Analysis Overview
SHA256
ea95f131bd9b49104d9e7ae83335254549ded9d71d557c6e4746740aecca2c85
Threat Level: Known bad
The file e_win.bin 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 AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-07-01 18:09
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-07-01 18:09
Reported
2021-07-01 18:13
Platform
win7v20210410
Max time kernel
123s
Max time network
170s
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\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 |
| 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 |
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/2016-59-0x0000000076A81000-0x0000000076A83000-memory.dmp
memory/1648-60-0x0000000000000000-mapping.dmp
memory/1772-61-0x0000000000000000-mapping.dmp
memory/1104-62-0x0000000000000000-mapping.dmp
memory/996-63-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-07-01 18:09
Reported
2021-07-01 18:12
Platform
win10v20210408
Max time kernel
17s
Max time network
115s
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\OpenProtect.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\OpenResume.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\EditSet.tiff => C:\Users\Admin\Pictures\EditSet.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\EditSet.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\WatchUninstall.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\WatchUninstall.tiff => C:\Users\Admin\Pictures\WatchUninstall.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\AssertStop.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\EnterComplete.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\GetSubmit.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\WatchUninstall.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\DisableEnable.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\EditSet.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\OpenProtect.tiff => C:\Users\Admin\Pictures\OpenProtect.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\AssertStop.raw => C:\Users\Admin\Pictures\AssertStop.raw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\EnterComplete.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\EnterComplete.tiff => C:\Users\Admin\Pictures\EnterComplete.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\InstallCompress.png => C:\Users\Admin\Pictures\InstallCompress.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\InstallCompress.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\OpenResume.png => C:\Users\Admin\Pictures\OpenResume.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\UseDebug.crw => C:\Users\Admin\Pictures\UseDebug.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\OpenProtect.tiff | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RegisterSplit.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\UseDebug.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\GetSubmit.crw => C:\Users\Admin\Pictures\GetSubmit.crw.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RegisterSplit.png => C:\Users\Admin\Pictures\RegisterSplit.png.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\DisableEnable.tiff => C:\Users\Admin\Pictures\DisableEnable.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\DisableEnable.tiff.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 528 wrote to memory of 636 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | C:\Windows\System32\cmd.exe |
| PID 528 wrote to memory of 636 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | C:\Windows\System32\cmd.exe |
| PID 636 wrote to memory of 3752 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 636 wrote to memory of 3752 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 528 wrote to memory of 1980 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | C:\Windows\System32\cmd.exe |
| PID 528 wrote to memory of 1980 | N/A | C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe | C:\Windows\System32\cmd.exe |
| PID 1980 wrote to memory of 3308 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 1980 wrote to memory of 3308 | 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
| Country | Destination | Domain | Proto |
| N/A | 142.251.36.35:443 | tcp | |
| N/A | 216.58.211.110:443 | tcp | |
| N/A | 216.58.208.109:443 | tcp | |
| N/A | 142.250.179.161:443 | tcp | |
| N/A | 172.217.17.74:443 | tcp | |
| N/A | 8.8.8.8:443 | tcp | |
| N/A | 8.8.8.8:443 | tcp | |
| N/A | 142.251.36.3:443 | tcp | |
| N/A | 31.13.83.36:443 | tcp | |
| N/A | 31.13.83.36:443 | tcp | |
| N/A | 65.9.77.70:443 | tcp | |
| N/A | 216.58.214.10:443 | tcp | |
| N/A | 8.8.8.8:443 | tcp | |
| N/A | 142.251.36.35:443 | tcp | |
| N/A | 142.250.179.131:443 | tcp | |
| N/A | 8.8.8.8:443 | tcp |
Files
memory/636-114-0x0000000000000000-mapping.dmp
memory/3752-115-0x0000000000000000-mapping.dmp
memory/1980-116-0x0000000000000000-mapping.dmp
memory/3308-117-0x0000000000000000-mapping.dmp