Malware Analysis Report

2024-10-16 03:25

Sample ID 240813-b1bfpsxeje
Target 2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer
SHA256 2d5213ab289a6fba4764904f7f06b16ca8f31f5593370efa148feb679095f061
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2d5213ab289a6fba4764904f7f06b16ca8f31f5593370efa148feb679095f061

Threat Level: Known bad

The file 2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer was found to be: Known bad.

Malicious Activity Summary

babuk defense_evasion discovery execution impact ransomware

Babuk Locker

Deletes shadow copies

Renames multiple (171) files with added filename extension

Renames multiple (208) files with added filename extension

Checks computer location settings

Enumerates connected drives

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Uses Volume Shadow Copy service COM API

Suspicious behavior: EnumeratesProcesses

Interacts with shadow copies

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-13 01:36

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-13 01:36

Reported

2024-08-13 01:38

Platform

win10v2004-20240802-en

Max time kernel

127s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware defense_evasion impact execution

Renames multiple (171) 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\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_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\2024-08-13_b97789f5e43131e57253c63c3f646715_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\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe

"C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp

Files

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

MD5 d0611c32100542de4fd6f77f2a2f701b
SHA1 924bd0ab0c5a68dd27c9978805a1a97c5b3088ff
SHA256 c37cbb2245e2e33357aa382e07b3eb7868cb7b6832b114e49889c071fc39c6e9
SHA512 d9bdf63358f3ce5bbac0f9305e3785e592742a6c47a76da95c73f17a6b719843687ca6b283c9e0f31d16d12bfee8f7a5659c4ef38e3492fd023c4e2bfdeb2b79

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-13 01:36

Reported

2024-08-13 01:38

Platform

win7-20240704-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware defense_evasion impact execution

Renames multiple (208) files with added filename extension

ransomware

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_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\2024-08-13_b97789f5e43131e57253c63c3f646715_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\2024-08-13_b97789f5e43131e57253c63c3f646715_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 2376 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2376 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2376 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2376 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2520 wrote to memory of 2368 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2520 wrote to memory of 2368 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2520 wrote to memory of 2368 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2376 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2376 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2376 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2376 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2784 wrote to memory of 2692 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2784 wrote to memory of 2692 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2784 wrote to memory of 2692 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\2024-08-13_b97789f5e43131e57253c63c3f646715_babuk_destroyer.exe

"C:\Users\Admin\AppData\Local\Temp\2024-08-13_b97789f5e43131e57253c63c3f646715_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 Restore Your Files.txt

MD5 d0611c32100542de4fd6f77f2a2f701b
SHA1 924bd0ab0c5a68dd27c9978805a1a97c5b3088ff
SHA256 c37cbb2245e2e33357aa382e07b3eb7868cb7b6832b114e49889c071fc39c6e9
SHA512 d9bdf63358f3ce5bbac0f9305e3785e592742a6c47a76da95c73f17a6b719843687ca6b283c9e0f31d16d12bfee8f7a5659c4ef38e3492fd023c4e2bfdeb2b79