Analysis
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max time kernel
149s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
25/03/2024, 13:57
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
de2c35223095306856442ebb7957a1ba.exe
Resource
win7-20240221-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
de2c35223095306856442ebb7957a1ba.exe
Resource
win10v2004-20240226-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
de2c35223095306856442ebb7957a1ba.exe
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Size
172KB
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MD5
de2c35223095306856442ebb7957a1ba
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SHA1
92d0e743bbdc9fe8250c73fe1e55667c5d5c894b
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SHA256
b0e8425423458fad530b24589ea58c0fc9458d690cd235502e5aa16c4c76a670
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SHA512
0756bea5bceed98264b6d9455ac90ac59d8d0b821345c61e491d66c56800b765cec8b038150ce4b713aa3e25ce877974cd7a2f23cfe955f72473645345247b27
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SSDEEP
3072:eTVlB5QqiwcCA0laletdpVinzswyAQjh/gSF3Ef3ykQoz7WC4:qIqtc30l+2yzswyAQjh/gSF3Ef3ykQog
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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" de2c35223095306856442ebb7957a1ba.exe Set value (int) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yiifa.exe -
Executes dropped EXE 1 IoCs
pid Process 2068 yiifa.exe -
Loads dropped DLL 2 IoCs
pid Process 2256 de2c35223095306856442ebb7957a1ba.exe 2256 de2c35223095306856442ebb7957a1ba.exe -
Adds Run key to start application 2 TTPs 52 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /r" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /O" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /b" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /g" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /G" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /t" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /z" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /U" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /h" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /j" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /K" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /n" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /Y" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /Q" de2c35223095306856442ebb7957a1ba.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /L" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /V" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /v" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /q" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /R" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /s" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /a" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /E" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /p" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /Q" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /D" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /N" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /f" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /M" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /k" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /i" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /H" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /I" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /e" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /A" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /u" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /m" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /F" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /w" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /W" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /y" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /x" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /P" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /J" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /Z" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /S" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /C" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /c" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /d" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /o" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /T" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /l" yiifa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiifa = "C:\\Users\\Admin\\yiifa.exe /X" yiifa.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 2256 de2c35223095306856442ebb7957a1ba.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe 2068 yiifa.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2256 de2c35223095306856442ebb7957a1ba.exe 2068 yiifa.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2256 wrote to memory of 2068 2256 de2c35223095306856442ebb7957a1ba.exe 28 PID 2256 wrote to memory of 2068 2256 de2c35223095306856442ebb7957a1ba.exe 28 PID 2256 wrote to memory of 2068 2256 de2c35223095306856442ebb7957a1ba.exe 28 PID 2256 wrote to memory of 2068 2256 de2c35223095306856442ebb7957a1ba.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\de2c35223095306856442ebb7957a1ba.exe"C:\Users\Admin\AppData\Local\Temp\de2c35223095306856442ebb7957a1ba.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2256 -
C:\Users\Admin\yiifa.exe"C:\Users\Admin\yiifa.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:2068
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
172KB
MD5333baf5fe3fc48fb212e3d8eab257f4d
SHA110aa8a2a67e3b692d5170e369a49f92a73b0a6a3
SHA256d84c174154a85d35941e033198883e65e6895f532cc0508431e08321194e1d4f
SHA512eeb024e93a1d60d4dd89764d5daf4a9d2c705427e55370241f7a06fbf11c1ed8ed39a09f84f80753a34dd2c62d6279e53e7889dd97cce30c48a7cdaed22396ef