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Analysis
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max time kernel
151s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
29/10/2022, 23:59
Static task
static1
Behavioral task
behavioral1
Sample
a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe
Resource
win7-20220901-en
windows7-x64
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
11 signatures
150 seconds
General
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Target
a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe
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Size
144KB
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MD5
559922053a6b563aaaa46e8f096702aa
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SHA1
fd9646e886cbe6202538551a1de104b2f84dae71
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SHA256
a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b
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SHA512
d83389a3db888109f0acfe428f08a9dfb8a7e8a4dc6adec97c426f32080ff1e180f7bda6df3312bd51c49dcf623b824beebc2356aecbb7780caf3172376765f0
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SSDEEP
1536:K7QWlrZm72VWphZarM3mSWAcJxzAHs3a4x7DWnPigDUbHiMU6bbmNb:KLlNAAmmSWTAsq4x7inPNUbHiMU6bSNb
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" nctom.exe -
Executes dropped EXE 2 IoCs
pid Process 4292 nctom.exe 1884 nctom.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe -
Adds Run key to start application 2 TTPs 28 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /c" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /x" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /h" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /z" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /n" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /a" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /d" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /u" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /g" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /f" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /b" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /g" a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /j" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /s" nctom.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /m" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /k" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /o" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /v" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /i" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /q" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /r" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /w" nctom.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /y" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /p" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /t" nctom.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nctom = "C:\\Users\\Admin\\nctom.exe /e" nctom.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum nctom.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 nctom.exe -
Drops autorun.inf file 1 TTPs 1 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File opened for modification C:\Users\Admin\c\autorun.inf nctom.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1580 set thread context of 4236 1580 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 88 PID 4292 set thread context of 1884 4292 nctom.exe 94 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4236 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 4236 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe 1884 nctom.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 1580 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 4236 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 4292 nctom.exe 1884 nctom.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 1580 wrote to memory of 4236 1580 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 88 PID 1580 wrote to memory of 4236 1580 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 88 PID 1580 wrote to memory of 4236 1580 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 88 PID 1580 wrote to memory of 4236 1580 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 88 PID 1580 wrote to memory of 4236 1580 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 88 PID 1580 wrote to memory of 4236 1580 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 88 PID 1580 wrote to memory of 4236 1580 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 88 PID 1580 wrote to memory of 4236 1580 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 88 PID 1580 wrote to memory of 4236 1580 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 88 PID 4236 wrote to memory of 4292 4236 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 92 PID 4236 wrote to memory of 4292 4236 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 92 PID 4236 wrote to memory of 4292 4236 a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe 92 PID 4292 wrote to memory of 1884 4292 nctom.exe 94 PID 4292 wrote to memory of 1884 4292 nctom.exe 94 PID 4292 wrote to memory of 1884 4292 nctom.exe 94 PID 4292 wrote to memory of 1884 4292 nctom.exe 94 PID 4292 wrote to memory of 1884 4292 nctom.exe 94 PID 4292 wrote to memory of 1884 4292 nctom.exe 94 PID 4292 wrote to memory of 1884 4292 nctom.exe 94 PID 4292 wrote to memory of 1884 4292 nctom.exe 94 PID 4292 wrote to memory of 1884 4292 nctom.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe"C:\Users\Admin\AppData\Local\Temp\a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1580 -
C:\Users\Admin\AppData\Local\Temp\a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b.exe722⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4236 -
C:\Users\Admin\nctom.exe"C:\Users\Admin\nctom.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4292 -
C:\Users\Admin\nctom.exe724⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops autorun.inf file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1884
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
144KB
MD5559922053a6b563aaaa46e8f096702aa
SHA1fd9646e886cbe6202538551a1de104b2f84dae71
SHA256a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b
SHA512d83389a3db888109f0acfe428f08a9dfb8a7e8a4dc6adec97c426f32080ff1e180f7bda6df3312bd51c49dcf623b824beebc2356aecbb7780caf3172376765f0
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Filesize
144KB
MD5559922053a6b563aaaa46e8f096702aa
SHA1fd9646e886cbe6202538551a1de104b2f84dae71
SHA256a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b
SHA512d83389a3db888109f0acfe428f08a9dfb8a7e8a4dc6adec97c426f32080ff1e180f7bda6df3312bd51c49dcf623b824beebc2356aecbb7780caf3172376765f0
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Filesize
144KB
MD5559922053a6b563aaaa46e8f096702aa
SHA1fd9646e886cbe6202538551a1de104b2f84dae71
SHA256a29540cfd504d03d7c0d8da4475220864ff2b0231d96643a4573d80693fae06b
SHA512d83389a3db888109f0acfe428f08a9dfb8a7e8a4dc6adec97c426f32080ff1e180f7bda6df3312bd51c49dcf623b824beebc2356aecbb7780caf3172376765f0