Malware Analysis Report

2024-10-16 03:25

Sample ID 240904-a5q7aa1fqm
Target 2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer
SHA256 cb5e69c29c3e7d54245d3f32d8f4f153c9f6b6704c96c92bae513e28f01208de
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

cb5e69c29c3e7d54245d3f32d8f4f153c9f6b6704c96c92bae513e28f01208de

Threat Level: Known bad

The file 2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer was found to be: Known bad.

Malicious Activity Summary

babuk defense_evasion discovery execution impact ransomware

Babuk Locker

Renames multiple (192) files with added filename extension

Deletes shadow copies

Renames multiple (197) files with added filename extension

Checks computer location settings

Enumerates connected drives

Enumerates physical storage devices

Unsigned PE

System Location Discovery: System Language Discovery

Uses Volume Shadow Copy service COM API

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Interacts with shadow copies

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-04 00:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-04 00:48

Reported

2024-09-04 00:50

Platform

win7-20240903-en

Max time kernel

118s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware defense_evasion impact execution

Renames multiple (197) files with added filename extension

ransomware

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_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_cd80dc7644c812853899d925af527c5d_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_cd80dc7644c812853899d925af527c5d_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 2080 wrote to memory of 2704 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2080 wrote to memory of 2704 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2080 wrote to memory of 2704 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2080 wrote to memory of 2704 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2704 wrote to memory of 2780 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2704 wrote to memory of 2780 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2704 wrote to memory of 2780 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2080 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2080 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2080 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 2080 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe C:\Windows\System32\cmd.exe
PID 3020 wrote to memory of 2032 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 3020 wrote to memory of 2032 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 3020 wrote to memory of 2032 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_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe

"C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_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 00:48

Reported

2024-09-04 00:50

Platform

win10v2004-20240802-en

Max time kernel

130s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware defense_evasion impact execution

Renames multiple (192) files with added filename extension

ransomware

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_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_cd80dc7644c812853899d925af527c5d_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_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe

"C:\Users\Admin\AppData\Local\Temp\2024-09-04_cd80dc7644c812853899d925af527c5d_babuk_destroyer.exe"

C:\Windows\System32\cmd.exe

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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4324,i,12198811467968044966,17227406646827438786,262144 --variations-seed-version --mojo-platform-channel-handle=4140 /prefetch:8

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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

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

MD5 1cb251ec0d568de6a929b520c4aed8d1
SHA1 372ea08cab33e71c02c651dbc83a474d32c676ea
SHA256 982d9e3eb996f559e633f4d194def3761d909f5a3b647d1a851fead67c32c9d1
SHA512 eaf2c12742cb8c161bcbd84b032b9bb98999a23282542672ca01cc6edd268f7dce9987ad6b2bc79305634f89d90b90102bcd59a57e7135b8e3ceb93c0597117b