babuk | d359e7a2b94bda43505009956592645e4e96d801f326610aac15eb776b0bb155

Resubmissions

07/03/2025, 08:18

250307-j7nnlsxmv6 10

07/03/2025, 07:48

250307-jm45vsxkv9 10

Analysis

max time kernel
184s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07/03/2025, 07:48

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General

Target

3_args_f_2_multibabyk_ST_1.exe
Size

87KB
MD5

9183aa0243debfb1c483f060986dab1b
SHA1

206865709f3f5d286e7c6cfab4a8815517d10715
SHA256

d359e7a2b94bda43505009956592645e4e96d801f326610aac15eb776b0bb155
SHA512

10f9bc9ce7810b57adc52089313db7a35181151432a8250963179b3785e693827bf68d1716291612a831eeda96f906316a54935001cf279efd327e2f34d15ca1
SSDEEP

1536:kcfdhe/yPhBg3AGmisrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2CaE:Jhe/yPaJ/srQLOJgY8Zp8LHD4XWaNH7u

Score

10^/10

babuk defense_evasion discovery execution impact ransomware

Malware Config

Signatures

Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
ransomware babuk
Babuk family
babuk
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047
Renames multiple (178) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\K:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\Z:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\X:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\V:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\B:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\P:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\A:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\E:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\O:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\H:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\L:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\N:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\M:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\S:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\F:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\W:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\R:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\T:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\Y:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\U:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\J:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\Q:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\I:	3_args_f_2_multibabyk_ST_1.exe
File opened (read-only)	\??\G:	3_args_f_2_multibabyk_ST_1.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3_args_f_2_multibabyk_ST_1.exe

Interacts with shadow copies 3 TTPs 2 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2180	vssadmin.exe
2288	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2376	3_args_f_2_multibabyk_ST_1.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2860	vssvc.exe
Token: SeRestorePrivilege	2860	vssvc.exe
Token: SeAuditPrivilege	2860	vssvc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2468	2376	3_args_f_2_multibabyk_ST_1.exe	30
PID 2376 wrote to memory of 2468	2376	3_args_f_2_multibabyk_ST_1.exe	30
PID 2376 wrote to memory of 2468	2376	3_args_f_2_multibabyk_ST_1.exe	30
PID 2376 wrote to memory of 2468	2376	3_args_f_2_multibabyk_ST_1.exe	30
PID 2468 wrote to memory of 2180	2468	cmd.exe	32
PID 2468 wrote to memory of 2180	2468	cmd.exe	32
PID 2468 wrote to memory of 2180	2468	cmd.exe	32
PID 2376 wrote to memory of 856	2376	3_args_f_2_multibabyk_ST_1.exe	35
PID 2376 wrote to memory of 856	2376	3_args_f_2_multibabyk_ST_1.exe	35
PID 2376 wrote to memory of 856	2376	3_args_f_2_multibabyk_ST_1.exe	35
PID 2376 wrote to memory of 856	2376	3_args_f_2_multibabyk_ST_1.exe	35
PID 856 wrote to memory of 2288	856	cmd.exe	37
PID 856 wrote to memory of 2288	856	cmd.exe	37
PID 856 wrote to memory of 2288	856	cmd.exe	37

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\3_args_f_2_multibabyk_ST_1.exe
"C:\Users\Admin\AppData\Local\Temp\3_args_f_2_multibabyk_ST_1.exe"
1⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2468
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2180
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:856
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2288

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\How To Restore Your Files.txt

Filesize
8KB

MD5
2af817219bb1d24a11ab839b9453b5f3

SHA1
f9ff9075f9472c41aeb93df2e439fe624dc143b0

SHA256
6a16454cad4534d51025f65277abaec0ff4a30082840154a35889445bb3ad0a0

SHA512
d443e149d8b097cc64b0bbbf65e3d660de43943a4b36ac4c41bfbdfe814fb895d7ba97128aa1235b85d2292b79afc451fbcb89cc6a56d33ecff7d93e18a15c30

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