Analysis Overview
SHA256
cb7cd5de34353ff74b8e1f829cffc8d9532b2652fe2d832fa5e57c30c5bde2a8
Threat Level: Known bad
The file e_win.bin.zip 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
2021-08-10 00:23
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-08-10 00:23
Reported
2021-08-10 00:26
Platform
win7v20210410
Max time kernel
17s
Max time network
47s
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\SplitInstall.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConvertFromExport.raw => C:\Users\Admin\Pictures\ConvertFromExport.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ConvertFromExport.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\FormatHide.raw => C:\Users\Admin\Pictures\FormatHide.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\FormatHide.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\MergeShow.tif => C:\Users\Admin\Pictures\MergeShow.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\MergeShow.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SplitInstall.crw => C:\Users\Admin\Pictures\SplitInstall.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.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.bin.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.bin.exe
"C:\Users\Admin\AppData\Local\Temp\e_win.bin.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/1724-60-0x0000000075161000-0x0000000075163000-memory.dmp
memory/1300-61-0x0000000000000000-mapping.dmp
memory/1372-62-0x0000000000000000-mapping.dmp
memory/620-63-0x0000000000000000-mapping.dmp
memory/1392-64-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-08-10 00:23
Reported
2021-08-10 00:26
Platform
win10v20210408
Max time kernel
18s
Max time network
123s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\ImportSync.png => C:\Users\Admin\Pictures\ImportSync.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ImportSync.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\InitializeFormat.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\InitializeFormat.tiff => C:\Users\Admin\Pictures\InitializeFormat.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\InitializeFormat.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RestoreMove.png => C:\Users\Admin\Pictures\RestoreMove.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RestoreMove.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.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.bin.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.bin.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 3492 wrote to memory of 2560 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | C:\Windows\System32\cmd.exe |
| PID 3492 wrote to memory of 2560 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | C:\Windows\System32\cmd.exe |
| PID 2560 wrote to memory of 3560 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 2560 wrote to memory of 3560 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 3492 wrote to memory of 3760 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | C:\Windows\System32\cmd.exe |
| PID 3492 wrote to memory of 3760 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | C:\Windows\System32\cmd.exe |
| PID 3760 wrote to memory of 4008 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 3760 wrote to memory of 4008 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe
"C:\Users\Admin\AppData\Local\Temp\e_win.bin.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/2560-114-0x0000000000000000-mapping.dmp
memory/3560-115-0x0000000000000000-mapping.dmp
memory/3760-116-0x0000000000000000-mapping.dmp
memory/4008-117-0x0000000000000000-mapping.dmp