Analysis
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max time kernel
76s -
max time network
47s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
07-12-2022 11:03
Static task
static1
Behavioral task
behavioral1
Sample
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe
Resource
win10v2004-20220812-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
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SSDEEP
24576:B0cwn8nZ9FAQKlPntIQxbU5Wj1Lj8EAUbv170CrKwoUY:I8Z9FxaPuQxbUu1LjUUR7mUY
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 7 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exedescription ioc process File renamed C:\Users\Admin\Pictures\BlockWatch.raw => C:\Users\Admin\Pictures\BlockWatch.raw.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened for modification C:\Users\Admin\Pictures\BlockWatch.raw.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened for modification C:\Users\Admin\Pictures\PublishCheckpoint.tiff cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File renamed C:\Users\Admin\Pictures\PublishCheckpoint.tiff => C:\Users\Admin\Pictures\PublishCheckpoint.tiff.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened for modification C:\Users\Admin\Pictures\PublishCheckpoint.tiff.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File renamed C:\Users\Admin\Pictures\UnblockWrite.png => C:\Users\Admin\Pictures\UnblockWrite.png.babyk cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened for modification C:\Users\Admin\Pictures\UnblockWrite.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) \??\O: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\A: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\S: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\J: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\L: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\Z: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\Q: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\R: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\U: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\K: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\X: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\B: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\T: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\Y: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\F: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\G: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\V: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\W: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\E: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\I: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\P: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\H: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\N: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe File opened (read-only) \??\M: cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 10 IoCs
Processes:
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exepid process 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe 1044 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 1760 vssadmin.exe 1932 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exepid process 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
vssvc.exedescription pid process Token: SeBackupPrivilege 988 vssvc.exe Token: SeRestorePrivilege 988 vssvc.exe Token: SeAuditPrivilege 988 vssvc.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.execmd.execmd.exedescription pid process target process PID 1044 wrote to memory of 1616 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe cmd.exe PID 1044 wrote to memory of 1616 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe cmd.exe PID 1044 wrote to memory of 1616 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe cmd.exe PID 1044 wrote to memory of 1616 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe cmd.exe PID 1616 wrote to memory of 1760 1616 cmd.exe vssadmin.exe PID 1616 wrote to memory of 1760 1616 cmd.exe vssadmin.exe PID 1616 wrote to memory of 1760 1616 cmd.exe vssadmin.exe PID 1044 wrote to memory of 1916 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe cmd.exe PID 1044 wrote to memory of 1916 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe cmd.exe PID 1044 wrote to memory of 1916 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe cmd.exe PID 1044 wrote to memory of 1916 1044 cf3bdf0f8ea4c8ece5f5a76524ab4c81fea6c3a1715b5a86b3ad4d397fca76f3.exe cmd.exe PID 1916 wrote to memory of 1932 1916 cmd.exe vssadmin.exe PID 1916 wrote to memory of 1932 1916 cmd.exe vssadmin.exe PID 1916 wrote to memory of 1932 1916 cmd.exe vssadmin.exe
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:1044 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:1616 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1760 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:1916 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1932
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:988