Analysis
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max time kernel
42s -
max time network
45s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
05-07-2022 09:23
Static task
static1
Behavioral task
behavioral1
Sample
b0a010e5a9b353a11fb664501de91fc47878d89bf97cb57bc03428c7a45981b9.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
b0a010e5a9b353a11fb664501de91fc47878d89bf97cb57bc03428c7a45981b9.exe
Resource
win10v2004-20220414-en
Behavioral task
behavioral3
Sample
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe
Resource
win7-20220414-en
Behavioral task
behavioral4
Sample
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe
Resource
win10v2004-20220414-en
General
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Target
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe
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Size
875KB
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MD5
f1dd01a9e4b959e569250354d74e0423
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SHA1
7e2e524fd33261449571f1334868b17ef46e550d
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SHA256
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3
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SHA512
d878f63456abdc4a67abd0bd208faf1e77c6baf470f84afa345c6c013f519fc4cff10ae5b3cd700e5fabf11fee3c7e1b357d81e89f7c8c09ce9ef53c99d76202
Malware Config
Extracted
C:\How To Restore Your Files.txt
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 10 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exedescription ioc Process File renamed C:\Users\Admin\Pictures\RegisterSuspend.tif => C:\Users\Admin\Pictures\RegisterSuspend.tif.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened for modification C:\Users\Admin\Pictures\RegisterSuspend.tif.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File renamed C:\Users\Admin\Pictures\ImportExport.png => C:\Users\Admin\Pictures\ImportExport.png.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File renamed C:\Users\Admin\Pictures\ConvertFromUnlock.raw => C:\Users\Admin\Pictures\ConvertFromUnlock.raw.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened for modification C:\Users\Admin\Pictures\ConvertFromUnlock.raw.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened for modification C:\Users\Admin\Pictures\DisableConfirm.png.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File renamed C:\Users\Admin\Pictures\MoveResume.raw => C:\Users\Admin\Pictures\MoveResume.raw.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened for modification C:\Users\Admin\Pictures\MoveResume.raw.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened for modification C:\Users\Admin\Pictures\ImportExport.png.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File renamed C:\Users\Admin\Pictures\DisableConfirm.png => C:\Users\Admin\Pictures\DisableConfirm.png.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exedescription ioc Process File opened (read-only) \??\E: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\R: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\U: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\A: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\H: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\M: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\S: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\G: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\J: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\K: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\Q: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\I: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\O: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\F: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\Z: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\B: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\N: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\W: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\T: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\Y: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\P: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\L: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\X: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\V: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 9 IoCs
Processes:
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exepid Process 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Enumerates system info in registry 2 TTPs 2 IoCs
Processes:
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exedescription ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe -
Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exevssadmin.exepid Process 304 vssadmin.exe 1756 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exepid Process 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
vssvc.exedescription pid Process Token: SeBackupPrivilege 1388 vssvc.exe Token: SeRestorePrivilege 1388 vssvc.exe Token: SeAuditPrivilege 1388 vssvc.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.execmd.execmd.exedescription pid Process procid_target PID 1836 wrote to memory of 1792 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 28 PID 1836 wrote to memory of 1792 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 28 PID 1836 wrote to memory of 1792 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 28 PID 1836 wrote to memory of 1792 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 28 PID 1792 wrote to memory of 304 1792 cmd.exe 30 PID 1792 wrote to memory of 304 1792 cmd.exe 30 PID 1792 wrote to memory of 304 1792 cmd.exe 30 PID 1836 wrote to memory of 1048 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 34 PID 1836 wrote to memory of 1048 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 34 PID 1836 wrote to memory of 1048 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 34 PID 1836 wrote to memory of 1048 1836 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 34 PID 1048 wrote to memory of 1756 1048 cmd.exe 36 PID 1048 wrote to memory of 1756 1048 cmd.exe 36 PID 1048 wrote to memory of 1756 1048 cmd.exe 36
Processes
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C:\Users\Admin\AppData\Local\Temp\cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe"C:\Users\Admin\AppData\Local\Temp\cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1836 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:1792 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:304
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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:1048 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1756
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1388