Malware Analysis Report

2024-10-16 03:25

Sample ID 240829-jvwtfszhqg
Target 2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer
SHA256 854918956a53b2d39abbf67677bf8ad3c2f2506d6690162b8f8abe1655b9f957
Tags
babuk defense_evasion discovery execution impact ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

854918956a53b2d39abbf67677bf8ad3c2f2506d6690162b8f8abe1655b9f957

Threat Level: Known bad

The file 2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer was found to be: Known bad.

Malicious Activity Summary

babuk defense_evasion discovery execution impact ransomware

Babuk Locker

Renames multiple (202) files with added filename extension

Renames multiple (181) files with added filename extension

Deletes shadow copies

Checks computer location settings

Enumerates connected drives

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Interacts with shadow copies

Uses Volume Shadow Copy service COM API

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-29 07:59

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-29 07:59

Reported

2024-08-29 08:02

Platform

win7-20240704-en

Max time kernel

14s

Max time network

18s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware defense_evasion impact execution

Renames multiple (202) files with added filename extension

ransomware

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A

Interacts with shadow copies

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\vssadmin.exe N/A
N/A N/A C:\Windows\system32\vssadmin.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1848 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1848 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1848 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1848 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2292 wrote to memory of 2744 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2292 wrote to memory of 2744 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2292 wrote to memory of 2744 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1848 wrote to memory of 1568 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1848 wrote to memory of 1568 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1848 wrote to memory of 1568 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1848 wrote to memory of 1568 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1568 wrote to memory of 1924 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1568 wrote to memory of 1924 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1568 wrote to memory of 1924 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe

"C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

Network

N/A

Files

C:\PerfLogs\How To Restore Your Files.txt

MD5 2af817219bb1d24a11ab839b9453b5f3
SHA1 f9ff9075f9472c41aeb93df2e439fe624dc143b0
SHA256 6a16454cad4534d51025f65277abaec0ff4a30082840154a35889445bb3ad0a0
SHA512 d443e149d8b097cc64b0bbbf65e3d660de43943a4b36ac4c41bfbdfe814fb895d7ba97128aa1235b85d2292b79afc451fbcb89cc6a56d33ecff7d93e18a15c30

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-29 07:59

Reported

2024-08-29 08:02

Platform

win10v2004-20240802-en

Max time kernel

121s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware defense_evasion impact execution

Renames multiple (181) files with added filename extension

ransomware

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe N/A

Interacts with shadow copies

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\vssadmin.exe N/A
N/A N/A C:\Windows\system32\vssadmin.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe

"C:\Users\Admin\AppData\Local\Temp\2024-08-29_dc053caf95e8e0d08fe445b6bede2706_babuk_destroyer.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

C:\Recovery\WindowsRE\How To Restore Your Files.txt

MD5 2af817219bb1d24a11ab839b9453b5f3
SHA1 f9ff9075f9472c41aeb93df2e439fe624dc143b0
SHA256 6a16454cad4534d51025f65277abaec0ff4a30082840154a35889445bb3ad0a0
SHA512 d443e149d8b097cc64b0bbbf65e3d660de43943a4b36ac4c41bfbdfe814fb895d7ba97128aa1235b85d2292b79afc451fbcb89cc6a56d33ecff7d93e18a15c30