Malware Analysis Report

2024-10-16 03:25

Sample ID 240904-at3qyasemh
Target 2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer
SHA256 ec81f7109626235ef8936707f33ed435cb5948bc60838e32e28e089331726618
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

ec81f7109626235ef8936707f33ed435cb5948bc60838e32e28e089331726618

Threat Level: Known bad

The file 2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer was found to be: Known bad.

Malicious Activity Summary

babuk defense_evasion discovery execution impact ransomware

Babuk Locker

Renames multiple (217) files with added filename extension

Deletes shadow copies

Renames multiple (174) files with added filename extension

Checks computer location settings

Enumerates connected drives

Enumerates physical storage devices

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Uses Volume Shadow Copy service COM API

Interacts with shadow copies

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-04 00:31

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-04 00:31

Reported

2024-09-04 00:33

Platform

win7-20240903-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware defense_evasion impact execution

Renames multiple (217) files with added filename extension

ransomware

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_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\2024-09-04_37824a91b2270cb6650324a20d507172_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\2024-09-04_37824a91b2270cb6650324a20d507172_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 1620 wrote to memory of 2684 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1620 wrote to memory of 2684 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1620 wrote to memory of 2684 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1620 wrote to memory of 2684 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2684 wrote to memory of 2756 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2684 wrote to memory of 2756 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2684 wrote to memory of 2756 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1620 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1620 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1620 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 1620 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2752 wrote to memory of 2852 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2752 wrote to memory of 2852 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2752 wrote to memory of 2852 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\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe

"C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_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\Admin\How to decrypt your files.txt

MD5 1cb251ec0d568de6a929b520c4aed8d1
SHA1 372ea08cab33e71c02c651dbc83a474d32c676ea
SHA256 982d9e3eb996f559e633f4d194def3761d909f5a3b647d1a851fead67c32c9d1
SHA512 eaf2c12742cb8c161bcbd84b032b9bb98999a23282542672ca01cc6edd268f7dce9987ad6b2bc79305634f89d90b90102bcd59a57e7135b8e3ceb93c0597117b

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-04 00:31

Reported

2024-09-04 00:33

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware defense_evasion impact execution

Renames multiple (174) files with added filename extension

ransomware

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_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\2024-09-04_37824a91b2270cb6650324a20d507172_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\2024-09-04_37824a91b2270cb6650324a20d507172_babuk_destroyer.exe

"C:\Users\Admin\AppData\Local\Temp\2024-09-04_37824a91b2270cb6650324a20d507172_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\cmd.exe

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

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

Network

Country Destination Domain Proto
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Roaming\How to decrypt your files.txt

MD5 1cb251ec0d568de6a929b520c4aed8d1
SHA1 372ea08cab33e71c02c651dbc83a474d32c676ea
SHA256 982d9e3eb996f559e633f4d194def3761d909f5a3b647d1a851fead67c32c9d1
SHA512 eaf2c12742cb8c161bcbd84b032b9bb98999a23282542672ca01cc6edd268f7dce9987ad6b2bc79305634f89d90b90102bcd59a57e7135b8e3ceb93c0597117b