Analysis
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max time kernel
146s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
10-07-2024 02:35
Static task
static1
Behavioral task
behavioral1
Sample
f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe
Resource
win7-20240705-en
General
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Target
f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe
-
Size
3.3MB
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MD5
b5cb2e972a0d15d113133d55d8fa9494
-
SHA1
cc307c7ccb5fc8ddb4aabfff18527804aeb1c077
-
SHA256
f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd
-
SHA512
1370f52424d7635783cefda3333cce4efdbf2397b01ff251c6c8e4dd2bc32f5471211634da8c1fc271a4a83c2c49570ff8b5363838507d9b4b8f58290748120a
-
SSDEEP
12288:diy5BPaY1yG1wsKYeuELZ41ypSP+j/hfdeChoB3Lopc6iH7zd:n5BPaIyPB/Fqy4Gj/Xrhyoc6iHV
Malware Config
Extracted
nanocore
1.2.2.0
3654.ddns.net:3654
10.9.0.118:3654
08b979e3-5178-4508-8fee-8691cecb4a52
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activate_away_mode
true
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backup_connection_host
10.9.0.118
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backup_dns_server
8.8.4.4
-
buffer_size
65535
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build_time
2024-04-20T00:01:40.250540136Z
-
bypass_user_account_control
false
-
bypass_user_account_control_data
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clear_access_control
true
-
clear_zone_identifier
false
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connect_delay
4000
-
connection_port
3654
-
default_group
Nan
-
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
08b979e3-5178-4508-8fee-8691cecb4a52
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
3654.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
-
wan_timeout
8000
Signatures
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Processes:
f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe -
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
jsc.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe" jsc.exe -
Processes:
f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exedescription pid process target process PID 3052 set thread context of 2632 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe jsc.exe -
Drops file in Program Files directory 2 IoCs
Processes:
jsc.exedescription ioc process File created C:\Program Files (x86)\TCP Subsystem\tcpss.exe jsc.exe File opened for modification C:\Program Files (x86)\TCP Subsystem\tcpss.exe jsc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 2912 schtasks.exe 2592 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exejsc.exepid process 2336 powershell.exe 2632 jsc.exe 2632 jsc.exe 2632 jsc.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
jsc.exepid process 2632 jsc.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exejsc.exedescription pid process Token: SeDebugPrivilege 2336 powershell.exe Token: SeDebugPrivilege 2632 jsc.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exejsc.exedescription pid process target process PID 3052 wrote to memory of 2336 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe powershell.exe PID 3052 wrote to memory of 2336 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe powershell.exe PID 3052 wrote to memory of 2336 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe powershell.exe PID 3052 wrote to memory of 2632 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe jsc.exe PID 3052 wrote to memory of 2632 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe jsc.exe PID 3052 wrote to memory of 2632 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe jsc.exe PID 3052 wrote to memory of 2632 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe jsc.exe PID 3052 wrote to memory of 2632 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe jsc.exe PID 3052 wrote to memory of 2632 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe jsc.exe PID 3052 wrote to memory of 2632 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe jsc.exe PID 3052 wrote to memory of 2632 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe jsc.exe PID 3052 wrote to memory of 2632 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe jsc.exe PID 3052 wrote to memory of 2696 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe WerFault.exe PID 3052 wrote to memory of 2696 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe WerFault.exe PID 3052 wrote to memory of 2696 3052 f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe WerFault.exe PID 2632 wrote to memory of 2912 2632 jsc.exe schtasks.exe PID 2632 wrote to memory of 2912 2632 jsc.exe schtasks.exe PID 2632 wrote to memory of 2912 2632 jsc.exe schtasks.exe PID 2632 wrote to memory of 2912 2632 jsc.exe schtasks.exe PID 2632 wrote to memory of 2592 2632 jsc.exe schtasks.exe PID 2632 wrote to memory of 2592 2632 jsc.exe schtasks.exe PID 2632 wrote to memory of 2592 2632 jsc.exe schtasks.exe PID 2632 wrote to memory of 2592 2632 jsc.exe schtasks.exe -
System policy modification 1 TTPs 1 IoCs
Processes:
f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe"C:\Users\Admin\AppData\Local\Temp\f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe"1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe" -Force2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "TCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp474.tmp"3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "TCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp61A.tmp"3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 3052 -s 8522⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp474.tmpFilesize
1KB
MD50d45deac49eab9381944618d06d09e44
SHA1e0e670e6d29c54731a367644df22352c7143757d
SHA256062a2cca5989f27e0e9148dffe044d22effcdb205e96da2dbfba6bc423576b23
SHA5124d2912efe7d142361fbbde7fde846c13858481b52d295fd921e7978ad638d5ccdb4e51403ca27f2d52be1d205b0496a1778cc2c48891cf8f45f70b130c1788b1
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C:\Users\Admin\AppData\Local\Temp\tmp61A.tmpFilesize
1KB
MD54b7ef560289c0f62d0baf6f14f48a57a
SHA18331acb90dde588aa3196919f6e847f398fd06d1
SHA256062844155306130d6fafc4fe10ac9e5ddd2ed462532b729c50cdc979c0d83207
SHA512ecaa27c4b703d95f9f9b37d8c339982970482e7dab968c2010e0aa644bbfa31973111aafb827565af30c423d1d14e4ff997ec149614e713ff7ef3456894d02d8
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memory/2336-23-0x0000000001F80000-0x0000000001F88000-memory.dmpFilesize
32KB
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memory/2336-9-0x0000000002DD0000-0x0000000002E50000-memory.dmpFilesize
512KB
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memory/2336-22-0x000000001B790000-0x000000001BA72000-memory.dmpFilesize
2.9MB
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memory/2632-20-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2632-31-0x0000000000370000-0x000000000037A000-memory.dmpFilesize
40KB
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memory/2632-10-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2632-16-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
-
memory/2632-14-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2632-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmpFilesize
4KB
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memory/2632-19-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2632-21-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
-
memory/2632-33-0x0000000000380000-0x000000000038A000-memory.dmpFilesize
40KB
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memory/2632-32-0x00000000003D0000-0x00000000003EE000-memory.dmpFilesize
120KB
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memory/2632-12-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/3052-2-0x000007FEF4DE0000-0x000007FEF57CC000-memory.dmpFilesize
9.9MB
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memory/3052-1-0x0000000000CB0000-0x0000000000CBC000-memory.dmpFilesize
48KB
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memory/3052-0-0x000007FEF4DE3000-0x000007FEF4DE4000-memory.dmpFilesize
4KB
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memory/3052-4-0x0000000000AB0000-0x0000000000B3C000-memory.dmpFilesize
560KB
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memory/3052-3-0x000000001B990000-0x000000001B99C000-memory.dmpFilesize
48KB
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memory/3052-34-0x000007FEF4DE3000-0x000007FEF4DE4000-memory.dmpFilesize
4KB
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memory/3052-35-0x000007FEF4DE0000-0x000007FEF57CC000-memory.dmpFilesize
9.9MB