Analysis Overview
SHA256
06f91fc7261d927a8b95818eec6fd925ea44eb5e4cddc914818940e1ffe0c69b
Threat Level: Known bad
The file babuk.7z was found to be: Known bad.
Malicious Activity Summary
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
Enumerates connected drives
Enumerates physical storage devices
Interacts with shadow copies
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-06-01 17:46
Signatures
Analysis: behavioral2
Detonation Overview
Submitted
2021-06-01 17:46
Reported
2021-06-01 17:49
Platform
win10v20210408
Max time kernel
29s
Max time network
69s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\Pictures\CheckpointRename.raw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\CloseBlock.tiff => C:\Users\Admin\Pictures\CloseBlock.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\CloseBlock.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\GroupUnregister.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\LimitSend.raw => C:\Users\Admin\Pictures\LimitSend.raw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RestoreDisconnect.crw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\StopPing.raw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\CloseBlock.tiff | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConnectOut.png => C:\Users\Admin\Pictures\ConnectOut.png.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\LimitSend.raw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RestoreDisconnect.crw => C:\Users\Admin\Pictures\RestoreDisconnect.crw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\CheckpointRename.raw => C:\Users\Admin\Pictures\CheckpointRename.raw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ConnectOut.png.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\GroupUnregister.tiff => C:\Users\Admin\Pictures\GroupUnregister.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\StopPing.raw => C:\Users\Admin\Pictures\StopPing.raw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\GroupUnregister.tiff | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\UnblockDebug.raw => C:\Users\Admin\Pictures\UnblockDebug.raw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\UnblockDebug.raw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
Enumerates connected drives
Enumerates physical storage devices
Interacts with shadow copies
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\vssadmin.exe | N/A |
| N/A | N/A | C:\Windows\system32\vssadmin.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| 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 |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 740 wrote to memory of 4024 | N/A | C:\Users\Admin\AppData\Local\Temp\babuk.exe | C:\Windows\System32\cmd.exe |
| PID 740 wrote to memory of 4024 | N/A | C:\Users\Admin\AppData\Local\Temp\babuk.exe | C:\Windows\System32\cmd.exe |
| PID 4024 wrote to memory of 2948 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 4024 wrote to memory of 2948 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 740 wrote to memory of 2068 | N/A | C:\Users\Admin\AppData\Local\Temp\babuk.exe | C:\Windows\System32\cmd.exe |
| PID 740 wrote to memory of 2068 | N/A | C:\Users\Admin\AppData\Local\Temp\babuk.exe | C:\Windows\System32\cmd.exe |
| PID 2068 wrote to memory of 3504 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 2068 wrote to memory of 3504 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\babuk.exe
"C:\Users\Admin\AppData\Local\Temp\babuk.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
Network
Files
memory/4024-114-0x0000000000000000-mapping.dmp
memory/2948-115-0x0000000000000000-mapping.dmp
memory/2068-116-0x0000000000000000-mapping.dmp
memory/3504-117-0x0000000000000000-mapping.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2021-06-01 17:46
Reported
2021-06-01 17:49
Platform
win7v20210410
Max time kernel
91s
Max time network
92s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\Pictures\ExitSelect.tiff | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ExitSelect.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ReceiveWait.tif.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\HideAdd.tiff => C:\Users\Admin\Pictures\HideAdd.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\HideAdd.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ReceiveWait.tif => C:\Users\Admin\Pictures\ReceiveWait.tif.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\AddDebug.crw => C:\Users\Admin\Pictures\AddDebug.crw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\AddDebug.crw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\HideAdd.tiff | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SetInstall.tiff => C:\Users\Admin\Pictures\SetInstall.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\SetInstall.tiff | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\SetInstall.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConvertFromStart.crw => C:\Users\Admin\Pictures\ConvertFromStart.crw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ConvertFromStart.crw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ExitSelect.tiff => C:\Users\Admin\Pictures\ExitSelect.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ProtectWrite.raw => C:\Users\Admin\Pictures\ProtectWrite.raw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ProtectWrite.raw.babyk | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
Enumerates connected drives
Enumerates physical storage devices
Interacts with shadow copies
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\vssadmin.exe | N/A |
| N/A | N/A | C:\Windows\system32\vssadmin.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\babuk.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| 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 |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\babuk.exe
"C:\Users\Admin\AppData\Local\Temp\babuk.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
Network
Files
memory/1096-59-0x0000000075281000-0x0000000075283000-memory.dmp
memory/1980-60-0x0000000000000000-mapping.dmp
memory/1772-61-0x0000000000000000-mapping.dmp
memory/1208-62-0x0000000000000000-mapping.dmp
memory/1932-63-0x0000000000000000-mapping.dmp