Analysis Overview
SHA256
678bfbf5d73d6cf38532e11b11dbed17668d94711e2e2ea27311dd46490201b7
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
Suspicious use of WriteProcessMemory
Interacts with shadow copies
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-04-27 04:20
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-04-27 04:20
Reported
2021-04-27 04:22
Platform
win7v20210410
Max time kernel
136s
Max time network
138s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\AddDebug.crw => C:\Users\Admin\Pictures\AddDebug.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\HideAdd.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ProtectWrite.raw => C:\Users\Admin\Pictures\ProtectWrite.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ProtectWrite.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ReceiveWait.tif => C:\Users\Admin\Pictures\ReceiveWait.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\HideAdd.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\SetInstall.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ExitSelect.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConvertFromStart.crw => C:\Users\Admin\Pictures\ConvertFromStart.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ConvertFromStart.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\HideAdd.tiff => C:\Users\Admin\Pictures\HideAdd.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ReceiveWait.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\SetInstall.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SetInstall.tiff => C:\Users\Admin\Pictures\SetInstall.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\AddDebug.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ExitSelect.tiff => C:\Users\Admin\Pictures\ExitSelect.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ExitSelect.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 |
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/1096-59-0x0000000075281000-0x0000000075283000-memory.dmp
memory/1100-60-0x0000000000000000-mapping.dmp
memory/1964-61-0x0000000000000000-mapping.dmp
memory/384-62-0x0000000000000000-mapping.dmp
memory/696-63-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-04-27 04:20
Reported
2021-04-27 04:22
Platform
win10v20210408
Max time kernel
27s
Max time network
68s
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\SetStep.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 opened for modification | 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\DenyUnlock.tiff => C:\Users\Admin\Pictures\DenyUnlock.tiff.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\MoveExport.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\PushExit.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\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\StepUnpublish.raw.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 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\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\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\SetUnlock.tiff | 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\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\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\SetUnlock.tiff.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 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\PushExit.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 3440 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 856 wrote to memory of 3440 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 3440 wrote to memory of 2716 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 3440 wrote to memory of 2716 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 856 wrote to memory of 3040 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 856 wrote to memory of 3040 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 3040 wrote to memory of 3840 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 3040 wrote to memory of 3840 | 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/3440-114-0x0000000000000000-mapping.dmp
memory/2716-115-0x0000000000000000-mapping.dmp
memory/3040-116-0x0000000000000000-mapping.dmp
memory/3840-117-0x0000000000000000-mapping.dmp