Malware Analysis Report

2024-10-16 03:07

Sample ID 240608-1tk41agh9x
Target c5f8a882bca35458ee14ba12e569b1215b19b50b9a7cdfc080d2904be65be144.zip
SHA256 45e159e68fcbf377ebe74da7c1a9c054e2f65d94ee7c9b7370a0a7ce0a3c8ee6
Tags
0 cobaltstrike
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

45e159e68fcbf377ebe74da7c1a9c054e2f65d94ee7c9b7370a0a7ce0a3c8ee6

Threat Level: Known bad

The file c5f8a882bca35458ee14ba12e569b1215b19b50b9a7cdfc080d2904be65be144.zip was found to be: Known bad.

Malicious Activity Summary

0 cobaltstrike

Cobalt Strike reflective loader

Cobaltstrike family

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-08 21:56

Signatures

Cobalt Strike reflective loader

Description Indicator Process Target
N/A N/A N/A N/A

Cobaltstrike family

cobaltstrike

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-08 21:56

Reported

2024-06-08 21:59

Platform

win7-20240220-en

Max time kernel

120s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5f8a882bca35458ee14ba12e569b1215b19b50b9a7cdfc080d2904be65be144.dll,#1

Signatures

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5f8a882bca35458ee14ba12e569b1215b19b50b9a7cdfc080d2904be65be144.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5f8a882bca35458ee14ba12e569b1215b19b50b9a7cdfc080d2904be65be144.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 864 -s 240

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-08 21:56

Reported

2024-06-08 21:59

Platform

win10v2004-20240508-en

Max time kernel

92s

Max time network

123s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5f8a882bca35458ee14ba12e569b1215b19b50b9a7cdfc080d2904be65be144.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4312 wrote to memory of 4288 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4312 wrote to memory of 4288 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4312 wrote to memory of 4288 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5f8a882bca35458ee14ba12e569b1215b19b50b9a7cdfc080d2904be65be144.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5f8a882bca35458ee14ba12e569b1215b19b50b9a7cdfc080d2904be65be144.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4288 -ip 4288

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4288 -s 680

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 32.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp

Files

N/A