Malware Analysis Report

2024-10-16 03:23

Sample ID 210511-s2jr426evn
Target 1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.zip
SHA256 5ea6a1afc900ff3765b3838827e024e324e5180a7674fd1bf59c02425db1a745
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

5ea6a1afc900ff3765b3838827e024e324e5180a7674fd1bf59c02425db1a745

Threat Level: Known bad

The file 1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.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 use of WriteProcessMemory

Interacts with shadow copies

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-05-11 01:17

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-05-11 01:17

Reported

2021-05-11 01:20

Platform

win7v20210410

Max time kernel

6s

Max time network

13s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.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\SelectCheckpoint.crw => C:\Users\Admin\Pictures\SelectCheckpoint.crw.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened for modification C:\Users\Admin\Pictures\SelectCheckpoint.crw.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.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\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.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 1200 wrote to memory of 1188 N/A C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe C:\Windows\System32\cmd.exe
PID 1200 wrote to memory of 1188 N/A C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe C:\Windows\System32\cmd.exe
PID 1200 wrote to memory of 1188 N/A C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe C:\Windows\System32\cmd.exe
PID 1200 wrote to memory of 1188 N/A C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe C:\Windows\System32\cmd.exe
PID 1188 wrote to memory of 1060 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1188 wrote to memory of 1060 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1188 wrote to memory of 1060 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1200 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe C:\Windows\System32\cmd.exe
PID 1200 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe C:\Windows\System32\cmd.exe
PID 1200 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe C:\Windows\System32\cmd.exe
PID 1200 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe C:\Windows\System32\cmd.exe
PID 1644 wrote to memory of 1284 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1644 wrote to memory of 1284 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1644 wrote to memory of 1284 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe

"C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.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/1200-60-0x00000000768B1000-0x00000000768B3000-memory.dmp

memory/1188-61-0x0000000000000000-mapping.dmp

memory/1060-62-0x0000000000000000-mapping.dmp

memory/1644-63-0x0000000000000000-mapping.dmp

memory/1284-64-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-05-11 01:17

Reported

2021-05-11 01:20

Platform

win10v20210410

Max time kernel

15s

Max time network

113s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.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\TraceExport.tif => C:\Users\Admin\Pictures\TraceExport.tif.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File renamed C:\Users\Admin\Pictures\UpdateComplete.png => C:\Users\Admin\Pictures\UpdateComplete.png.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened for modification C:\Users\Admin\Pictures\UpdateComplete.png.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File renamed C:\Users\Admin\Pictures\WaitBackup.tif => C:\Users\Admin\Pictures\WaitBackup.tif.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened for modification C:\Users\Admin\Pictures\WaitBackup.tif.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File renamed C:\Users\Admin\Pictures\StartUninstall.tif => C:\Users\Admin\Pictures\StartUninstall.tif.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File renamed C:\Users\Admin\Pictures\ResolveHide.tiff => C:\Users\Admin\Pictures\ResolveHide.tiff.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened for modification C:\Users\Admin\Pictures\ResolveHide.tiff.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened for modification C:\Users\Admin\Pictures\StartUninstall.tif.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened for modification C:\Users\Admin\Pictures\TraceExport.tif.babyk C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened for modification C:\Users\Admin\Pictures\ResolveHide.tiff C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.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 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\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.exe

"C:\Users\Admin\AppData\Local\Temp\1f2edda243404918b78aa6123aa1fc5b18dd9506e4042c7a1547b565334527e1.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/1032-114-0x0000000000000000-mapping.dmp

memory/2612-115-0x0000000000000000-mapping.dmp

memory/4004-116-0x0000000000000000-mapping.dmp

memory/692-117-0x0000000000000000-mapping.dmp