Analysis
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max time kernel
189s -
max time network
104s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
30/10/2022, 05:19
Static task
static1
Behavioral task
behavioral1
Sample
d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe
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Size
232KB
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MD5
8411fe2791add4711d6a65d99b6bd9f8
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SHA1
51a2d040f4c18906fe361646b05c76e9694f55db
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SHA256
d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56
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SHA512
dbbfb02b94458245e93fcdf2590dfdf0260a7555af17755f00d436c892f42fee98c874fee0138c5b90fbf4df3f2855e597a14b7a8d1adaa729cd1857105940eb
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SSDEEP
6144:3F+03PFKs7GeF+c9EqxF6snji81RUinKNG:EuPhYU
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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" gaoka.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe -
Executes dropped EXE 1 IoCs
pid Process 1732 gaoka.exe -
Loads dropped DLL 2 IoCs
pid Process 1400 d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe 1400 d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /z" d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /d" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /b" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /x" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /w" gaoka.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /n" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /v" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /o" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /h" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /m" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /e" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /k" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /a" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /p" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /c" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /q" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /j" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /r" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /l" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /z" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /i" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /t" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /g" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /y" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /u" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /s" gaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gaoka = "C:\\Users\\Admin\\gaoka.exe /f" gaoka.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1400 d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe 1732 gaoka.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1400 d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe 1732 gaoka.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1400 wrote to memory of 1732 1400 d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe 28 PID 1400 wrote to memory of 1732 1400 d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe 28 PID 1400 wrote to memory of 1732 1400 d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe 28 PID 1400 wrote to memory of 1732 1400 d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.exe"C:\Users\Admin\AppData\Local\Temp\d443a351c87f69e9696944efc9decdd0d4a09cb83392cb431bb08f3617836f56.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:1400 -
C:\Users\Admin\gaoka.exe"C:\Users\Admin\gaoka.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:1732
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
232KB
MD5ca0de6c8afe3b5a5991daf4e0d89633b
SHA19ad9205998f277bbc35aa6e7e924fcb677bfda8f
SHA25651583ca7f4285d86ae5bdbad3bc3e22e254c033450ee9563865378b4c780a7b6
SHA51222dd78b720e7b8f230db268859b6267bdd5c94056c98902775a8e33b7edccd3287fcb36e35ff1d1d41027d9cd9f78bf8501d6e39c821000acf4d8577b577f337
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Filesize
232KB
MD5ca0de6c8afe3b5a5991daf4e0d89633b
SHA19ad9205998f277bbc35aa6e7e924fcb677bfda8f
SHA25651583ca7f4285d86ae5bdbad3bc3e22e254c033450ee9563865378b4c780a7b6
SHA51222dd78b720e7b8f230db268859b6267bdd5c94056c98902775a8e33b7edccd3287fcb36e35ff1d1d41027d9cd9f78bf8501d6e39c821000acf4d8577b577f337
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Filesize
232KB
MD5ca0de6c8afe3b5a5991daf4e0d89633b
SHA19ad9205998f277bbc35aa6e7e924fcb677bfda8f
SHA25651583ca7f4285d86ae5bdbad3bc3e22e254c033450ee9563865378b4c780a7b6
SHA51222dd78b720e7b8f230db268859b6267bdd5c94056c98902775a8e33b7edccd3287fcb36e35ff1d1d41027d9cd9f78bf8501d6e39c821000acf4d8577b577f337
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Filesize
232KB
MD5ca0de6c8afe3b5a5991daf4e0d89633b
SHA19ad9205998f277bbc35aa6e7e924fcb677bfda8f
SHA25651583ca7f4285d86ae5bdbad3bc3e22e254c033450ee9563865378b4c780a7b6
SHA51222dd78b720e7b8f230db268859b6267bdd5c94056c98902775a8e33b7edccd3287fcb36e35ff1d1d41027d9cd9f78bf8501d6e39c821000acf4d8577b577f337