Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
25/03/2024, 17:47
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
de97d2d68e5e21dc1c726eca2a13cd59.exe
Resource
win7-20240220-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
de97d2d68e5e21dc1c726eca2a13cd59.exe
Resource
win10v2004-20240226-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
de97d2d68e5e21dc1c726eca2a13cd59.exe
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Size
96KB
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MD5
de97d2d68e5e21dc1c726eca2a13cd59
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SHA1
ffd2fe67e1256799d6b6d9970c9a49faa826c6a1
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SHA256
3df0e35b61a28331aca78be5a7630c18e72b708b5ee57c5a8f67ef411c49a537
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SHA512
a936902e66847718ed86d5923d2fc169d3652ad5f5d98ab966cda9ba767bd11130ca23dac47aa357be5d836824689f1f4b128853a63fad09e30508dda4bc1eba
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SSDEEP
1536:EBeSb91Z8Q89H1UbLSLcocTzFJ0T72VpH5:2h4cBTzFJ0T7275
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-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" de97d2d68e5e21dc1c726eca2a13cd59.exe Set value (int) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" kefaj.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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation de97d2d68e5e21dc1c726eca2a13cd59.exe -
Executes dropped EXE 1 IoCs
pid Process 4312 kefaj.exe -
Adds Run key to start application 2 TTPs 27 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /a" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /d" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /j" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /g" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /i" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /w" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /t" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /f" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /k" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /c" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /s" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /e" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /n" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /z" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /x" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /v" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /m" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /m" de97d2d68e5e21dc1c726eca2a13cd59.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /h" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /b" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /q" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /y" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /l" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /r" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /u" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /p" kefaj.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kefaj = "C:\\Users\\Admin\\kefaj.exe /o" kefaj.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 2440 de97d2d68e5e21dc1c726eca2a13cd59.exe 2440 de97d2d68e5e21dc1c726eca2a13cd59.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe 4312 kefaj.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2440 de97d2d68e5e21dc1c726eca2a13cd59.exe 4312 kefaj.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2440 wrote to memory of 4312 2440 de97d2d68e5e21dc1c726eca2a13cd59.exe 92 PID 2440 wrote to memory of 4312 2440 de97d2d68e5e21dc1c726eca2a13cd59.exe 92 PID 2440 wrote to memory of 4312 2440 de97d2d68e5e21dc1c726eca2a13cd59.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\de97d2d68e5e21dc1c726eca2a13cd59.exe"C:\Users\Admin\AppData\Local\Temp\de97d2d68e5e21dc1c726eca2a13cd59.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:2440 -
C:\Users\Admin\kefaj.exe"C:\Users\Admin\kefaj.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:4312
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
96KB
MD5cc1901eb3ed1562c758b865aa865466c
SHA145ddfa37e3e223bddf8fec5c4802934d3d3be5ab
SHA256c12ec73507ee1060199efd95b50df5f2e9550c0660db620dd25c289839b065a9
SHA51248d9ade84a843429b7773d51eb03c4e0524db07ab6a666e5ad858927142a0e4899984658d5b660e7d3b330da4c363cfb3346d0c4bcfd21e88543d282bf2fb8b5