Malware Analysis Report

2024-10-23 18:43

Sample ID 240609-hblzgafg37
Target 618e80ad34695991b4507e9017db6a06655e77d617e4808f558295243f88e3c5
SHA256 618e80ad34695991b4507e9017db6a06655e77d617e4808f558295243f88e3c5
Tags
666666 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

618e80ad34695991b4507e9017db6a06655e77d617e4808f558295243f88e3c5

Threat Level: Known bad

The file 618e80ad34695991b4507e9017db6a06655e77d617e4808f558295243f88e3c5 was found to be: Known bad.

Malicious Activity Summary

666666 cobaltstrike

Cobaltstrike family

Cobalt Strike reflective loader

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-09 06:33

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

2024-06-09 06:33

Reported

2024-06-09 06:36

Platform

win7-20240419-en

Max time kernel

121s

Max time network

126s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\618e80ad34695991b4507e9017db6a06655e77d617e4808f558295243f88e3c5.dll,#1

Signatures

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\618e80ad34695991b4507e9017db6a06655e77d617e4808f558295243f88e3c5.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\618e80ad34695991b4507e9017db6a06655e77d617e4808f558295243f88e3c5.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2056 -s 228

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-09 06:33

Reported

2024-06-09 06:36

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

157s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\618e80ad34695991b4507e9017db6a06655e77d617e4808f558295243f88e3c5.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 3544 wrote to memory of 960 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3544 wrote to memory of 960 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3544 wrote to memory of 960 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\618e80ad34695991b4507e9017db6a06655e77d617e4808f558295243f88e3c5.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\618e80ad34695991b4507e9017db6a06655e77d617e4808f558295243f88e3c5.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 960 -ip 960

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 960 -s 640

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 171.117.168.52.in-addr.arpa udp

Files

N/A