Analysis
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max time kernel
190s -
max time network
233s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
29/11/2022, 17:27
Static task
static1
Behavioral task
behavioral1
Sample
9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe
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Size
204KB
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MD5
38114e2c5d2cc9c71aac8740ff345090
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SHA1
0511718c9053454f7dd0184a92b26c0e7f873f5d
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SHA256
9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92
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SHA512
1deaa2943dd17e3ca2e41849d2a85ddb1a9debd2d4f51965b0d53596a08016da7495403aef56a5321068214e3a6803e1128be71a8e1d418262253467a446f010
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SSDEEP
3072:8m8W8e0tQ9nLHbB9W0c1TqECzR/mkSYGrl9ymgYUWzG:nxt4QxL7B9W0c1RCzR/fSmlEG
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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe Set value (int) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" caook.exe -
Executes dropped EXE 1 IoCs
pid Process 1432 caook.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation 9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /u" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /c" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /j" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /w" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /g" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /k" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /o" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /s" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /f" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /l" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /a" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /c" 9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /i" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /b" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /q" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /x" caook.exe Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /y" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /p" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /t" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /d" caook.exe Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\Run\ caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /m" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /n" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /h" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /v" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /e" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /z" caook.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caook = "C:\\Users\\Admin\\caook.exe /r" caook.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 3516 9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe 3516 9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe 1432 caook.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3516 9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe 1432 caook.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3516 wrote to memory of 1432 3516 9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe 81 PID 3516 wrote to memory of 1432 3516 9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe 81 PID 3516 wrote to memory of 1432 3516 9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe"C:\Users\Admin\AppData\Local\Temp\9365bd2741a961ca7a2cfe382b834a9a1ad4a6a20b7ea41dc4643cb794f12f92.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3516 -
C:\Users\Admin\caook.exe"C:\Users\Admin\caook.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:1432
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
204KB
MD56b4771e22e78d8a21c5bcd9c1b3dbd62
SHA1effc7f6699511363e6b7c7d84548471302b61c09
SHA2568a587fac5b396e573d9aaff0af3783a0d648aaa103822e108e85c1e72a85da4e
SHA512b7351b78089b1dce756eedba5efec02af5b0a2542afd4100083c131e63a2e294027f5e897212bf792b4c0a96b18ae08bc4a282d5c10a60c4b87651ffeb790030
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Filesize
204KB
MD56b4771e22e78d8a21c5bcd9c1b3dbd62
SHA1effc7f6699511363e6b7c7d84548471302b61c09
SHA2568a587fac5b396e573d9aaff0af3783a0d648aaa103822e108e85c1e72a85da4e
SHA512b7351b78089b1dce756eedba5efec02af5b0a2542afd4100083c131e63a2e294027f5e897212bf792b4c0a96b18ae08bc4a282d5c10a60c4b87651ffeb790030