Analysis
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max time kernel
147s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
01-07-2022 14:54
Static task
static1
Behavioral task
behavioral1
Sample
ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe
Resource
win10v2004-20220414-en
General
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Target
ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe
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Size
165KB
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MD5
83e92758d97a8daac290affd8172123c
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SHA1
10784ae6ff2685f10aa1f5d16c2981de7be8702a
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SHA256
ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7
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SHA512
4de3a34df593c4cafeb2046e1b3dba6653f089739871ad0f36ae09387555fd8c6c5c09f4e42cc2db2bffd388fa8e5b0a2eac752af609467c725fb5ad675ce42d
Malware Config
Extracted
C:\rzf2hx3l4-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/2F620C88643282C8
http://decryptor.top/2F620C88643282C8
Signatures
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Sodin,Sodinokibi,REvil
Ransomware with advanced anti-analysis and privilege escalation functionality.
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Modifies extensions of user files 4 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exedescription ioc process File opened for modification \??\c:\users\admin\pictures\AddInvoke.tiff ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File renamed C:\Users\Admin\Pictures\AddInvoke.tiff => \??\c:\users\admin\pictures\AddInvoke.tiff.rzf2hx3l4 ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File renamed C:\Users\Admin\Pictures\ClearUnblock.crw => \??\c:\users\admin\pictures\ClearUnblock.crw.rzf2hx3l4 ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File renamed C:\Users\Admin\Pictures\FormatOpen.tif => \??\c:\users\admin\pictures\FormatOpen.tif.rzf2hx3l4 ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\L2mKLMcNmB = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe" ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exedescription ioc process File opened (read-only) \??\E: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\F: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\R: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\Z: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\Y: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\D: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\B: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\S: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\T: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\V: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\X: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\L: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\M: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\P: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\A: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\G: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\H: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\I: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\J: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\Q: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\K: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\N: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\O: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\U: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened (read-only) \??\W: ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\i1lq7.bmp" ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe -
Drops file in Program Files directory 12 IoCs
Processes:
ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exedescription ioc process File opened for modification \??\c:\program files\RestartStep.docm ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File created \??\c:\program files\rzf2hx3l4-readme.txt ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened for modification \??\c:\program files\ConvertFromSend.rmi ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened for modification \??\c:\program files\EnterSync.vsd ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened for modification \??\c:\program files\OptimizeUpdate.xltm ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened for modification \??\c:\program files\InvokeWrite.mp2v ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened for modification \??\c:\program files\ResolveUnpublish.htm ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened for modification \??\c:\program files\SuspendGroup.ADTS ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File created \??\c:\program files (x86)\rzf2hx3l4-readme.txt ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened for modification \??\c:\program files\DebugSearch.search-ms ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened for modification \??\c:\program files\FindDeny.raw ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe File opened for modification \??\c:\program files\InitializeBlock.TTS ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exepowershell.exepid process 3028 ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe 3028 ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe 3908 powershell.exe 3908 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
powershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 3908 powershell.exe Token: SeBackupPrivilege 3868 vssvc.exe Token: SeRestorePrivilege 3868 vssvc.exe Token: SeAuditPrivilege 3868 vssvc.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exedescription pid process target process PID 3028 wrote to memory of 3908 3028 ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe powershell.exe PID 3028 wrote to memory of 3908 3028 ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe"C:\Users\Admin\AppData\Local\Temp\ba76db6dc7d7045db201d4a8dba17f17dc91d735490976fbd1ef9a0b1dcc38a7.exe"1⤵
- Modifies extensions of user files
- Adds Run key to start application
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3028 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3908
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:4128
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3868