Analysis
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max time kernel
150s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
18-01-2024 18:23
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
65b7df421e0f7ed6d1762027fd559e4c.exe
Resource
win7-20231129-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
65b7df421e0f7ed6d1762027fd559e4c.exe
Resource
win10v2004-20231222-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
65b7df421e0f7ed6d1762027fd559e4c.exe
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Size
100KB
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MD5
65b7df421e0f7ed6d1762027fd559e4c
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SHA1
d4f2c747a35a1e670b1c7c571770a1662dc7e09b
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SHA256
38ea30cd5fd5943c8b1ff06995ff9cc208f990f675af77e9d17ee0bea84e5340
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SHA512
59324f1a167041dfeae8aa2bbfee26f29e3998d0121a4d4076085b781c1d883d1ea8f5daaf2c3fd9d8840fccfef0de8c4b0a39b01aa498a394014a2477aa2ddf
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SSDEEP
1536:JTtGH82NTzwLxpMGAc4ohrPXo+73Rez8b0SyuNIjnZq:aw+urPX7CuCnY
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-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 65b7df421e0f7ed6d1762027fd559e4c.exe Set value (int) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yaafow.exe -
Executes dropped EXE 1 IoCs
pid Process 3060 yaafow.exe -
Loads dropped DLL 2 IoCs
pid Process 2656 65b7df421e0f7ed6d1762027fd559e4c.exe 2656 65b7df421e0f7ed6d1762027fd559e4c.exe -
Adds Run key to start application 2 TTPs 52 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /A" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /P" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /m" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /q" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /d" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /S" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /p" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /N" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /M" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /J" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /f" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /C" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /I" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /g" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /h" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /u" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /l" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /b" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /y" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /R" 65b7df421e0f7ed6d1762027fd559e4c.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /a" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /z" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /T" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /t" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /B" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /x" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /c" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /G" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /s" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /Q" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /F" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /Y" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /U" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /K" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /o" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /L" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /O" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /E" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /X" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /k" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /j" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /r" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /e" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /H" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /i" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /v" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /V" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /Z" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /D" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /w" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /R" yaafow.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\yaafow = "C:\\Users\\Admin\\yaafow.exe /W" yaafow.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 2656 65b7df421e0f7ed6d1762027fd559e4c.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe 3060 yaafow.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2656 65b7df421e0f7ed6d1762027fd559e4c.exe 3060 yaafow.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2656 wrote to memory of 3060 2656 65b7df421e0f7ed6d1762027fd559e4c.exe 28 PID 2656 wrote to memory of 3060 2656 65b7df421e0f7ed6d1762027fd559e4c.exe 28 PID 2656 wrote to memory of 3060 2656 65b7df421e0f7ed6d1762027fd559e4c.exe 28 PID 2656 wrote to memory of 3060 2656 65b7df421e0f7ed6d1762027fd559e4c.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\65b7df421e0f7ed6d1762027fd559e4c.exe"C:\Users\Admin\AppData\Local\Temp\65b7df421e0f7ed6d1762027fd559e4c.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:2656 -
C:\Users\Admin\yaafow.exe"C:\Users\Admin\yaafow.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:3060
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
100KB
MD542bdd055a1c94b847a6af0f0f5f8b35d
SHA109591a00905128684dd2317e6e357e5d74999d6e
SHA2568abff1bfeb8941cd2b07da0fe105ba44c20e1aee39fc447dbdb1cf8088e1c1bb
SHA512e795b9b1f815ad3523d8773d83ef3eb8e387975fc6ea3d86390d300eaabee763bb5c223862f96a10670e0c6b7589c1da666ecf80ebb886c76d59a238d382381b