Analysis Overview
SHA256
9a089790e04683ebf37d9746e0284322f59c46eef2a86cc231839482f323e871
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
Suspicious use of WriteProcessMemory
Interacts with shadow copies
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-03-13 06:22
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-03-13 06:22
Reported
2021-03-13 06:24
Platform
win7v20201028
Max time kernel
5s
Max time network
12s
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\MeasureResolve.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\EditStart.tif => C:\Users\Admin\Pictures\EditStart.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\MeasureResolve.tiff => C:\Users\Admin\Pictures\MeasureResolve.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\MountFind.tif => C:\Users\Admin\Pictures\MountFind.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ResolveUnlock.raw => C:\Users\Admin\Pictures\ResolveUnlock.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\WriteResolve.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\EditStart.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\MeasureResolve.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\MountFind.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ResolveUnlock.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\WriteResolve.crw => C:\Users\Admin\Pictures\WriteResolve.crw.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/776-2-0x0000000076071000-0x0000000076073000-memory.dmp
memory/776-4-0x00000000023E0000-0x00000000023F1000-memory.dmp
memory/776-3-0x0000000001FD0000-0x0000000001FE1000-memory.dmp
memory/2012-5-0x0000000000000000-mapping.dmp
memory/2044-6-0x0000000000000000-mapping.dmp
memory/1144-7-0x0000000000000000-mapping.dmp
memory/516-8-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-03-13 06:22
Reported
2021-03-13 06:24
Platform
win10v20201028
Max time kernel
18s
Max time network
112s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\FormatPing.tiff => C:\Users\Admin\Pictures\FormatPing.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\FormatPing.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\MeasureMerge.crw => C:\Users\Admin\Pictures\MeasureMerge.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RedoSwitch.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RedoSwitch.tiff => C:\Users\Admin\Pictures\RedoSwitch.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RedoSwitch.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ConvertFromBlock.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConvertFromBlock.tiff => C:\Users\Admin\Pictures\ConvertFromBlock.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\MeasureMerge.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\WaitUninstall.tif => C:\Users\Admin\Pictures\WaitUninstall.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\WaitUninstall.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\FormatPing.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ConvertFromBlock.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 616 wrote to memory of 2900 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 616 wrote to memory of 2900 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 2900 wrote to memory of 804 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 2900 wrote to memory of 804 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 616 wrote to memory of 1288 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 616 wrote to memory of 1288 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 1288 wrote to memory of 3464 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 1288 wrote to memory of 3464 | 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/616-3-0x0000000003750000-0x0000000003751000-memory.dmp
memory/616-2-0x0000000002F50000-0x0000000002F51000-memory.dmp
memory/2900-4-0x0000000000000000-mapping.dmp
memory/804-5-0x0000000000000000-mapping.dmp
memory/1288-6-0x0000000000000000-mapping.dmp
memory/3464-7-0x0000000000000000-mapping.dmp