Analysis Overview
SHA256
8140004ff3cf4923c928708505754497e48d26d822a95d63bd2ed54e14f19766
Threat Level: Known bad
The file BABUK_2021-01-14_02-37.bin was found to be: Known bad.
Malicious Activity Summary
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
UPX packed file
Drops startup file
Enumerates connected drives
Enumerates physical storage devices
Interacts with shadow copies
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-03-10 22:38
Signatures
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2021-03-10 22:38
Reported
2021-03-10 22:41
Platform
win7v20201028
Max time kernel
22s
Max time network
29s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\ExpandRestart.raw => C:\Users\Admin\Pictures\ExpandRestart.raw.babyk | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\LockRedo.tif => C:\Users\Admin\Pictures\LockRedo.tif.babyk | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RegisterInitialize.raw => C:\Users\Admin\Pictures\RegisterInitialize.raw.babyk | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SwitchCheckpoint.raw => C:\Users\Admin\Pictures\SwitchCheckpoint.raw.babyk | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.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
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\BABUK_2021-01-14_02-37.bin.exe
"C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.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/644-2-0x0000000006690000-0x00000000066A1000-memory.dmp
memory/644-3-0x00000000765E1000-0x00000000765E3000-memory.dmp
memory/644-5-0x0000000006BA0000-0x0000000006BB1000-memory.dmp
memory/644-4-0x0000000006790000-0x00000000067A1000-memory.dmp
memory/1068-6-0x0000000000000000-mapping.dmp
memory/1964-7-0x0000000000000000-mapping.dmp
memory/644-8-0x0000000000220000-0x000000000022B000-memory.dmp
memory/644-9-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1588-10-0x0000000000000000-mapping.dmp
memory/824-11-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-03-10 22:38
Reported
2021-03-10 22:41
Platform
win10v20201028
Max time kernel
61s
Max time network
122s
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\PingWrite.tiff | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RegisterWrite.raw => C:\Users\Admin\Pictures\RegisterWrite.raw.babyk | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.bin.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\PingWrite.tiff => C:\Users\Admin\Pictures\PingWrite.tiff.babyk | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.bin.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\How To Restore Your Files.txt | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.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
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 SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe | N/A |
| N/A | N/A | C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4688 wrote to memory of 3640 | N/A | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.bin.exe | C:\Windows\System32\cmd.exe |
| PID 4688 wrote to memory of 3640 | N/A | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.bin.exe | C:\Windows\System32\cmd.exe |
| PID 3640 wrote to memory of 1172 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 3640 wrote to memory of 1172 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 4688 wrote to memory of 832 | N/A | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.bin.exe | C:\Windows\System32\cmd.exe |
| PID 4688 wrote to memory of 832 | N/A | C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.bin.exe | C:\Windows\System32\cmd.exe |
| PID 832 wrote to memory of 520 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
| PID 832 wrote to memory of 520 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\vssadmin.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.bin.exe
"C:\Users\Admin\AppData\Local\Temp\BABUK_2021-01-14_02-37.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\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
"C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
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/4688-2-0x0000000006B40000-0x0000000006B41000-memory.dmp
memory/4688-3-0x0000000006CF0000-0x0000000006CF1000-memory.dmp
memory/4688-4-0x00000000074F0000-0x00000000074F1000-memory.dmp
memory/3640-5-0x0000000000000000-mapping.dmp
memory/4688-6-0x0000000005010000-0x000000000501B000-memory.dmp
memory/4688-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1172-8-0x0000000000000000-mapping.dmp
memory/832-9-0x0000000000000000-mapping.dmp
memory/520-10-0x0000000000000000-mapping.dmp