Malware Analysis Report

2024-10-16 03:24

Sample ID 210701-ss31zxgygj
Target e_win.bin
SHA256 ea95f131bd9b49104d9e7ae83335254549ded9d71d557c6e4746740aecca2c85
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

ea95f131bd9b49104d9e7ae83335254549ded9d71d557c6e4746740aecca2c85

Threat Level: Known bad

The file e_win.bin 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 use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-07-01 18:09

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-07-01 18:09

Reported

2021-07-01 18:13

Platform

win7v20210410

Max time kernel

123s

Max time network

170s

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\MergeShow.tif.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\SplitInstall.crw => C:\Users\Admin\Pictures\SplitInstall.crw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\SplitInstall.crw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\ConvertFromExport.raw => C:\Users\Admin\Pictures\ConvertFromExport.raw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\ConvertFromExport.raw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\FormatHide.raw => C:\Users\Admin\Pictures\FormatHide.raw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\FormatHide.raw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\MergeShow.tif => C:\Users\Admin\Pictures\MergeShow.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) \??\R: 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) \??\K: 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) \??\Q: 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) \??\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) \??\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) \??\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) \??\N: 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) \??\W: 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) \??\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) \??\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) \??\X: 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 2016 wrote to memory of 1648 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 2016 wrote to memory of 1648 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 2016 wrote to memory of 1648 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 2016 wrote to memory of 1648 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 1648 wrote to memory of 1772 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1648 wrote to memory of 1772 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1648 wrote to memory of 1772 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 2016 wrote to memory of 1104 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 2016 wrote to memory of 1104 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 2016 wrote to memory of 1104 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 2016 wrote to memory of 1104 N/A C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe C:\Windows\System32\cmd.exe
PID 1104 wrote to memory of 996 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1104 wrote to memory of 996 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1104 wrote to memory of 996 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/2016-59-0x0000000076A81000-0x0000000076A83000-memory.dmp

memory/1648-60-0x0000000000000000-mapping.dmp

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

memory/1104-62-0x0000000000000000-mapping.dmp

memory/996-63-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-07-01 18:09

Reported

2021-07-01 18:12

Platform

win10v20210408

Max time kernel

17s

Max time network

115s

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\OpenProtect.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\OpenResume.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\EditSet.tiff => C:\Users\Admin\Pictures\EditSet.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\EditSet.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\WatchUninstall.tiff C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\WatchUninstall.tiff => C:\Users\Admin\Pictures\WatchUninstall.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\AssertStop.raw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\EnterComplete.tiff C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\GetSubmit.crw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\WatchUninstall.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\DisableEnable.tiff C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\EditSet.tiff C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\OpenProtect.tiff => C:\Users\Admin\Pictures\OpenProtect.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\AssertStop.raw => C:\Users\Admin\Pictures\AssertStop.raw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\EnterComplete.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\EnterComplete.tiff => C:\Users\Admin\Pictures\EnterComplete.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\InstallCompress.png => C:\Users\Admin\Pictures\InstallCompress.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\InstallCompress.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\OpenResume.png => C:\Users\Admin\Pictures\OpenResume.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\UseDebug.crw => C:\Users\Admin\Pictures\UseDebug.crw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\OpenProtect.tiff C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\RegisterSplit.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\UseDebug.crw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\GetSubmit.crw => C:\Users\Admin\Pictures\GetSubmit.crw.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\RegisterSplit.png => C:\Users\Admin\Pictures\RegisterSplit.png.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File renamed C:\Users\Admin\Pictures\DisableEnable.tiff => C:\Users\Admin\Pictures\DisableEnable.tiff.babyk C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\DisableEnable.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) \??\R: 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) \??\Z: 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) \??\X: 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) \??\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) \??\S: 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) \??\E: 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) \??\F: 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) \??\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
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) \??\G: 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\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
N/A 142.251.36.35:443 tcp
N/A 216.58.211.110:443 tcp
N/A 216.58.208.109:443 tcp
N/A 142.250.179.161:443 tcp
N/A 172.217.17.74:443 tcp
N/A 8.8.8.8:443 tcp
N/A 8.8.8.8:443 tcp
N/A 142.251.36.3:443 tcp
N/A 31.13.83.36:443 tcp
N/A 31.13.83.36:443 tcp
N/A 65.9.77.70:443 tcp
N/A 216.58.214.10:443 tcp
N/A 8.8.8.8:443 tcp
N/A 142.251.36.35:443 tcp
N/A 142.250.179.131:443 tcp
N/A 8.8.8.8:443 tcp

Files

memory/636-114-0x0000000000000000-mapping.dmp

memory/3752-115-0x0000000000000000-mapping.dmp

memory/1980-116-0x0000000000000000-mapping.dmp

memory/3308-117-0x0000000000000000-mapping.dmp