Malware Analysis Report

2024-10-19 08:15

Sample ID 240831-c14mxs1fkr
Target 76a693274bee28762547daae64483104.zip
SHA256 872515d22463579a76689be0f034cc12a3627a83177c4d5a6f9ef622647983ba
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

872515d22463579a76689be0f034cc12a3627a83177c4d5a6f9ef622647983ba

Threat Level: Known bad

The file 76a693274bee28762547daae64483104.zip was found to be: Known bad.

Malicious Activity Summary

expiro backdoor discovery

Expiro, m0yv

Expiro payload

Unsigned PE

System Location Discovery: System Language Discovery

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-31 02:33

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 02:33

Reported

2024-08-31 02:36

Platform

win7-20240705-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a6a56dd2a6064870c1df65078f56173b9dd620f770dadc909fa8da4062e6160a.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\a6a56dd2a6064870c1df65078f56173b9dd620f770dadc909fa8da4062e6160a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a6a56dd2a6064870c1df65078f56173b9dd620f770dadc909fa8da4062e6160a.exe

"C:\Users\Admin\AppData\Local\Temp\a6a56dd2a6064870c1df65078f56173b9dd620f770dadc909fa8da4062e6160a.exe"

Network

N/A

Files

memory/3048-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/3048-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/3048-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/3048-3-0x0000000010000000-0x0000000010108000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 02:33

Reported

2024-08-31 02:36

Platform

win10v2004-20240802-en

Max time kernel

137s

Max time network

109s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a6a56dd2a6064870c1df65078f56173b9dd620f770dadc909fa8da4062e6160a.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\a6a56dd2a6064870c1df65078f56173b9dd620f770dadc909fa8da4062e6160a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a6a56dd2a6064870c1df65078f56173b9dd620f770dadc909fa8da4062e6160a.exe

"C:\Users\Admin\AppData\Local\Temp\a6a56dd2a6064870c1df65078f56173b9dd620f770dadc909fa8da4062e6160a.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.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/1588-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/1588-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/1588-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/1588-3-0x0000000010000000-0x0000000010108000-memory.dmp