Analysis Overview
SHA256
f1719415abe4dcba0daef0a1e5c8994d1d3c0c659d3e0a11b34f307370dd8683
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
2021-04-05 04:36
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-04-05 04:36
Reported
2021-04-05 04:38
Platform
win7v20201028
Max time kernel
150s
Max time network
151s
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\RemoveStart.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\InitializeStep.tif => C:\Users\Admin\Pictures\InitializeStep.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\InitializeStep.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RemoveStart.tiff => C:\Users\Admin\Pictures\RemoveStart.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RemoveStart.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/1924-2-0x0000000075AE1000-0x0000000075AE3000-memory.dmp
memory/1924-3-0x0000000001E10000-0x0000000001E21000-memory.dmp
memory/1924-4-0x0000000002220000-0x0000000002231000-memory.dmp
memory/1996-5-0x0000000000000000-mapping.dmp
memory/1972-6-0x0000000000000000-mapping.dmp
memory/752-7-0x0000000000000000-mapping.dmp
memory/812-8-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-04-05 04:36
Reported
2021-04-05 04:38
Platform
win10v20201028
Max time kernel
17s
Max time network
112s
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\UnprotectUninstall.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RenameGrant.raw => C:\Users\Admin\Pictures\RenameGrant.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RenameGrant.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RenameReset.tif => C:\Users\Admin\Pictures\RenameReset.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RenameReset.tif.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\UnprotectUninstall.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\UnprotectUninstall.tiff => C:\Users\Admin\Pictures\UnprotectUninstall.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 3084 wrote to memory of 2796 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 3084 wrote to memory of 2796 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 2796 wrote to memory of 3924 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 2796 wrote to memory of 3924 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 3084 wrote to memory of 1332 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 3084 wrote to memory of 1332 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.exe | C:\Windows\System32\cmd.exe |
| PID 1332 wrote to memory of 3864 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 1332 wrote to memory of 3864 | 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/3084-2-0x0000000002F50000-0x0000000002F51000-memory.dmp
memory/3084-3-0x0000000003750000-0x0000000003751000-memory.dmp
memory/2796-4-0x0000000000000000-mapping.dmp
memory/3924-5-0x0000000000000000-mapping.dmp
memory/1332-6-0x0000000000000000-mapping.dmp
memory/3864-7-0x0000000000000000-mapping.dmp