Malware Analysis Report

2025-03-15 08:12

Sample ID 240530-elt62seg45
Target df5e50ee2ba81490fa8cef6c388416d695d14574b348c44557cbb60e0b0d3410
SHA256 df5e50ee2ba81490fa8cef6c388416d695d14574b348c44557cbb60e0b0d3410
Tags
0 cobaltstrike
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

df5e50ee2ba81490fa8cef6c388416d695d14574b348c44557cbb60e0b0d3410

Threat Level: Known bad

The file df5e50ee2ba81490fa8cef6c388416d695d14574b348c44557cbb60e0b0d3410 was found to be: Known bad.

Malicious Activity Summary

0 cobaltstrike

Cobalt Strike reflective loader

Cobaltstrike family

Detects Reflective DLL injection artifacts

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-30 04:02

Signatures

Cobalt Strike reflective loader

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

Cobaltstrike family

cobaltstrike

Detects Reflective DLL injection artifacts

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

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 04:02

Reported

2024-05-30 04:04

Platform

win10v2004-20240426-en

Max time kernel

95s

Max time network

124s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\df5e50ee2ba81490fa8cef6c388416d695d14574b348c44557cbb60e0b0d3410.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 3748 wrote to memory of 1860 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3748 wrote to memory of 1860 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3748 wrote to memory of 1860 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\df5e50ee2ba81490fa8cef6c388416d695d14574b348c44557cbb60e0b0d3410.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\df5e50ee2ba81490fa8cef6c388416d695d14574b348c44557cbb60e0b0d3410.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1860 -ip 1860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1860 -s 684

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-30 04:02

Reported

2024-05-30 04:04

Platform

win7-20240221-en

Max time kernel

117s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\df5e50ee2ba81490fa8cef6c388416d695d14574b348c44557cbb60e0b0d3410.dll,#1

Signatures

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\df5e50ee2ba81490fa8cef6c388416d695d14574b348c44557cbb60e0b0d3410.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\df5e50ee2ba81490fa8cef6c388416d695d14574b348c44557cbb60e0b0d3410.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2508 -s 240

Network

N/A

Files

N/A