Analysis Overview
SHA256
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281
Threat Level: Known bad
The file 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281 was found to be: Known bad.
Malicious Activity Summary
Sodinokibi family
Modifies extensions of user files
Enumerates connected drives
Drops file in System32 directory
Sets desktop wallpaper using registry
Drops file in Program Files directory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-01-30 07:59
Signatures
Sodinokibi family
Analysis: behavioral1
Detonation Overview
Submitted
2022-01-30 07:59
Reported
2022-01-30 08:02
Platform
win7-en-20211208
Max time kernel
122s
Max time network
123s
Command Line
Signatures
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\UninstallExit.tiff => \??\c:\users\admin\pictures\UninstallExit.tiff.fmf5s773 | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File opened for modification | \??\c:\users\admin\pictures\ExpandExport.tiff | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File opened for modification | \??\c:\users\admin\pictures\UninstallExit.tiff | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ExpandExport.tiff => \??\c:\users\admin\pictures\ExpandExport.tiff.fmf5s773 | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ShowConvertFrom.crw => \??\c:\users\admin\pictures\ShowConvertFrom.crw.fmf5s773 | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SendUndo.raw => \??\c:\users\admin\pictures\SendUndo.raw.fmf5s773 | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\TestConfirm.raw => \??\c:\users\admin\pictures\TestConfirm.raw.fmf5s773 | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
Enumerates connected drives
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ynevslfautuy.bmp" | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
Drops file in Program Files directory
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeAuditPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1604 wrote to memory of 952 | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1604 wrote to memory of 952 | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1604 wrote to memory of 952 | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1604 wrote to memory of 952 | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe
"C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
C:\Windows\system32\wbem\unsecapp.exe
C:\Windows\system32\wbem\unsecapp.exe -Embedding
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
Files
memory/1604-55-0x00000000762C1000-0x00000000762C3000-memory.dmp
memory/952-56-0x000007FEFBC31000-0x000007FEFBC33000-memory.dmp
memory/952-58-0x0000000002940000-0x0000000002942000-memory.dmp
memory/952-59-0x0000000002942000-0x0000000002944000-memory.dmp
memory/952-60-0x0000000002944000-0x0000000002947000-memory.dmp
memory/952-57-0x000007FEF2CE0000-0x000007FEF383D000-memory.dmp
memory/952-61-0x000000000294B000-0x000000000296A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-01-30 07:59
Reported
2022-01-30 08:03
Platform
win10-en-20211208
Max time kernel
154s
Max time network
130s
Command Line
Signatures
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\UnprotectLock.raw => \??\c:\users\admin\pictures\UnprotectLock.raw.3cqd8 | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\UnblockConvertFrom.tif => \??\c:\users\admin\pictures\UnblockConvertFrom.tif.3cqd8 | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File opened for modification | \??\c:\users\admin\pictures\DenyStep.tiff | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\AddDisconnect.png => \??\c:\users\admin\pictures\AddDisconnect.png.3cqd8 | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\DenyStep.tiff => \??\c:\users\admin\pictures\DenyStep.tiff.3cqd8 | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\DisconnectProtect.tif => \??\c:\users\admin\pictures\DisconnectProtect.tif.3cqd8 | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\FindSplit.crw => \??\c:\users\admin\pictures\FindSplit.crw.3cqd8 | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
Enumerates connected drives
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\System32\CatRoot2\dberr.txt | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\283s.bmp" | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
Drops file in Program Files directory
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeAuditPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1348 wrote to memory of 3176 | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1348 wrote to memory of 3176 | N/A | C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe
"C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe"
C:\Windows\system32\wbem\unsecapp.exe
C:\Windows\system32\wbem\unsecapp.exe -Embedding
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
Files
memory/3176-120-0x000001E871850000-0x000001E871872000-memory.dmp
memory/3176-121-0x000001E871900000-0x000001E871902000-memory.dmp
memory/3176-122-0x000001E871903000-0x000001E871905000-memory.dmp
memory/3176-127-0x000001E873C30000-0x000001E873CA6000-memory.dmp
memory/3176-138-0x000001E871906000-0x000001E871908000-memory.dmp