Analysis
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max time kernel
152s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20230221-en -
resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system -
submitted
21-03-2023 13:25
Static task
static1
Behavioral task
behavioral1
Sample
fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe
Resource
win7-20230220-en
General
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Target
fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe
-
Size
405KB
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MD5
27b0bbbcfc777cf7245a2ae4f9d01b69
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SHA1
7a7f499a9cb5994f1135cb5935c3f6843962f15f
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SHA256
fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf
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SHA512
9c69b9c103517ac1b93b59b4ff550225b09cef212d02dab7834fa6c63d75f7e05dc3f5f2a67810a6a8e83acf56e9af9aac3105f9736665f4a063d85d852a9d9e
-
SSDEEP
12288:dnXcypamQ4HucawiYJPhjV1VxoMmwldE:NHuc9iW71VxXlu
Malware Config
Extracted
nanocore
1.2.2.0
williamscomputer101.ddns.net:16554
91.193.75.135:16554
768970b2-01a6-4c33-a5ae-8582afdb6c49
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activate_away_mode
true
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backup_connection_host
91.193.75.135
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2022-11-30T13:00:18.988692336Z
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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
16554
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default_group
Billionare
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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
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
-
mutex
768970b2-01a6-4c33-a5ae-8582afdb6c49
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mutex_timeout
5000
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prevent_system_sleep
false
-
primary_connection_host
williamscomputer101.ddns.net
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primary_dns_server
8.8.8.8
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request_elevation
true
-
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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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
aspnet_compiler.exepowershell.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAT Service = "C:\\Program Files (x86)\\NAT Service\\natsvc.exe" aspnet_compiler.exe Set value (str) \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RZTHXHelper = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Recent\\RZTHX\\RZTHXHelper.exe" powershell.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exedescription pid process target process PID 4836 set thread context of 5012 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe -
Drops file in Program Files directory 2 IoCs
Processes:
aspnet_compiler.exedescription ioc process File created C:\Program Files (x86)\NAT Service\natsvc.exe aspnet_compiler.exe File opened for modification C:\Program Files (x86)\NAT Service\natsvc.exe aspnet_compiler.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
powershell.exefc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exeaspnet_compiler.exepid process 4668 powershell.exe 4668 powershell.exe 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe 5012 aspnet_compiler.exe 5012 aspnet_compiler.exe 5012 aspnet_compiler.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
aspnet_compiler.exepid process 5012 aspnet_compiler.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
powershell.exefc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exeaspnet_compiler.exedescription pid process Token: SeDebugPrivilege 4668 powershell.exe Token: SeDebugPrivilege 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe Token: SeDebugPrivilege 5012 aspnet_compiler.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exedescription pid process target process PID 4836 wrote to memory of 4668 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe powershell.exe PID 4836 wrote to memory of 4668 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe powershell.exe PID 4836 wrote to memory of 4668 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe powershell.exe PID 4836 wrote to memory of 3824 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 3824 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 3824 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 3644 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 3644 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 3644 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 5012 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 5012 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 5012 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 5012 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 5012 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 5012 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 5012 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe PID 4836 wrote to memory of 5012 4836 fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe aspnet_compiler.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe"C:\Users\Admin\AppData\Local\Temp\fc45e859218d968355dab61237025b551710f8329c1e50cf10342826222c21bf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Remove -ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'RZTHXHelper';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'RZTHXHelper' -Value '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\RZTHX\RZTHXHelper.exe"' -PropertyType 'String'2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"2⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_od2ovnwl.dfu.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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memory/4668-168-0x0000000005930000-0x000000000594E000-memory.dmpFilesize
120KB
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memory/4668-209-0x0000000007070000-0x0000000007092000-memory.dmpFilesize
136KB
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memory/4668-208-0x0000000007000000-0x0000000007008000-memory.dmpFilesize
32KB
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memory/4668-207-0x0000000007020000-0x000000000703A000-memory.dmpFilesize
104KB
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memory/4668-206-0x0000000006F10000-0x0000000006F1E000-memory.dmpFilesize
56KB
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memory/4668-205-0x0000000006F50000-0x0000000006FE6000-memory.dmpFilesize
600KB
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memory/4668-204-0x0000000006D40000-0x0000000006D4A000-memory.dmpFilesize
40KB
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memory/4668-142-0x00000000020C0000-0x00000000020F6000-memory.dmpFilesize
216KB
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memory/4668-143-0x0000000004B40000-0x0000000005168000-memory.dmpFilesize
6.2MB
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memory/4668-144-0x00000000007A0000-0x00000000007B0000-memory.dmpFilesize
64KB
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memory/4668-145-0x00000000007A0000-0x00000000007B0000-memory.dmpFilesize
64KB
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memory/4668-146-0x0000000004B00000-0x0000000004B22000-memory.dmpFilesize
136KB
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memory/4668-147-0x00000000052E0000-0x0000000005346000-memory.dmpFilesize
408KB
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memory/4668-203-0x000000007FBD0000-0x000000007FBE0000-memory.dmpFilesize
64KB
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memory/4668-153-0x00000000053C0000-0x0000000005426000-memory.dmpFilesize
408KB
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memory/4668-202-0x0000000006CD0000-0x0000000006CEA000-memory.dmpFilesize
104KB
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memory/4668-201-0x0000000007320000-0x000000000799A000-memory.dmpFilesize
6.5MB
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memory/4668-200-0x0000000005F80000-0x0000000005F9E000-memory.dmpFilesize
120KB
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memory/4668-190-0x0000000070910000-0x000000007095C000-memory.dmpFilesize
304KB
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memory/4668-189-0x0000000005FA0000-0x0000000005FD2000-memory.dmpFilesize
200KB
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memory/4668-188-0x00000000007A0000-0x00000000007B0000-memory.dmpFilesize
64KB
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memory/4836-161-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-136-0x0000000004C30000-0x0000000004C40000-memory.dmpFilesize
64KB
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memory/4836-135-0x0000000007A30000-0x0000000007FD4000-memory.dmpFilesize
5.6MB
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memory/4836-163-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-176-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-178-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-174-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-182-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-167-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-172-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-137-0x0000000007480000-0x0000000007512000-memory.dmpFilesize
584KB
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memory/4836-165-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-158-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-180-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-133-0x0000000000300000-0x0000000000366000-memory.dmpFilesize
408KB
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memory/4836-159-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/4836-134-0x00000000073E0000-0x000000000747C000-memory.dmpFilesize
624KB
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memory/4836-140-0x0000000004C30000-0x0000000004C40000-memory.dmpFilesize
64KB
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memory/4836-139-0x0000000007610000-0x0000000007666000-memory.dmpFilesize
344KB
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memory/4836-138-0x0000000007340000-0x000000000734A000-memory.dmpFilesize
40KB
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memory/4836-170-0x0000000008750000-0x0000000008765000-memory.dmpFilesize
84KB
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memory/5012-212-0x0000000004C70000-0x0000000004C80000-memory.dmpFilesize
64KB
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memory/5012-187-0x0000000004C70000-0x0000000004C80000-memory.dmpFilesize
64KB
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memory/5012-183-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB