Analysis
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max time kernel
144s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
10-07-2024 15:09
Static task
static1
Behavioral task
behavioral1
Sample
1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe
Resource
win7-20240705-en
General
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Target
1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe
-
Size
3.5MB
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MD5
540df7784dd16658486dc2caf73ca2a5
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SHA1
e203fbc4c4fc05def6784953933dc15c7495f96d
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SHA256
1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4
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SHA512
e41dcf7c66ba14b39423863975d9cf91e008f67bff103035dd34c6acf113abd84fdb4a72751a060f63852d5a34a17db5f95d77a648515cee15f787da3a0e2cf9
-
SSDEEP
49152:6Ob699GhOeeYrHhxNg0Dobuh9CYFQqgFClfN8SIP1aJ5+BEh:69vYrdnHSSI4JYBEh
Malware Config
Extracted
nanocore
1.2.2.0
arkseven7002.ddns.net:7727
10a66da6-234d-4e15-acda-574830a08fca
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activate_away_mode
true
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backup_connection_host
arkseven7002.ddns.net
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2024-04-18T01:03:25.467183836Z
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bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
false
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clear_zone_identifier
true
-
connect_delay
4000
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connection_port
7727
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default_group
BLESSED BOTS
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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
-
max_packet_size
1.048576e+07
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mutex
10a66da6-234d-4e15-acda-574830a08fca
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mutex_timeout
5000
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prevent_system_sleep
true
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primary_connection_host
arkseven7002.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
-
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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Disables RegEdit via registry modification 1 IoCs
Processes:
1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
regsvcs.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe" regsvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exedescription pid process target process PID 1988 set thread context of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe -
Drops file in Program Files directory 2 IoCs
Processes:
regsvcs.exedescription ioc process File created C:\Program Files (x86)\TCP Subsystem\tcpss.exe regsvcs.exe File opened for modification C:\Program Files (x86)\TCP Subsystem\tcpss.exe regsvcs.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
regsvcs.exepid process 3032 regsvcs.exe 3032 regsvcs.exe 3032 regsvcs.exe 3032 regsvcs.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
regsvcs.exepid process 3032 regsvcs.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
regsvcs.exedescription pid process Token: SeDebugPrivilege 3032 regsvcs.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exedescription pid process target process PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe PID 1988 wrote to memory of 3032 1988 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe regsvcs.exe -
System policy modification 1 TTPs 2 IoCs
Processes:
1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableTaskMgr = "1" 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe"C:\Users\Admin\AppData\Local\Temp\1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe"1⤵
- Disables RegEdit via registry modification
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.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 v13
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/3032-0-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/3032-4-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/3032-2-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/3032-5-0x000000007482E000-0x000000007482F000-memory.dmpFilesize
4KB
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memory/3032-6-0x0000000074820000-0x0000000074F0E000-memory.dmpFilesize
6.9MB
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memory/3032-9-0x0000000000480000-0x000000000048A000-memory.dmpFilesize
40KB
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memory/3032-10-0x0000000000490000-0x00000000004AE000-memory.dmpFilesize
120KB
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memory/3032-11-0x0000000000830000-0x000000000083A000-memory.dmpFilesize
40KB
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memory/3032-15-0x0000000000BF0000-0x0000000000C0A000-memory.dmpFilesize
104KB
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memory/3032-14-0x0000000000A70000-0x0000000000A82000-memory.dmpFilesize
72KB
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memory/3032-16-0x0000000000C10000-0x0000000000C1E000-memory.dmpFilesize
56KB
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memory/3032-18-0x0000000000C80000-0x0000000000C8E000-memory.dmpFilesize
56KB
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memory/3032-17-0x0000000000C30000-0x0000000000C42000-memory.dmpFilesize
72KB
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memory/3032-20-0x0000000002130000-0x0000000002144000-memory.dmpFilesize
80KB
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memory/3032-19-0x0000000002120000-0x000000000212C000-memory.dmpFilesize
48KB
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memory/3032-21-0x0000000002140000-0x0000000002150000-memory.dmpFilesize
64KB
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memory/3032-22-0x0000000002150000-0x0000000002164000-memory.dmpFilesize
80KB
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memory/3032-23-0x0000000002160000-0x000000000216E000-memory.dmpFilesize
56KB
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memory/3032-24-0x00000000043A0000-0x00000000043CE000-memory.dmpFilesize
184KB
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memory/3032-25-0x0000000004610000-0x0000000004624000-memory.dmpFilesize
80KB
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memory/3032-31-0x000000007482E000-0x000000007482F000-memory.dmpFilesize
4KB
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memory/3032-32-0x0000000074820000-0x0000000074F0E000-memory.dmpFilesize
6.9MB