Analysis Overview
SHA256
1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1
Threat Level: Known bad
The file e_win.exe 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 use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-05-04 18:09
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-05-04 18:09
Reported
2021-05-04 18:11
Platform
win7v20210410
Max time kernel
6s
Max time network
12s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\AssertOptimize.png => C:\Users\Admin\Pictures\AssertOptimize.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\DebugTrace.png => C:\Users\Admin\Pictures\DebugTrace.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RedoTrace.png => C:\Users\Admin\Pictures\RedoTrace.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RestartDisable.tif => C:\Users\Admin\Pictures\RestartDisable.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RestartDisable.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\BackupAdd.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\BackupAdd.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\InvokeSearch.tiff => C:\Users\Admin\Pictures\InvokeSearch.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\InvokeSearch.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RedoTrace.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\GrantUndo.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\BackupAdd.tiff => C:\Users\Admin\Pictures\BackupAdd.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\InvokeSearch.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\AssertOptimize.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\DebugTrace.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\GrantUndo.raw => C:\Users\Admin\Pictures\GrantUndo.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.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\e_win.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\e_win.exe
"C:\Users\Admin\AppData\Local\Temp\e_win.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/1116-59-0x00000000767B1000-0x00000000767B3000-memory.dmp
memory/1520-60-0x0000000000000000-mapping.dmp
memory/1912-61-0x0000000000000000-mapping.dmp
memory/1548-62-0x0000000000000000-mapping.dmp
memory/552-63-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-05-04 18:09
Reported
2021-05-04 18:11
Platform
win10v20210408
Max time kernel
27s
Max time network
67s
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\PushExit.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\MoveExport.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\UnprotectApprove.tif => C:\Users\Admin\Pictures\UnprotectApprove.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\MoveExport.tif => C:\Users\Admin\Pictures\MoveExport.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ReadAdd.raw => C:\Users\Admin\Pictures\ReadAdd.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ReadAdd.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\MountStart.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\SetUnlock.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SendConvertFrom.png => C:\Users\Admin\Pictures\SendConvertFrom.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SetStep.tiff => C:\Users\Admin\Pictures\SetStep.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\StepUnpublish.raw => C:\Users\Admin\Pictures\StepUnpublish.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\PushExit.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\SendConvertFrom.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\AddUnlock.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\DenyUnlock.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\DenyUnlock.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\MountStart.png => C:\Users\Admin\Pictures\MountStart.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\SetStep.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\AddUnlock.tif => C:\Users\Admin\Pictures\AddUnlock.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\PushExit.tiff => C:\Users\Admin\Pictures\PushExit.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\SetStep.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SetUnlock.tiff => C:\Users\Admin\Pictures\SetUnlock.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\SetUnlock.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\StepUnpublish.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\UnprotectApprove.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\DenyUnlock.tiff => C:\Users\Admin\Pictures\DenyUnlock.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.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\e_win.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.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 856 wrote to memory of 3052 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 856 wrote to memory of 3052 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 3052 wrote to memory of 3036 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 3052 wrote to memory of 3036 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 856 wrote to memory of 1264 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 856 wrote to memory of 1264 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 1264 wrote to memory of 2124 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 1264 wrote to memory of 2124 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\e_win.exe
"C:\Users\Admin\AppData\Local\Temp\e_win.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/3052-114-0x0000000000000000-mapping.dmp
memory/3036-115-0x0000000000000000-mapping.dmp
memory/1264-116-0x0000000000000000-mapping.dmp
memory/2124-117-0x0000000000000000-mapping.dmp