Analysis
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max time kernel
151s -
max time network
98s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
01/12/2022, 23:58
Static task
static1
Behavioral task
behavioral1
Sample
a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe
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Size
172KB
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MD5
339a4e80789b07aa07f394bfed6fb882
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SHA1
766ae99d413e333f808f18ba92786e235baaf5b8
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SHA256
a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e
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SHA512
e1f4a4210c51452322347ba8874848cdc6eeca48c5dac6b35c17e4a058ce1dc9ba36c81f2dc7fc024e3def19bf753dbd460969c917dd3aff53cf7ae3c2d72c22
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SSDEEP
3072:mdHhSR9lbep9Chu7Gbwhd5eEQMSZdSkxiAPbmW8mjCwH:mEepqu7CwteASZdBxPbPJ
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" a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" coihox.exe -
Executes dropped EXE 1 IoCs
pid Process 1900 coihox.exe -
Loads dropped DLL 2 IoCs
pid Process 368 a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe 368 a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe -
Adds Run key to start application 2 TTPs 53 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /Q" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /v" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /J" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /u" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /C" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /B" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /O" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /A" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /N" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /j" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /h" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /Z" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /e" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /D" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /V" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /S" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /T" coihox.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /c" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /q" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /H" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /a" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /d" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /F" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /n" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /X" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /m" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /r" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /E" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /w" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /s" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /t" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /Y" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /g" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /b" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /k" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /o" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /y" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /x" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /i" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /U" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /R" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /P" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /p" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /K" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /D" a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /l" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /z" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /L" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /M" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /G" coihox.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\coihox = "C:\\Users\\Admin\\coihox.exe /f" coihox.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 368 a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe 1900 coihox.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 368 a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe 1900 coihox.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 368 wrote to memory of 1900 368 a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe 27 PID 368 wrote to memory of 1900 368 a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe 27 PID 368 wrote to memory of 1900 368 a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe 27 PID 368 wrote to memory of 1900 368 a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.exe"C:\Users\Admin\AppData\Local\Temp\a79bbc55511434b0184170b0b7d3ae585af7306412b9ebca8be6801cc143c43e.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:368 -
C:\Users\Admin\coihox.exe"C:\Users\Admin\coihox.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:1900
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
172KB
MD582798a0d5916eecae616d18dba77efb0
SHA1b907484187d68318984ee5bdf17b7b3980c27e5e
SHA256418e8c455d18cb9d0eea50b4f1eb433e6fd94fa16f9eb85d17467e7fb296bb36
SHA5121647cf7dce2fcb711d50b27cae68c34e7e2241ef9f8363fa4bac2b850cabc58926e3344626dc71afd734a44dc3784e4bf2b1ff78c97203508b8b8745c2d1d44c
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Filesize
172KB
MD582798a0d5916eecae616d18dba77efb0
SHA1b907484187d68318984ee5bdf17b7b3980c27e5e
SHA256418e8c455d18cb9d0eea50b4f1eb433e6fd94fa16f9eb85d17467e7fb296bb36
SHA5121647cf7dce2fcb711d50b27cae68c34e7e2241ef9f8363fa4bac2b850cabc58926e3344626dc71afd734a44dc3784e4bf2b1ff78c97203508b8b8745c2d1d44c
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Filesize
172KB
MD582798a0d5916eecae616d18dba77efb0
SHA1b907484187d68318984ee5bdf17b7b3980c27e5e
SHA256418e8c455d18cb9d0eea50b4f1eb433e6fd94fa16f9eb85d17467e7fb296bb36
SHA5121647cf7dce2fcb711d50b27cae68c34e7e2241ef9f8363fa4bac2b850cabc58926e3344626dc71afd734a44dc3784e4bf2b1ff78c97203508b8b8745c2d1d44c
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Filesize
172KB
MD582798a0d5916eecae616d18dba77efb0
SHA1b907484187d68318984ee5bdf17b7b3980c27e5e
SHA256418e8c455d18cb9d0eea50b4f1eb433e6fd94fa16f9eb85d17467e7fb296bb36
SHA5121647cf7dce2fcb711d50b27cae68c34e7e2241ef9f8363fa4bac2b850cabc58926e3344626dc71afd734a44dc3784e4bf2b1ff78c97203508b8b8745c2d1d44c