babuk | ab5f9ab8a8072142d4b6ffcfdf50442cc729f67ce327b6afc73d7dbc51c49520

General

Target

2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
Size

79KB
MD5

535d7581519e1a575b54ed9b10a22f9e
SHA1

9d6092b82c80880dabe6e01608a68b655aef3ce5
SHA256

ab5f9ab8a8072142d4b6ffcfdf50442cc729f67ce327b6afc73d7dbc51c49520
SHA512

5672a1d5395158ba0d2032688e4bb571ac0d7c53bbb462891f807df430478b7412fe7e980c26020b2642caf490a34a4430012a6d03bd4c849e44298f9760666b
SSDEEP

1536:PJkWBeGovEb+srQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2vsf:DBeJs+srQLOJgY8Zp8LHD4XWaNH71dLE

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
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 (192) 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)	\??\Y:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\O:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\G:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\M:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\X:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\W:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\E:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\T:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\U:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\I:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\J:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\K:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\V:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\B:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\F:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\Q:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\L:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\Z:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\R:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\P:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\A:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\S:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\H:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
File opened (read-only)	\??\N:	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.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	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.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
2196	vssadmin.exe
2456	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1448	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2352	vssvc.exe
Token: SeRestorePrivilege	2352	vssvc.exe
Token: SeAuditPrivilege	2352	vssvc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 2700	1448	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe	30
PID 1448 wrote to memory of 2700	1448	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe	30
PID 1448 wrote to memory of 2700	1448	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe	30
PID 1448 wrote to memory of 2700	1448	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe	30
PID 2700 wrote to memory of 2196	2700	cmd.exe	32
PID 2700 wrote to memory of 2196	2700	cmd.exe	32
PID 2700 wrote to memory of 2196	2700	cmd.exe	32
PID 1448 wrote to memory of 1948	1448	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe	36
PID 1448 wrote to memory of 1948	1448	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe	36
PID 1448 wrote to memory of 1948	1448	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe	36
PID 1448 wrote to memory of 1948	1448	2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe	36
PID 1948 wrote to memory of 2456	1948	cmd.exe	38
PID 1948 wrote to memory of 2456	1948	cmd.exe	38
PID 1948 wrote to memory of 2456	1948	cmd.exe	38

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\2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-04_535d7581519e1a575b54ed9b10a22f9e_babuk_destroyer.exe"
1⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2700
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2196
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1948
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2456

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2352

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

1

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

1

T1006

Indicator Removal

2

T1070

File Deletion

2

T1070.004

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2

T1490

Replay Monitor

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Downloads

C:\PerfLogs\How to decrypt your files.txt

Filesize
4B

MD5
1cb251ec0d568de6a929b520c4aed8d1

SHA1
372ea08cab33e71c02c651dbc83a474d32c676ea

SHA256
982d9e3eb996f559e633f4d194def3761d909f5a3b647d1a851fead67c32c9d1

SHA512
eaf2c12742cb8c161bcbd84b032b9bb98999a23282542672ca01cc6edd268f7dce9987ad6b2bc79305634f89d90b90102bcd59a57e7135b8e3ceb93c0597117b

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Analysis

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