Analysis
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max time kernel
123s -
max time network
159s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
26/12/2023, 02:03
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
4b539b0ea7ba4b59529d41275e8a97ee.exe
Resource
win7-20231129-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
4b539b0ea7ba4b59529d41275e8a97ee.exe
Resource
win10v2004-20231215-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
4b539b0ea7ba4b59529d41275e8a97ee.exe
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Size
96KB
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MD5
4b539b0ea7ba4b59529d41275e8a97ee
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SHA1
975e1f67cefa0f0014b61392269a7b285abc835f
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SHA256
43c9ee0e24b1f13015a3a6a4deb843d03d45b47d1ffdb7dc864f5d2188200f03
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SHA512
5c192f1f81663320dfea5831cf438db3e69489068df3bbf3abaf9703ad985283eb69e1ebb4dc711f8b88dd3ac69f00fc6de84217d263a673276dea91fecd778f
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SSDEEP
1536:2QPH+8MK1dGW3KuXDNSj6Jcv8gjhfFj2PzR/jG3qDP:NvqK3GUKAJgjw/nD
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-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 4b539b0ea7ba4b59529d41275e8a97ee.exe Set value (int) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" fiefoi.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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation 4b539b0ea7ba4b59529d41275e8a97ee.exe -
Executes dropped EXE 1 IoCs
pid Process 3652 fiefoi.exe -
Adds Run key to start application 2 TTPs 27 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /i" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /a" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /v" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /t" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /f" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /n" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /g" 4b539b0ea7ba4b59529d41275e8a97ee.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /o" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /y" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /j" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /x" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /c" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /h" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /w" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /b" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /p" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /q" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /s" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /e" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /k" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /z" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /r" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /d" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /m" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /l" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /u" fiefoi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiefoi = "C:\\Users\\Admin\\fiefoi.exe /g" fiefoi.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 540 4b539b0ea7ba4b59529d41275e8a97ee.exe 540 4b539b0ea7ba4b59529d41275e8a97ee.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe 3652 fiefoi.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 540 4b539b0ea7ba4b59529d41275e8a97ee.exe 3652 fiefoi.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 540 wrote to memory of 3652 540 4b539b0ea7ba4b59529d41275e8a97ee.exe 95 PID 540 wrote to memory of 3652 540 4b539b0ea7ba4b59529d41275e8a97ee.exe 95 PID 540 wrote to memory of 3652 540 4b539b0ea7ba4b59529d41275e8a97ee.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\4b539b0ea7ba4b59529d41275e8a97ee.exe"C:\Users\Admin\AppData\Local\Temp\4b539b0ea7ba4b59529d41275e8a97ee.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:540 -
C:\Users\Admin\fiefoi.exe"C:\Users\Admin\fiefoi.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:3652
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
96KB
MD519a3737fa9f1048da7c831c3831380f3
SHA1ee1c0bd4e79a34efb9c65a411500c729816e3ff1
SHA2564fc139a0966a7a74c48cb4497f872ab699f8c3f65bb15c729a7625e64f47c23a
SHA5122d2c96b9a77e6ef16a5c5e2fffd6730ceee8437f1b1370404a4f9caedcaba92508fed98baa4c0283d5002c8fa6d3f51519e5a74f5d749e183bdc951f67f6342a