Malware Analysis Report

2024-10-16 03:24

Sample ID 210601-wtr4yft28s
Target babuk.7z
SHA256 06f91fc7261d927a8b95818eec6fd925ea44eb5e4cddc914818940e1ffe0c69b
Tags
babuk ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

06f91fc7261d927a8b95818eec6fd925ea44eb5e4cddc914818940e1ffe0c69b

Threat Level: Known bad

The file babuk.7z was found to be: Known bad.

Malicious Activity Summary

babuk ransomware

Babuk Locker

Deletes shadow copies

Modifies extensions of user files

Enumerates connected drives

Enumerates physical storage devices

Interacts with shadow copies

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-06-01 17:46

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2021-06-01 17:46

Reported

2021-06-01 17:49

Platform

win10v20210408

Max time kernel

29s

Max time network

69s

Command Line

"C:\Users\Admin\AppData\Local\Temp\babuk.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware

Modifies extensions of user files

ransomware
Description Indicator Process Target
File opened for modification C:\Users\Admin\Pictures\CheckpointRename.raw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\CloseBlock.tiff => C:\Users\Admin\Pictures\CloseBlock.tiff.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\CloseBlock.tiff.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\GroupUnregister.tiff.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\LimitSend.raw => C:\Users\Admin\Pictures\LimitSend.raw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\RestoreDisconnect.crw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\StopPing.raw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\CloseBlock.tiff C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\ConnectOut.png => C:\Users\Admin\Pictures\ConnectOut.png.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\LimitSend.raw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\RestoreDisconnect.crw => C:\Users\Admin\Pictures\RestoreDisconnect.crw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\CheckpointRename.raw => C:\Users\Admin\Pictures\CheckpointRename.raw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\ConnectOut.png.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\GroupUnregister.tiff => C:\Users\Admin\Pictures\GroupUnregister.tiff.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\StopPing.raw => C:\Users\Admin\Pictures\StopPing.raw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\GroupUnregister.tiff C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\UnblockDebug.raw => C:\Users\Admin\Pictures\UnblockDebug.raw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\UnblockDebug.raw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A

Enumerates connected drives

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

Enumerates physical storage devices

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\babuk.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\babuk.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

Processes

C:\Users\Admin\AppData\Local\Temp\babuk.exe

"C:\Users\Admin\AppData\Local\Temp\babuk.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

memory/4024-114-0x0000000000000000-mapping.dmp

memory/2948-115-0x0000000000000000-mapping.dmp

memory/2068-116-0x0000000000000000-mapping.dmp

memory/3504-117-0x0000000000000000-mapping.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2021-06-01 17:46

Reported

2021-06-01 17:49

Platform

win7v20210410

Max time kernel

91s

Max time network

92s

Command Line

"C:\Users\Admin\AppData\Local\Temp\babuk.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware

Modifies extensions of user files

ransomware
Description Indicator Process Target
File opened for modification C:\Users\Admin\Pictures\ExitSelect.tiff C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\ExitSelect.tiff.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\ReceiveWait.tif.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\HideAdd.tiff => C:\Users\Admin\Pictures\HideAdd.tiff.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\HideAdd.tiff.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\ReceiveWait.tif => C:\Users\Admin\Pictures\ReceiveWait.tif.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\AddDebug.crw => C:\Users\Admin\Pictures\AddDebug.crw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\AddDebug.crw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\HideAdd.tiff C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\SetInstall.tiff => C:\Users\Admin\Pictures\SetInstall.tiff.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\SetInstall.tiff C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\SetInstall.tiff.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\ConvertFromStart.crw => C:\Users\Admin\Pictures\ConvertFromStart.crw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\ConvertFromStart.crw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\ExitSelect.tiff => C:\Users\Admin\Pictures\ExitSelect.tiff.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File renamed C:\Users\Admin\Pictures\ProtectWrite.raw => C:\Users\Admin\Pictures\ProtectWrite.raw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A
File opened for modification C:\Users\Admin\Pictures\ProtectWrite.raw.babyk C:\Users\Admin\AppData\Local\Temp\babuk.exe N/A

Enumerates connected drives

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

Enumerates physical storage devices

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\babuk.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 1096 wrote to memory of 1980 N/A C:\Users\Admin\AppData\Local\Temp\babuk.exe C:\Windows\System32\cmd.exe
PID 1096 wrote to memory of 1980 N/A C:\Users\Admin\AppData\Local\Temp\babuk.exe C:\Windows\System32\cmd.exe
PID 1096 wrote to memory of 1980 N/A C:\Users\Admin\AppData\Local\Temp\babuk.exe C:\Windows\System32\cmd.exe
PID 1096 wrote to memory of 1980 N/A C:\Users\Admin\AppData\Local\Temp\babuk.exe C:\Windows\System32\cmd.exe
PID 1980 wrote to memory of 1772 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1980 wrote to memory of 1772 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1980 wrote to memory of 1772 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1096 wrote to memory of 1208 N/A C:\Users\Admin\AppData\Local\Temp\babuk.exe C:\Windows\System32\cmd.exe
PID 1096 wrote to memory of 1208 N/A C:\Users\Admin\AppData\Local\Temp\babuk.exe C:\Windows\System32\cmd.exe
PID 1096 wrote to memory of 1208 N/A C:\Users\Admin\AppData\Local\Temp\babuk.exe C:\Windows\System32\cmd.exe
PID 1096 wrote to memory of 1208 N/A C:\Users\Admin\AppData\Local\Temp\babuk.exe C:\Windows\System32\cmd.exe
PID 1208 wrote to memory of 1932 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1208 wrote to memory of 1932 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1208 wrote to memory of 1932 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe

Processes

C:\Users\Admin\AppData\Local\Temp\babuk.exe

"C:\Users\Admin\AppData\Local\Temp\babuk.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

memory/1096-59-0x0000000075281000-0x0000000075283000-memory.dmp

memory/1980-60-0x0000000000000000-mapping.dmp

memory/1772-61-0x0000000000000000-mapping.dmp

memory/1208-62-0x0000000000000000-mapping.dmp

memory/1932-63-0x0000000000000000-mapping.dmp