Malware Analysis Report

2024-10-16 03:24

Sample ID 211107-mgjhrafcdj
Target a499f810c2e52fe9f8adcd5817b2d985
SHA256 245e191bfe998ad9ef2d6b169af22f3c290e9950234f8ddd0f4a03cb3eebf761
Tags
babuk ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

245e191bfe998ad9ef2d6b169af22f3c290e9950234f8ddd0f4a03cb3eebf761

Threat Level: Known bad

The file a499f810c2e52fe9f8adcd5817b2d985 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

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Interacts with shadow copies

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-11-07 10:26

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-11-07 10:26

Reported

2021-11-07 10:28

Platform

win7-en-20211014

Max time kernel

119s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware

Modifies extensions of user files

ransomware
Description Indicator Process Target
File renamed C:\Users\Admin\Pictures\ProtectWatch.png => C:\Users\Admin\Pictures\ProtectWatch.png.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\SendPublish.tiff.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\StartUnlock.tiff => C:\Users\Admin\Pictures\StartUnlock.tiff.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\UnprotectExport.png => C:\Users\Admin\Pictures\UnprotectExport.png.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\CopyMove.tiff.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\ExitConfirm.tiff => C:\Users\Admin\Pictures\ExitConfirm.tiff.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\ExitConfirm.tiff.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\ReceiveDeny.crw => C:\Users\Admin\Pictures\ReceiveDeny.crw.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\RenameRemove.crw.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\SendPublish.tiff => C:\Users\Admin\Pictures\SendPublish.tiff.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\WaitResume.tif => C:\Users\Admin\Pictures\WaitResume.tif.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\InvokeConvertFrom.png => C:\Users\Admin\Pictures\InvokeConvertFrom.png.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\SendPublish.tiff C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\StartUnlock.tiff C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\ReceiveDeny.crw.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\StartUnlock.tiff.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\WaitResume.tif.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\CopyMove.tiff C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\InvokeConvertFrom.png.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\PushSet.crw.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\PushSet.crw => C:\Users\Admin\Pictures\PushSet.crw.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\RenameRemove.crw => C:\Users\Admin\Pictures\RenameRemove.crw.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\UnprotectExport.png.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\ExitConfirm.tiff C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\CopyMove.tiff => C:\Users\Admin\Pictures\CopyMove.tiff.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\ProtectWatch.png.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.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\a499f810c2e52fe9f8adcd5817b2d985.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 820 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe C:\Windows\System32\cmd.exe
PID 820 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe C:\Windows\System32\cmd.exe
PID 820 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe C:\Windows\System32\cmd.exe
PID 820 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe C:\Windows\System32\cmd.exe
PID 1500 wrote to memory of 1652 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1500 wrote to memory of 1652 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1500 wrote to memory of 1652 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 820 wrote to memory of 1968 N/A C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe C:\Windows\System32\cmd.exe
PID 820 wrote to memory of 1968 N/A C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe C:\Windows\System32\cmd.exe
PID 820 wrote to memory of 1968 N/A C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe C:\Windows\System32\cmd.exe
PID 820 wrote to memory of 1968 N/A C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe C:\Windows\System32\cmd.exe
PID 1968 wrote to memory of 828 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1968 wrote to memory of 828 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1968 wrote to memory of 828 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe

"C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.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/820-55-0x0000000075821000-0x0000000075823000-memory.dmp

memory/1500-56-0x0000000000000000-mapping.dmp

memory/1652-57-0x0000000000000000-mapping.dmp

memory/1968-58-0x0000000000000000-mapping.dmp

memory/828-59-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-11-07 10:26

Reported

2021-11-07 10:28

Platform

win10-en-20211104

Max time kernel

119s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.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\InstallLock.png.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\TestExit.tiff C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\SyncOut.raw => C:\Users\Admin\Pictures\SyncOut.raw.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\TestExit.tiff => C:\Users\Admin\Pictures\TestExit.tiff.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\SyncOut.raw.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened for modification C:\Users\Admin\Pictures\TestExit.tiff.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File renamed C:\Users\Admin\Pictures\InstallLock.png => C:\Users\Admin\Pictures\InstallLock.png.babyk C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.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\a499f810c2e52fe9f8adcd5817b2d985.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.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\a499f810c2e52fe9f8adcd5817b2d985.exe

"C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.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
NL 104.80.224.57:443 tcp
US 8.8.8.8:53 time.windows.com udp
NL 40.119.148.38:123 time.windows.com udp
US 8.8.8.8:53 sv.symcb.com udp
US 93.184.220.29:80 sv.symcb.com tcp
US 8.8.8.8:53 s.symcb.com udp
US 72.21.91.29:80 s.symcb.com tcp
US 8.8.8.8:53 ts-crl.ws.symantec.com udp
US 93.184.220.29:80 ts-crl.ws.symantec.com tcp
US 93.184.220.29:80 ts-crl.ws.symantec.com tcp

Files

memory/2796-118-0x0000000000000000-mapping.dmp

memory/1012-119-0x0000000000000000-mapping.dmp

memory/408-120-0x0000000000000000-mapping.dmp

memory/824-121-0x0000000000000000-mapping.dmp