aeb35260d01c2cdd3f09515b677f48b5bc27741b96aaba4e938826a0757b5d95653d34b1d104affe2e420b7dba2e2
Malware Config
Extracted
nanocore
1.2.2.0
185.140.53.12:1985
127.0.0.1:1985
1b68869e-dd8c-4eea-829f-d7272a505d3a
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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
2020-01-17T10:03:49.054089636Z
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bypass_user_account_control
true
- bypass_user_account_control_data
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clear_access_control
false
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clear_zone_identifier
false
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connect_delay
4000
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connection_port
1985
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default_group
kdott
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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
-
mutex
1b68869e-dd8c-4eea-829f-d7272a505d3a
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mutex_timeout
5000
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prevent_system_sleep
true
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primary_connection_host
185.140.53.12
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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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Drops startup file 1 IoCs
Processes:
000955642209.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\findstr.url 000955642209.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
MSBuild.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Subsystem = "C:\\Program Files (x86)\\WPA Subsystem\\wpass.exe" MSBuild.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
000955642209.exedescription pid process target process PID 1084 set thread context of 1896 1084 000955642209.exe MSBuild.exe -
Drops file in Program Files directory 2 IoCs
Processes:
MSBuild.exedescription ioc process File created C:\Program Files (x86)\WPA Subsystem\wpass.exe MSBuild.exe File opened for modification C:\Program Files (x86)\WPA Subsystem\wpass.exe MSBuild.exe -
Suspicious behavior: EnumeratesProcesses 15 IoCs
Processes:
MSBuild.exe000955642209.exepid process 1896 MSBuild.exe 1896 MSBuild.exe 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
MSBuild.exepid process 1896 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
MSBuild.exedescription pid process Token: SeDebugPrivilege 1896 MSBuild.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
Processes:
000955642209.exepid process 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
000955642209.exepid process 1084 000955642209.exe 1084 000955642209.exe 1084 000955642209.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
000955642209.exedescription pid process target process PID 1084 wrote to memory of 1896 1084 000955642209.exe MSBuild.exe PID 1084 wrote to memory of 1896 1084 000955642209.exe MSBuild.exe PID 1084 wrote to memory of 1896 1084 000955642209.exe MSBuild.exe PID 1084 wrote to memory of 1896 1084 000955642209.exe MSBuild.exe PID 1084 wrote to memory of 1896 1084 000955642209.exe MSBuild.exe PID 1084 wrote to memory of 1896 1084 000955642209.exe MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\000955642209.exe"C:\Users\Admin\AppData\Local\Temp\000955642209.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- 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\MSBuild.exe"C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\MSBuild.exe"2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1084-54-0x0000000075FC1000-0x0000000075FC3000-memory.dmpFilesize
8KB
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memory/1084-66-0x0000000001110000-0x0000000001176000-memory.dmpFilesize
408KB
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memory/1084-67-0x0000000002740000-0x00000000027A6000-memory.dmpFilesize
408KB
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memory/1896-55-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1896-57-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1896-62-0x000000000041E792-mapping.dmp
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memory/1896-63-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1896-64-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1896-68-0x0000000074220000-0x00000000747CB000-memory.dmpFilesize
5.7MB