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Analysis
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max time kernel
198s -
max time network
204s -
platform
windows10-2004_x64 -
resource
win10v2004-20250217-en -
resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system -
submitted
07/03/2025, 07:50
Static task
static1
Behavioral task
behavioral1
Sample
11_memory_f_1_multibabyk_ST_1.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
11_memory_f_1_multibabyk_ST_1.exe
Resource
win10v2004-20250217-en
General
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Target
11_memory_f_1_multibabyk_ST_1.exe
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Size
87KB
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MD5
3f2e642dc312962a86dceb2fff35fd22
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SHA1
7ade3be0403d0dcda6172518d45a7cfd7c57ea50
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SHA256
71fe435814c3fecfc901b76d4f89bf09f9479ceacffc0fb00dbe5f37e4c9956f
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SHA512
18146d8168ef73decaeffda8302adfa4b788ab4879599551f549cb7d71bc2df19a927e1e7f65574601f7edaa6d43458c4023cd6c0a477665b99a357cf61b0dd0
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SSDEEP
1536:MQRJMCUzAtXsrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2NMNuQEoZF:PMCdpsrQLOJgY8Zp8LHD4XWaNH71dLd4
Malware Config
Signatures
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Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
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Babuk family
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (155) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-100612193-3312047696-905266872-1000\Control Panel\International\Geo\Nation 11_memory_f_1_multibabyk_ST_1.exe -
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\W: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\T: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\I: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\P: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\S: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\G: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\K: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\L: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\Q: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\Y: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\A: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\H: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\Z: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\X: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\V: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\B: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\E: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\O: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\N: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\R: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\U: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\J: 11_memory_f_1_multibabyk_ST_1.exe File opened (read-only) \??\M: 11_memory_f_1_multibabyk_ST_1.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 11_memory_f_1_multibabyk_ST_1.exe -
Interacts with shadow copies 3 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2248 vssadmin.exe 964 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 5208 11_memory_f_1_multibabyk_ST_1.exe 5208 11_memory_f_1_multibabyk_ST_1.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 2436 vssvc.exe Token: SeRestorePrivilege 2436 vssvc.exe Token: SeAuditPrivilege 2436 vssvc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 5208 wrote to memory of 5188 5208 11_memory_f_1_multibabyk_ST_1.exe 85 PID 5208 wrote to memory of 5188 5208 11_memory_f_1_multibabyk_ST_1.exe 85 PID 5188 wrote to memory of 2248 5188 cmd.exe 89 PID 5188 wrote to memory of 2248 5188 cmd.exe 89 PID 5208 wrote to memory of 5416 5208 11_memory_f_1_multibabyk_ST_1.exe 90 PID 5208 wrote to memory of 5416 5208 11_memory_f_1_multibabyk_ST_1.exe 90 PID 5416 wrote to memory of 964 5416 cmd.exe 94 PID 5416 wrote to memory of 964 5416 cmd.exe 94 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\11_memory_f_1_multibabyk_ST_1.exe"C:\Users\Admin\AppData\Local\Temp\11_memory_f_1_multibabyk_ST_1.exe"1⤵
- Checks computer location settings
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5208 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:5188 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:2248
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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:5416 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:964
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2436
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
8KB
MD52af817219bb1d24a11ab839b9453b5f3
SHA1f9ff9075f9472c41aeb93df2e439fe624dc143b0
SHA2566a16454cad4534d51025f65277abaec0ff4a30082840154a35889445bb3ad0a0
SHA512d443e149d8b097cc64b0bbbf65e3d660de43943a4b36ac4c41bfbdfe814fb895d7ba97128aa1235b85d2292b79afc451fbcb89cc6a56d33ecff7d93e18a15c30