Malware Analysis Report

2024-10-16 03:24

Sample ID 210819-t93ba6qst2
Target e_win.bin.zip
SHA256 7f70c9a586b7ee09f1bff4f642381d5ed72af47381da2f535363776fd30d024b
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

7f70c9a586b7ee09f1bff4f642381d5ed72af47381da2f535363776fd30d024b

Threat Level: Known bad

The file e_win.bin.zip 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

2021-08-19 14:55

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2021-08-19 14:55

Reported

2021-08-19 14:58

Platform

win10v20210410

Max time kernel

16s

Max time network

113s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e_win.bin.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\OutWatch.tiff => C:\Users\Admin\Pictures\OutWatch.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\OutWatch.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\WriteSplit.png => C:\Users\Admin\Pictures\WriteSplit.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\BlockConnect.tiff C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\ConfirmEnter.crw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\ConfirmEnter.crw => C:\Users\Admin\Pictures\ConfirmEnter.crw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\EditCopy.raw => C:\Users\Admin\Pictures\EditCopy.raw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\EditCopy.raw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\OutWatch.tiff C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\WriteSplit.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\BlockConnect.tiff => C:\Users\Admin\Pictures\BlockConnect.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\BlockConnect.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A

Enumerates connected drives

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

"C:\Users\Admin\AppData\Local\Temp\e_win.bin.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\cmd.exe

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

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

Network

N/A

Files

memory/1500-114-0x0000000000000000-mapping.dmp

memory/2848-115-0x0000000000000000-mapping.dmp

memory/3260-116-0x0000000000000000-mapping.dmp

memory/3196-117-0x0000000000000000-mapping.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2021-08-19 14:55

Reported

2021-08-19 14:58

Platform

win7v20210408

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e_win.bin.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\LimitUnregister.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\TraceMove.tiff C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\PingGet.tif.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\StartSend.png => C:\Users\Admin\Pictures\StartSend.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\StartSend.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\TraceMove.tiff => C:\Users\Admin\Pictures\TraceMove.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\TraceMove.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\LimitUnregister.png => C:\Users\Admin\Pictures\LimitUnregister.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\PingGet.tif => C:\Users\Admin\Pictures\PingGet.tif.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\e_win.bin.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\e_win.bin.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 1348 wrote to memory of 1280 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 1348 wrote to memory of 1280 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 1348 wrote to memory of 1280 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 1348 wrote to memory of 1280 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 1280 wrote to memory of 2008 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1280 wrote to memory of 2008 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1280 wrote to memory of 2008 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1348 wrote to memory of 1672 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 1348 wrote to memory of 1672 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 1348 wrote to memory of 1672 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 1348 wrote to memory of 1672 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 1672 wrote to memory of 1328 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1672 wrote to memory of 1328 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1672 wrote to memory of 1328 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe

Processes

C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe

"C:\Users\Admin\AppData\Local\Temp\e_win.bin.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/1348-60-0x00000000762C1000-0x00000000762C3000-memory.dmp

memory/1280-61-0x0000000000000000-mapping.dmp

memory/2008-62-0x0000000000000000-mapping.dmp

memory/1672-63-0x0000000000000000-mapping.dmp

memory/1328-64-0x0000000000000000-mapping.dmp