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Analysis
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max time kernel
150s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
20/10/2022, 05:16
Static task
static1
Behavioral task
behavioral1
Sample
4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe
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Size
84KB
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MD5
8163478b2a291ced0fb19a17071cfa80
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SHA1
7a98cb8d02ee5464f3fddf2a420ca225591abb9e
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SHA256
4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222
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SHA512
d7f54d22759bde84c8e3bbb97fe38c82f49931fd4ec6ace9c352101e92cd70ed0bd751c5d5451c78333b89a424c85d9e30811bcd38caca03b6f8f1cc61850e6a
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SSDEEP
1536:osmdgG5S16Lti8n42APNR2dcScLcPcxeTanuUHWOms3xxNMq39gk34iS5v:l04PNEdcScLcPcfnuS0hv
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" 4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" kvnul.exe -
Executes dropped EXE 1 IoCs
pid Process 1560 kvnul.exe -
Loads dropped DLL 2 IoCs
pid Process 736 4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe 736 4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.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\kvnul = "C:\\Users\\Admin\\kvnul.exe /c" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /r" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /h" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /t" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /r" 4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /g" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /k" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /o" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /f" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /n" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /u" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /l" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /y" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /z" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /v" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /a" kvnul.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /x" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /j" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /b" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /m" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /s" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /p" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /e" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /d" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /i" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /w" kvnul.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kvnul = "C:\\Users\\Admin\\kvnul.exe /q" kvnul.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.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 736 4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe 1560 kvnul.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 736 4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe 1560 kvnul.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 736 wrote to memory of 1560 736 4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe 27 PID 736 wrote to memory of 1560 736 4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe 27 PID 736 wrote to memory of 1560 736 4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe 27 PID 736 wrote to memory of 1560 736 4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.exe"C:\Users\Admin\AppData\Local\Temp\4e703dd145715def9cc64ee25fb9d225575d773374f0628e0775cf7b31a20222.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:736 -
C:\Users\Admin\kvnul.exe"C:\Users\Admin\kvnul.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:1560
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
84KB
MD5fdeaf1192b4c8fea386d699235f807d4
SHA11677fb3e1582510bab955b1b07cc26bc09c33f95
SHA25696a4bc93ebff1e92ff9b27862b29e6ad163a53db4b92325dacb87394c626002f
SHA512d404612e349fed1b1632fa7781236dd01442e5d7400d6befedc8f82fafbbaf621a9381ebd02964c1bcaab1499a8171651983cf85ad1ab38f8abb80f2fde21a1d
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Filesize
84KB
MD5fdeaf1192b4c8fea386d699235f807d4
SHA11677fb3e1582510bab955b1b07cc26bc09c33f95
SHA25696a4bc93ebff1e92ff9b27862b29e6ad163a53db4b92325dacb87394c626002f
SHA512d404612e349fed1b1632fa7781236dd01442e5d7400d6befedc8f82fafbbaf621a9381ebd02964c1bcaab1499a8171651983cf85ad1ab38f8abb80f2fde21a1d
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Filesize
84KB
MD5fdeaf1192b4c8fea386d699235f807d4
SHA11677fb3e1582510bab955b1b07cc26bc09c33f95
SHA25696a4bc93ebff1e92ff9b27862b29e6ad163a53db4b92325dacb87394c626002f
SHA512d404612e349fed1b1632fa7781236dd01442e5d7400d6befedc8f82fafbbaf621a9381ebd02964c1bcaab1499a8171651983cf85ad1ab38f8abb80f2fde21a1d
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Filesize
84KB
MD5fdeaf1192b4c8fea386d699235f807d4
SHA11677fb3e1582510bab955b1b07cc26bc09c33f95
SHA25696a4bc93ebff1e92ff9b27862b29e6ad163a53db4b92325dacb87394c626002f
SHA512d404612e349fed1b1632fa7781236dd01442e5d7400d6befedc8f82fafbbaf621a9381ebd02964c1bcaab1499a8171651983cf85ad1ab38f8abb80f2fde21a1d