Malware Analysis Report

2024-10-19 10:31

Sample ID 220714-cbst5agehn
Target 48c7a0da6261e557e6cd12e81ba8b577492d477d8d21c0bbd8420dc9cb613867
SHA256 48c7a0da6261e557e6cd12e81ba8b577492d477d8d21c0bbd8420dc9cb613867
Tags
locky 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

48c7a0da6261e557e6cd12e81ba8b577492d477d8d21c0bbd8420dc9cb613867

Threat Level: Known bad

The file 48c7a0da6261e557e6cd12e81ba8b577492d477d8d21c0bbd8420dc9cb613867 was found to be: Known bad.

Malicious Activity Summary

locky ransomware

Locky

Deletes shadow copies

Modifies extensions of user files

Interacts with shadow copies

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-07-14 01:54

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2022-07-14 01:54

Reported

2022-07-14 03:17

Platform

win10v2004-20220414-en

Max time kernel

93s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\48c7a0da6261e557e6cd12e81ba8b577492d477d8d21c0bbd8420dc9cb613867.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\48c7a0da6261e557e6cd12e81ba8b577492d477d8d21c0bbd8420dc9cb613867.exe

"C:\Users\Admin\AppData\Local\Temp\48c7a0da6261e557e6cd12e81ba8b577492d477d8d21c0bbd8420dc9cb613867.exe"

Network

Country Destination Domain Proto
GB 51.104.15.253:443 tcp
NL 104.110.191.140:80 tcp
NL 104.110.191.133:80 tcp
NL 104.110.191.140:80 tcp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-07-14 01:54

Reported

2022-07-14 03:17

Platform

win7-20220414-en

Max time kernel

152s

Max time network

45s

Command Line

"C:\Users\Admin\AppData\Local\Temp\48c7a0da6261e557e6cd12e81ba8b577492d477d8d21c0bbd8420dc9cb613867.exe"

Signatures

Locky

ransomware locky

Deletes shadow copies

ransomware

Modifies extensions of user files

ransomware
Description Indicator Process Target
File opened for modification \??\c:\Users\Admin\Pictures\ResolveApprove.tiff C:\Users\Admin\AppData\Local\Temp\48c7a0da6261e557e6cd12e81ba8b577492d477d8d21c0bbd8420dc9cb613867.exe N/A

Interacts with shadow copies

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\vssadmin.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 864 wrote to memory of 1656 N/A C:\Windows\system32\taskeng.exe C:\Windows\system32\vssadmin.exe
PID 864 wrote to memory of 1656 N/A C:\Windows\system32\taskeng.exe C:\Windows\system32\vssadmin.exe
PID 864 wrote to memory of 1656 N/A C:\Windows\system32\taskeng.exe C:\Windows\system32\vssadmin.exe

Processes

C:\Users\Admin\AppData\Local\Temp\48c7a0da6261e557e6cd12e81ba8b577492d477d8d21c0bbd8420dc9cb613867.exe

"C:\Users\Admin\AppData\Local\Temp\48c7a0da6261e557e6cd12e81ba8b577492d477d8d21c0bbd8420dc9cb613867.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\system32\taskeng.exe

taskeng.exe {7CC012D3-9E83-4050-821B-1D8572778302} S-1-5-18:NT AUTHORITY\System:Service:

C:\Windows\system32\vssadmin.exe

C:\Windows\system32\vssadmin.exe Delete Shadows /Quiet /All

Network

N/A

Files

memory/1556-54-0x0000000075541000-0x0000000075543000-memory.dmp

memory/1556-55-0x0000000000AB0000-0x0000000000B71000-memory.dmp

memory/1556-58-0x0000000000870000-0x00000000008F9000-memory.dmp

memory/1656-59-0x0000000000000000-mapping.dmp