Analysis
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max time kernel
129s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
11-02-2022 09:13
Static task
static1
Behavioral task
behavioral1
Sample
babuk.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
babuk.exe
Resource
win10v2004-en-20220113
windows10-2004_x64
0 signatures
0 seconds
General
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Target
babuk.exe
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Size
79KB
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MD5
92832ae49373b56748817cb5398ed706
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SHA1
61e4505d605882b809d9c7f3dcbf163ff1678382
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SHA256
1e24560100d010c27cc19c59f9fe1531e4286ecb21fe53763165f30c5f58dc90
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SHA512
398ef0e5ffb6f914a2d1df23f12561153ef52ea28d345232cbb2daa84c43d1f1934be0c40d00b2502c2437c2733d0cdf75d24be6a8b47fc69648ad16c0bb4858
Score
10/10
Malware Config
Signatures
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Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies extensions of user files 14 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
babuk.exedescription ioc Process File renamed C:\Users\Admin\Pictures\UnlockUnpublish.tiff => C:\Users\Admin\Pictures\UnlockUnpublish.tiff.babyk babuk.exe File opened for modification C:\Users\Admin\Pictures\UnlockUnpublish.tiff.babyk babuk.exe File opened for modification C:\Users\Admin\Pictures\EditAdd.crw.babyk babuk.exe File opened for modification C:\Users\Admin\Pictures\UnlockUnpublish.tiff babuk.exe File renamed C:\Users\Admin\Pictures\UnlockSet.raw => C:\Users\Admin\Pictures\UnlockSet.raw.babyk babuk.exe File renamed C:\Users\Admin\Pictures\UnprotectGroup.crw => C:\Users\Admin\Pictures\UnprotectGroup.crw.babyk babuk.exe File renamed C:\Users\Admin\Pictures\EditAdd.crw => C:\Users\Admin\Pictures\EditAdd.crw.babyk babuk.exe File renamed C:\Users\Admin\Pictures\UninstallImport.tiff => C:\Users\Admin\Pictures\UninstallImport.tiff.babyk babuk.exe File opened for modification C:\Users\Admin\Pictures\UninstallImport.tiff babuk.exe File opened for modification C:\Users\Admin\Pictures\UninstallImport.tiff.babyk babuk.exe File opened for modification C:\Users\Admin\Pictures\UnlockSet.raw.babyk babuk.exe File renamed C:\Users\Admin\Pictures\AssertGroup.raw => C:\Users\Admin\Pictures\AssertGroup.raw.babyk babuk.exe File opened for modification C:\Users\Admin\Pictures\AssertGroup.raw.babyk babuk.exe File opened for modification C:\Users\Admin\Pictures\UnprotectGroup.crw.babyk babuk.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
babuk.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation babuk.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
babuk.exedescription ioc Process File opened (read-only) \??\S: babuk.exe File opened (read-only) \??\L: babuk.exe File opened (read-only) \??\E: babuk.exe File opened (read-only) \??\R: babuk.exe File opened (read-only) \??\T: babuk.exe File opened (read-only) \??\U: babuk.exe File opened (read-only) \??\I: babuk.exe File opened (read-only) \??\O: babuk.exe File opened (read-only) \??\V: babuk.exe File opened (read-only) \??\N: babuk.exe File opened (read-only) \??\W: babuk.exe File opened (read-only) \??\Y: babuk.exe File opened (read-only) \??\K: babuk.exe File opened (read-only) \??\M: babuk.exe File opened (read-only) \??\Q: babuk.exe File opened (read-only) \??\A: babuk.exe File opened (read-only) \??\F: babuk.exe File opened (read-only) \??\Z: babuk.exe File opened (read-only) \??\B: babuk.exe File opened (read-only) \??\P: babuk.exe File opened (read-only) \??\G: babuk.exe File opened (read-only) \??\H: babuk.exe File opened (read-only) \??\J: babuk.exe File opened (read-only) \??\X: babuk.exe -
Drops file in Windows directory 8 IoCs
Processes:
svchost.exeTiWorker.exedescription ioc Process File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm svchost.exe File opened for modification C:\Windows\SoftwareDistribution\ReportingEvents.log svchost.exe File opened for modification C:\Windows\Logs\CBS\CBS.log TiWorker.exe File opened for modification C:\Windows\WinSxS\pending.xml TiWorker.exe File opened for modification C:\Windows\WindowsUpdate.log svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.edb svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exevssadmin.exepid Process 3384 vssadmin.exe 1224 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
babuk.exepid Process 4376 babuk.exe 4376 babuk.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
vssvc.exesvchost.exeTiWorker.exedescription pid Process Token: SeBackupPrivilege 1556 vssvc.exe Token: SeRestorePrivilege 1556 vssvc.exe Token: SeAuditPrivilege 1556 vssvc.exe Token: SeShutdownPrivilege 4700 svchost.exe Token: SeCreatePagefilePrivilege 4700 svchost.exe Token: SeShutdownPrivilege 4700 svchost.exe Token: SeCreatePagefilePrivilege 4700 svchost.exe Token: SeShutdownPrivilege 4700 svchost.exe Token: SeCreatePagefilePrivilege 4700 svchost.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe Token: SeRestorePrivilege 1656 TiWorker.exe Token: SeSecurityPrivilege 1656 TiWorker.exe Token: SeBackupPrivilege 1656 TiWorker.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
babuk.execmd.execmd.exedescription pid Process procid_target PID 4376 wrote to memory of 2468 4376 babuk.exe 82 PID 4376 wrote to memory of 2468 4376 babuk.exe 82 PID 2468 wrote to memory of 3384 2468 cmd.exe 84 PID 2468 wrote to memory of 3384 2468 cmd.exe 84 PID 4376 wrote to memory of 2860 4376 babuk.exe 89 PID 4376 wrote to memory of 2860 4376 babuk.exe 89 PID 2860 wrote to memory of 1224 2860 cmd.exe 91 PID 2860 wrote to memory of 1224 2860 cmd.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\babuk.exe"C:\Users\Admin\AppData\Local\Temp\babuk.exe"1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4376 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:2468 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:3384
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:2860 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1224
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1556
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4700
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C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exeC:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1656