Analysis
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max time kernel
61s -
max time network
76s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
20/02/2024, 02:34
Behavioral task
behavioral1
Sample
Nighty.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
Nighty.exe
Resource
win10v2004-20231222-en
Behavioral task
behavioral3
Sample
Nighty.pyc
Resource
win7-20231129-en
Behavioral task
behavioral4
Sample
Nighty.pyc
Resource
win10v2004-20231215-en
General
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Target
Nighty.pyc
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Size
2.4MB
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MD5
6bf475ec68cda6fe15458601e1e54cac
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SHA1
94487d0e8acb99cb70e8a582c6b9a5112ebbfef7
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SHA256
b99a622908a8fa8117e2bc8b15e168572befa29bb863c9c25a9e8fdf0e50ec35
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SHA512
09a38dc7fab45a2a6171746941722e49e51cbf3dd483c1283ff3e020e9603bb2b5a7c7cc6d1644e2d150d39e7824fef139423dbdf1d5250e11196a362bd4adca
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SSDEEP
49152:wPJLuY+oiMXC13NXFhnJtAfXJqTLVfUQW9dehdQzqqkDgUrqzOd2FXP:0uYyhFhnJtAfXJKYoQDa+f1P
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000_Classes\Local Settings cmd.exe Key created \REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000_Classes\Local Settings OpenWith.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3424 NOTEPAD.EXE -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1364 OpenWith.exe -
Suspicious use of SetWindowsHookEx 47 IoCs
pid Process 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe 1364 OpenWith.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1364 wrote to memory of 3424 1364 OpenWith.exe 86 PID 1364 wrote to memory of 3424 1364 OpenWith.exe 86
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\Nighty.pyc1⤵
- Modifies registry class
PID:1652
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1364 -
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\Nighty.pyc2⤵
- Opens file in notepad (likely ransom note)
PID:3424
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