Analysis Overview
SHA256
30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8
Threat Level: Known bad
The file 30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.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
Interacts with shadow copies
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
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
win7v20210410
Max time kernel
53s
Max time network
16s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\RedoImport.crw => C:\Users\Admin\Pictures\RedoImport.crw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RenameLimit.tif => C:\Users\Admin\Pictures\RenameLimit.tif.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\NewFind.raw => C:\Users\Admin\Pictures\NewFind.raw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.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\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.sample.exe
"C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.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
Files
memory/768-60-0x0000000075EF1000-0x0000000075EF3000-memory.dmp
memory/2016-61-0x0000000000000000-mapping.dmp
memory/1232-62-0x0000000000000000-mapping.dmp
memory/1220-63-0x0000000000000000-mapping.dmp
memory/1652-64-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-07-26 12:57
Reported
2021-07-26 13:21
Platform
win10v20210408
Max time kernel
78s
Max time network
135s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\ConvertFromStop.raw => C:\Users\Admin\Pictures\ConvertFromStop.raw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\DenyRevoke.crw => C:\Users\Admin\Pictures\DenyRevoke.crw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ExportWrite.crw => C:\Users\Admin\Pictures\ExportWrite.crw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RenameUse.crw => C:\Users\Admin\Pictures\RenameUse.crw.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ShowStep.tif => C:\Users\Admin\Pictures\ShowStep.tif.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.sample.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\TestRestore.tif => C:\Users\Admin\Pictures\TestRestore.tif.__NIST_K571__ | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.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\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.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\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.sample.exe
"C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.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/3176-114-0x0000000000000000-mapping.dmp
memory/1928-115-0x0000000000000000-mapping.dmp
memory/4024-116-0x0000000000000000-mapping.dmp
memory/3952-117-0x0000000000000000-mapping.dmp