Analysis
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max time kernel
152s -
max time network
86s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
20/10/2022, 10:19
Static task
static1
Behavioral task
behavioral1
Sample
2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe
Resource
win7-20220812-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe
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Size
224KB
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MD5
9057f8b9b7995fa170b24e839f0f1230
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SHA1
5270cb87f537cb9b013420a03acfa6a2750bc851
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SHA256
2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122
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SHA512
c932061cb9a0458f640cf3789de22844ea613d0e1048f444a2ac0b00dea42fcd15e45459a88c7f391a63f30a433f813ec5944dfedac45a576d4dd545576b5995
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SSDEEP
6144:3f1q94LT6HGy9GVCgZu6PSSgAMbWk6V5tGl50FOIMH3yf1xiPmeLbw:3fgmu6V5tGl50FOIY3yfjE
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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" crnab.exe -
Executes dropped EXE 1 IoCs
pid Process 900 crnab.exe -
Loads dropped DLL 2 IoCs
pid Process 1088 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe 1088 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /r" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /q" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /t" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /u" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /s" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /k" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /j" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /f" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /w" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /n" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /m" 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /d" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /p" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /e" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /z" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /g" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /b" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /a" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /c" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /v" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /h" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /l" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /y" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /o" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /x" crnab.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /m" crnab.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\crnab = "C:\\Users\\Admin\\crnab.exe /i" crnab.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum crnab.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 crnab.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 1088 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe 900 crnab.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1088 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe 900 crnab.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1088 wrote to memory of 900 1088 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe 28 PID 1088 wrote to memory of 900 1088 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe 28 PID 1088 wrote to memory of 900 1088 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe 28 PID 1088 wrote to memory of 900 1088 2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe"C:\Users\Admin\AppData\Local\Temp\2f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1088 -
C:\Users\Admin\crnab.exe"C:\Users\Admin\crnab.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:900
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
224KB
MD59057f8b9b7995fa170b24e839f0f1230
SHA15270cb87f537cb9b013420a03acfa6a2750bc851
SHA2562f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122
SHA512c932061cb9a0458f640cf3789de22844ea613d0e1048f444a2ac0b00dea42fcd15e45459a88c7f391a63f30a433f813ec5944dfedac45a576d4dd545576b5995
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Filesize
224KB
MD59057f8b9b7995fa170b24e839f0f1230
SHA15270cb87f537cb9b013420a03acfa6a2750bc851
SHA2562f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122
SHA512c932061cb9a0458f640cf3789de22844ea613d0e1048f444a2ac0b00dea42fcd15e45459a88c7f391a63f30a433f813ec5944dfedac45a576d4dd545576b5995
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Filesize
224KB
MD59057f8b9b7995fa170b24e839f0f1230
SHA15270cb87f537cb9b013420a03acfa6a2750bc851
SHA2562f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122
SHA512c932061cb9a0458f640cf3789de22844ea613d0e1048f444a2ac0b00dea42fcd15e45459a88c7f391a63f30a433f813ec5944dfedac45a576d4dd545576b5995
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Filesize
224KB
MD59057f8b9b7995fa170b24e839f0f1230
SHA15270cb87f537cb9b013420a03acfa6a2750bc851
SHA2562f9e2ba7deae7f31e75f3dfbd640749754ba4a7fafb4bb1e9ec7478ffff91122
SHA512c932061cb9a0458f640cf3789de22844ea613d0e1048f444a2ac0b00dea42fcd15e45459a88c7f391a63f30a433f813ec5944dfedac45a576d4dd545576b5995