Malware Analysis Report

2024-10-16 03:24

Sample ID 210928-zqxg7adaf7
Target 093f098e70cc57a17d02323cbe6cd484
SHA256 ae6020a06d2a95cbe91b439f4433e87d198547dec629ab0900ccfe17e729cff1
Tags
babuk babyk ransomware babuk
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

ae6020a06d2a95cbe91b439f4433e87d198547dec629ab0900ccfe17e729cff1

Threat Level: Known bad

The file 093f098e70cc57a17d02323cbe6cd484 was found to be: Known bad.

Malicious Activity Summary

babuk babyk ransomware babuk

Babuk family

http://chuongdong.com/reverse%20engineering/2021/01/03/BabukRansomware/

Deletes shadow copies

Modifies extensions of user files

Enumerates connected drives

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Interacts with shadow copies

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-09-28 20:55

Signatures

Babuk family

babuk

http://chuongdong.com/reverse%20engineering/2021/01/03/BabukRansomware/

babuk babyk ransomware
Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-09-28 20:55

Reported

2021-09-28 20:57

Platform

win7v20210408

Max time kernel

9s

Max time network

34s

Command Line

"C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe"

Signatures

Deletes shadow copies

ransomware

Modifies extensions of user files

ransomware
Description Indicator Process Target
File renamed C:\Users\Admin\Pictures\ExitFind.crw => C:\Users\Admin\Pictures\ExitFind.crw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\ExitFind.crw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File renamed C:\Users\Admin\Pictures\ImportDebug.tif => C:\Users\Admin\Pictures\ImportDebug.tif.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\ImportDebug.tif.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File renamed C:\Users\Admin\Pictures\NewReset.raw => C:\Users\Admin\Pictures\NewReset.raw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\NewReset.raw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.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\093f098e70cc57a17d02323cbe6cd484.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 2044 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe C:\Windows\System32\cmd.exe
PID 2044 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe C:\Windows\System32\cmd.exe
PID 2044 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe C:\Windows\System32\cmd.exe
PID 2044 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe C:\Windows\System32\cmd.exe
PID 268 wrote to memory of 908 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 268 wrote to memory of 908 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 268 wrote to memory of 908 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2044 wrote to memory of 1544 N/A C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe C:\Windows\System32\cmd.exe
PID 2044 wrote to memory of 1544 N/A C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe C:\Windows\System32\cmd.exe
PID 2044 wrote to memory of 1544 N/A C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe C:\Windows\System32\cmd.exe
PID 2044 wrote to memory of 1544 N/A C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe C:\Windows\System32\cmd.exe
PID 1544 wrote to memory of 1616 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1544 wrote to memory of 1616 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1544 wrote to memory of 1616 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe

Processes

C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe

"C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.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/2044-59-0x0000000075D11000-0x0000000075D13000-memory.dmp

memory/268-60-0x0000000000000000-mapping.dmp

memory/908-61-0x0000000000000000-mapping.dmp

memory/1544-62-0x0000000000000000-mapping.dmp

memory/1616-63-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-09-28 20:55

Reported

2021-09-28 20:57

Platform

win10v20210408

Max time kernel

101s

Max time network

104s

Command Line

"C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe"

Signatures

Deletes shadow copies

ransomware

Modifies extensions of user files

ransomware
Description Indicator Process Target
File opened for modification C:\Users\Admin\Pictures\GetWatch.tiff C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\GetWatch.tiff.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File renamed C:\Users\Admin\Pictures\FormatDeny.png => C:\Users\Admin\Pictures\FormatDeny.png.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File renamed C:\Users\Admin\Pictures\EnableMeasure.raw => C:\Users\Admin\Pictures\EnableMeasure.raw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\PublishDisconnect.tiff C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File renamed C:\Users\Admin\Pictures\RegisterDismount.crw => C:\Users\Admin\Pictures\RegisterDismount.crw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\RegisterDismount.crw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\WatchStep.tif.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\ExportPop.crw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\FormatDeny.png.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File renamed C:\Users\Admin\Pictures\GetWatch.tiff => C:\Users\Admin\Pictures\GetWatch.tiff.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\EnableMeasure.raw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File renamed C:\Users\Admin\Pictures\PublishDisconnect.tiff => C:\Users\Admin\Pictures\PublishDisconnect.tiff.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File renamed C:\Users\Admin\Pictures\ProtectMount.crw => C:\Users\Admin\Pictures\ProtectMount.crw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\ProtectMount.crw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened for modification C:\Users\Admin\Pictures\PublishDisconnect.tiff.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File renamed C:\Users\Admin\Pictures\WatchStep.tif => C:\Users\Admin\Pictures\WatchStep.tif.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File renamed C:\Users\Admin\Pictures\ExportPop.crw => C:\Users\Admin\Pictures\ExportPop.crw.delta C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.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\093f098e70cc57a17d02323cbe6cd484.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.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\093f098e70cc57a17d02323cbe6cd484.exe

"C:\Users\Admin\AppData\Local\Temp\093f098e70cc57a17d02323cbe6cd484.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

Files

memory/1012-114-0x0000000000000000-mapping.dmp

memory/1104-115-0x0000000000000000-mapping.dmp

memory/4012-116-0x0000000000000000-mapping.dmp

memory/3960-117-0x0000000000000000-mapping.dmp