Analysis Overview
SHA256
1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02
Threat Level: Known bad
The file 1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample was found to be: Known bad.
Malicious Activity Summary
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
Drops startup file
Enumerates connected drives
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Interacts with shadow copies
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-07-26 12:57
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-07-26 12:57
Reported
2021-07-26 13:21
Platform
win7v20210408
Max time kernel
58s
Max time network
21s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\EnterRevoke.crw => C:\Users\Admin\Pictures\EnterRevoke.crw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\UseFind.raw => C:\Users\Admin\Pictures\UseFind.raw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\DisableSuspend.tif => C:\Users\Admin\Pictures\DisableSuspend.tif.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\BackupEdit.tiff => C:\Users\Admin\Pictures\BackupEdit.tiff.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\CompleteRemove.tif => C:\Users\Admin\Pictures\CompleteRemove.tif.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ExpandSuspend.crw => C:\Users\Admin\Pictures\ExpandSuspend.crw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\FindDebug.crw => C:\Users\Admin\Pictures\FindDebug.crw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\SubmitSuspend.tiff | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SubmitSuspend.tiff => C:\Users\Admin\Pictures\SubmitSuspend.tiff.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\AssertPush.png => C:\Users\Admin\Pictures\AssertPush.png.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\CloseUnblock.raw => C:\Users\Admin\Pictures\CloseUnblock.raw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\CheckpointRestart.crw => C:\Users\Admin\Pictures\CheckpointRestart.crw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\InstallStop.crw => C:\Users\Admin\Pictures\InstallStop.crw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\StartUse.tif => C:\Users\Admin\Pictures\StartUse.tif.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\BackupEdit.tiff | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.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\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe
"C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.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 | 94.130.108.214:443 | tcp | |
| N/A | 128.31.0.39:9101 | tcp |
Files
memory/1988-60-0x0000000075B31000-0x0000000075B33000-memory.dmp
memory/1976-61-0x0000000000000000-mapping.dmp
memory/1936-62-0x0000000000000000-mapping.dmp
memory/1808-63-0x0000000000000000-mapping.dmp
memory/1592-64-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-07-26 12:57
Reported
2021-07-26 13:21
Platform
win10v20210410
Max time kernel
82s
Max time network
135s
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\ConvertConnect.tiff | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConvertConnect.tiff => C:\Users\Admin\Pictures\ConvertConnect.tiff.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\FormatRemove.png => C:\Users\Admin\Pictures\FormatRemove.png.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.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\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.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
Processes
C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.exe
"C:\Users\Admin\AppData\Local\Temp\1b9412ca5e9deb29aeaa37be05ae8d0a8a636c12fdff8c17032aa017f6075c02.sample.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/2796-114-0x0000000000000000-mapping.dmp
memory/4060-115-0x0000000000000000-mapping.dmp
memory/3872-116-0x0000000000000000-mapping.dmp
memory/2244-117-0x0000000000000000-mapping.dmp