Malware Analysis Report

2025-01-22 19:29

Sample ID 240807-ds6mzsshlh
Target 92a64953c19f23103b242980cc495daffdaa24aa488976475bcd8a19c611769b.zip
SHA256 a95c217304ce9222be30bfb39e0d7d354cc6f1f72baafb230cd7093cf763bf6c
Tags
0 cobaltstrike discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

a95c217304ce9222be30bfb39e0d7d354cc6f1f72baafb230cd7093cf763bf6c

Threat Level: Known bad

The file 92a64953c19f23103b242980cc495daffdaa24aa488976475bcd8a19c611769b.zip was found to be: Known bad.

Malicious Activity Summary

0 cobaltstrike discovery

Cobalt Strike reflective loader

Cobaltstrike family

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-07 03:17

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

2024-08-07 03:17

Reported

2024-08-07 03:19

Platform

win7-20240704-en

Max time kernel

120s

Max time network

125s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\92a64953c19f23103b242980cc495daffdaa24aa488976475bcd8a19c611769b.dll,#1

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2380 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2380 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2380 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2380 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2380 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2380 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2380 wrote to memory of 2504 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\92a64953c19f23103b242980cc495daffdaa24aa488976475bcd8a19c611769b.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\92a64953c19f23103b242980cc495daffdaa24aa488976475bcd8a19c611769b.dll,#1

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-07 03:17

Reported

2024-08-07 03:19

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\92a64953c19f23103b242980cc495daffdaa24aa488976475bcd8a19c611769b.dll,#1

Signatures

Program crash

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4964 wrote to memory of 4352 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4964 wrote to memory of 4352 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4964 wrote to memory of 4352 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\92a64953c19f23103b242980cc495daffdaa24aa488976475bcd8a19c611769b.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\92a64953c19f23103b242980cc495daffdaa24aa488976475bcd8a19c611769b.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4352 -ip 4352

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4352 -s 560

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 71.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 52.111.229.43:443 tcp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

N/A