Analysis
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max time kernel
169s -
max time network
181s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
29/11/2022, 17:11
Static task
static1
Behavioral task
behavioral1
Sample
b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe
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Size
240KB
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MD5
18f1ea5d2a889f60dd6a8dcaba044574
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SHA1
104fd49949de0ab4c91bea13913964d5e70284a6
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SHA256
b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80
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SHA512
fd4fcf9a45931e2423af9a0b0347bee809e7bb6ef57ae4b9b4f4e81762bfd207ad88a209e1ef3fd946816e516d66f2aecb52ed9f3e32f2a408b13b9ac96e9c74
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SSDEEP
6144:zUP3dwqsNwemAB0EqxF6snji81RUinKchhy9SE:udQQJsEE
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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" rufot.exe -
Executes dropped EXE 1 IoCs
pid Process 2176 rufot.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /l" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /b" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /e" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /o" rufot.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /q" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /j" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /i" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /u" rufot.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /m" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /f" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /t" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /h" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /g" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /y" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /c" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /x" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /n" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /z" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /r" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /k" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /p" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /u" b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /a" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /w" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /v" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /s" rufot.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rufot = "C:\\Users\\Admin\\rufot.exe /d" rufot.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 1672 b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe 1672 b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe 2176 rufot.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1672 b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe 2176 rufot.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1672 wrote to memory of 2176 1672 b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe 83 PID 1672 wrote to memory of 2176 1672 b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe 83 PID 1672 wrote to memory of 2176 1672 b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.exe"C:\Users\Admin\AppData\Local\Temp\b8fd0ec2141bfb489d9e63d7f5ff0d0bf00724bfcea87c600d3968424d13ad80.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:1672 -
C:\Users\Admin\rufot.exe"C:\Users\Admin\rufot.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:2176
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
240KB
MD5de807bba729ecf49b646c8664dec93a6
SHA172eb82ad3df6cdfa672023182e732509c6861048
SHA2566fc4f20116b588afca77f6eeb53678af52a98291fd2c4d14471ddfcd81116a59
SHA512d4abb0a4508efd1a620a2866f2e544f3f3c7f17490f5c5862c232203013544e7d44568dcdaeba4bd2101dfcd72dedbe433a9f9384c4fe1476089e893f4aedc23
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Filesize
240KB
MD5de807bba729ecf49b646c8664dec93a6
SHA172eb82ad3df6cdfa672023182e732509c6861048
SHA2566fc4f20116b588afca77f6eeb53678af52a98291fd2c4d14471ddfcd81116a59
SHA512d4abb0a4508efd1a620a2866f2e544f3f3c7f17490f5c5862c232203013544e7d44568dcdaeba4bd2101dfcd72dedbe433a9f9384c4fe1476089e893f4aedc23