Malware Analysis Report

2025-01-22 19:28

Sample ID 240806-krk38ayeqa
Target 1084-0-0x00000000002D0000-0x0000000000322000-memory.dmp
SHA256 67311c268965b0198e4f3cc710d92648b77713a77fb13e5bdb76be43e5da7fc3
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

67311c268965b0198e4f3cc710d92648b77713a77fb13e5bdb76be43e5da7fc3

Threat Level: Known bad

The file 1084-0-0x00000000002D0000-0x0000000000322000-memory.dmp was found to be: Known bad.

Malicious Activity Summary

0 cobaltstrike

Cobaltstrike family

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-08-06 08:50

Signatures

Cobaltstrike family

cobaltstrike

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-06 08:50

Reported

2024-08-06 08:52

Platform

win10v2004-20240802-en

Max time kernel

120s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1084-0-0x00000000002D0000-0x0000000000322000-memory.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1084-0-0x00000000002D0000-0x0000000000322000-memory.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 52.111.229.48:443 tcp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-06 08:50

Reported

2024-08-06 08:52

Platform

win7-20240704-en

Max time kernel

122s

Max time network

126s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1084-0-0x00000000002D0000-0x0000000000322000-memory.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2804 wrote to memory of 2824 N/A C:\Windows\system32\rundll32.exe C:\Windows\system32\WerFault.exe
PID 2804 wrote to memory of 2824 N/A C:\Windows\system32\rundll32.exe C:\Windows\system32\WerFault.exe
PID 2804 wrote to memory of 2824 N/A C:\Windows\system32\rundll32.exe C:\Windows\system32\WerFault.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1084-0-0x00000000002D0000-0x0000000000322000-memory.dll,#1

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2804 -s 56

Network

N/A

Files

N/A