Malware Analysis Report

2024-10-19 08:16

Sample ID 240831-hfwdpszhqn
Target d48829e0304a6d62d8dcd1be9c06d8f6.zip
SHA256 cd49a47d1d8acc21daef377ce4e3b387618cbfe49cd9a7100954f559c326225a
Tags
expiro backdoor 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

cd49a47d1d8acc21daef377ce4e3b387618cbfe49cd9a7100954f559c326225a

Threat Level: Known bad

The file d48829e0304a6d62d8dcd1be9c06d8f6.zip was found to be: Known bad.

Malicious Activity Summary

expiro backdoor discovery

Expiro, m0yv

Expiro payload

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-31 06:41

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 06:41

Reported

2024-08-31 06:43

Platform

win7-20240705-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\371455235fb78b0f5bf933a52fc68155edd3df7d356ae1da4d74f72384b25c6f.exe"

Signatures

Expiro, m0yv

backdoor expiro

Expiro payload

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\371455235fb78b0f5bf933a52fc68155edd3df7d356ae1da4d74f72384b25c6f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\371455235fb78b0f5bf933a52fc68155edd3df7d356ae1da4d74f72384b25c6f.exe

"C:\Users\Admin\AppData\Local\Temp\371455235fb78b0f5bf933a52fc68155edd3df7d356ae1da4d74f72384b25c6f.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3032 -s 68

Network

N/A

Files

memory/3032-0-0x0000000000B9C000-0x0000000000C2F000-memory.dmp

memory/3032-1-0x0000000000B30000-0x0000000000C2F000-memory.dmp

memory/3032-2-0x0000000000B9C000-0x0000000000C2F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 06:41

Reported

2024-08-31 06:43

Platform

win10v2004-20240802-en

Max time kernel

137s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\371455235fb78b0f5bf933a52fc68155edd3df7d356ae1da4d74f72384b25c6f.exe"

Signatures

Expiro, m0yv

backdoor expiro

Expiro payload

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\371455235fb78b0f5bf933a52fc68155edd3df7d356ae1da4d74f72384b25c6f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\371455235fb78b0f5bf933a52fc68155edd3df7d356ae1da4d74f72384b25c6f.exe

"C:\Users\Admin\AppData\Local\Temp\371455235fb78b0f5bf933a52fc68155edd3df7d356ae1da4d74f72384b25c6f.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 864 -ip 864

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 864 -s 252

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 58.55.71.13.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 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.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 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/864-0-0x000000000104C000-0x00000000010DF000-memory.dmp

memory/864-1-0x0000000000FE0000-0x00000000010DF000-memory.dmp

memory/864-3-0x0000000000FE0000-0x00000000010DF000-memory.dmp

memory/864-2-0x000000000104C000-0x00000000010DF000-memory.dmp