Analysis Overview
SHA256
1e24560100d010c27cc19c59f9fe1531e4286ecb21fe53763165f30c5f58dc90
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 behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Interacts with shadow copies
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-06-28 14:59
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-06-28 14:59
Reported
2021-06-28 15:02
Platform
win7v20210408
Max time kernel
10s
Max time network
17s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\ClearAssert.tif => C:\Users\Admin\Pictures\ClearAssert.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ClearAssert.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\CheckpointRestart.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConnectUnprotect.tif => C:\Users\Admin\Pictures\ConnectUnprotect.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ConnectUnprotect.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConvertUninstall.tiff => C:\Users\Admin\Pictures\ConvertUninstall.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\OpenAdd.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\CheckpointRestart.crw => C:\Users\Admin\Pictures\CheckpointRestart.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ConvertUninstall.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ConvertUninstall.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\OpenAdd.raw => C:\Users\Admin\Pictures\OpenAdd.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RenameSearch.png => C:\Users\Admin\Pictures\RenameSearch.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RenameSearch.png.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/1824-59-0x0000000075FF1000-0x0000000075FF3000-memory.dmp
memory/2000-60-0x0000000000000000-mapping.dmp
memory/2020-61-0x0000000000000000-mapping.dmp
memory/1732-62-0x0000000000000000-mapping.dmp
memory/1244-63-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-06-28 14:59
Reported
2021-06-28 15:02
Platform
win10v20210408
Max time kernel
28s
Max time network
68s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\StopPing.raw => C:\Users\Admin\Pictures\StopPing.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\StopPing.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\LimitSend.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RestoreDisconnect.crw => C:\Users\Admin\Pictures\RestoreDisconnect.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\CloseBlock.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\LimitSend.raw => C:\Users\Admin\Pictures\LimitSend.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\GroupUnregister.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\GroupUnregister.tiff => C:\Users\Admin\Pictures\GroupUnregister.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\UnblockDebug.raw => C:\Users\Admin\Pictures\UnblockDebug.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\UnblockDebug.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\CloseBlock.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\CheckpointRename.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RestoreDisconnect.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConnectOut.png => C:\Users\Admin\Pictures\ConnectOut.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ConnectOut.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\GroupUnregister.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\CheckpointRename.raw => C:\Users\Admin\Pictures\CheckpointRename.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\CloseBlock.tiff => C:\Users\Admin\Pictures\CloseBlock.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 652 wrote to memory of 3200 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 652 wrote to memory of 3200 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 3200 wrote to memory of 4052 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 3200 wrote to memory of 4052 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 652 wrote to memory of 1184 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 652 wrote to memory of 1184 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 1184 wrote to memory of 2068 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 1184 wrote to memory of 2068 | 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/3200-114-0x0000000000000000-mapping.dmp
memory/4052-115-0x0000000000000000-mapping.dmp
memory/1184-116-0x0000000000000000-mapping.dmp
memory/2068-117-0x0000000000000000-mapping.dmp