Analysis
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max time kernel
118s -
max time network
158s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
05-11-2024 02:29
Static task
static1
Behavioral task
behavioral1
Sample
2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe
Resource
win7-20240903-en
General
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Target
2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe
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Size
720KB
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MD5
782965f857a2c2dbc179b7e016386f61
-
SHA1
3d16a97e2733daa4c2313035e134e763497bb948
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SHA256
2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a
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SHA512
a1c98f6c20b9b5692069ac79d43ed06481faf963da10ad24b83bf4d76c44db2fca87e5237205be1767b83781ea63e0d8993dfc86bb08743e6756482771e01272
-
SSDEEP
12288:2lx+dhZfm1NjNJrhCByke+7/wrhQUKLxfguWTe/OSzT7Ad9hg7pzm9owtSE3:w+d/f+Njt+7IrylxfguWTelK39oL
Malware Config
Extracted
nanocore
1.2.2.0
66.63.187.113:1664
a376f716-2f77-4943-a431-3a3bcb53b7c0
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activate_away_mode
true
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backup_connection_host
66.63.187.113
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backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2024-08-05T03:49:33.827385136Z
-
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
1664
-
default_group
CAT
-
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
a376f716-2f77-4943-a431-3a3bcb53b7c0
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
66.63.187.113
-
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
-
use_custom_dns_server
false
-
version
1.2.2.0
-
wan_timeout
8000
Signatures
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Nanocore family
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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:
2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exedescription ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ISS Host = "C:\\Program Files (x86)\\ISS Host\\isshost.exe" 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe -
Processes:
2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exedescription ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exedescription pid Process procid_target PID 1708 set thread context of 2840 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 33 -
Drops file in Program Files directory 2 IoCs
Processes:
2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exedescription ioc Process File created C:\Program Files (x86)\ISS Host\isshost.exe 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe File opened for modification C:\Program Files (x86)\ISS Host\isshost.exe 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exepowershell.exeschtasks.exeschtasks.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe -
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 1880 schtasks.exe 2180 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
Processes:
powershell.exe2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exepid Process 2808 powershell.exe 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exepid Process 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exe2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exedescription pid Process Token: SeDebugPrivilege 2808 powershell.exe Token: SeDebugPrivilege 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exedescription pid Process procid_target PID 1708 wrote to memory of 2808 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 31 PID 1708 wrote to memory of 2808 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 31 PID 1708 wrote to memory of 2808 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 31 PID 1708 wrote to memory of 2808 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 31 PID 1708 wrote to memory of 2840 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 33 PID 1708 wrote to memory of 2840 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 33 PID 1708 wrote to memory of 2840 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 33 PID 1708 wrote to memory of 2840 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 33 PID 1708 wrote to memory of 2840 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 33 PID 1708 wrote to memory of 2840 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 33 PID 1708 wrote to memory of 2840 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 33 PID 1708 wrote to memory of 2840 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 33 PID 1708 wrote to memory of 2840 1708 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 33 PID 2840 wrote to memory of 1880 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 34 PID 2840 wrote to memory of 1880 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 34 PID 2840 wrote to memory of 1880 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 34 PID 2840 wrote to memory of 1880 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 34 PID 2840 wrote to memory of 2180 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 36 PID 2840 wrote to memory of 2180 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 36 PID 2840 wrote to memory of 2180 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 36 PID 2840 wrote to memory of 2180 2840 2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe 36
Processes
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C:\Users\Admin\AppData\Local\Temp\2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe"C:\Users\Admin\AppData\Local\Temp\2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1708 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2808
-
-
C:\Users\Admin\AppData\Local\Temp\2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe"C:\Users\Admin\AppData\Local\Temp\2634af4fb7d0c056e1f96809592bfcd3ee9f3fedf0ad52f9340b67d3b67d9f0a.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2840 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "ISS Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF90E.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1880
-
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "ISS Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFC4A.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2180
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-
Network
MITRE ATT&CK Enterprise v15
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
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD5df4d0e9c3f264d12150e22239d449c59
SHA190649a3bb8a2853535b8944966adf577192f6698
SHA2562d2ad709a852677b5174d6831d875fd009a38a7df6d8e4b17b97beff2a3d5550
SHA51259110fb883f45870a5e482f1c3c0344707cd9466e56867818fa0c652f8faa145fa423d34b0ee36a4457cd142b94acc693b1a9ed8f853bccb39dc08826797a469
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Filesize
1KB
MD53d1580c0395f6de62659467f5b7f1acf
SHA18e73a3885896cecca7ff799a272fc9ddfe06ea96
SHA2566f40196c42a171f24a3e16edeca664cdc5a2f7c150d468255b0e14ab10a2b714
SHA5127637c0d9b03227dffcb00a68d97ddce60bfc40ca0f8a7a4bbd700ea56be6d570908511dea5cab9f609a7da2e558e5298c482fd1e330af085f9c52867d5a847ea