Malware Analysis Report

2024-10-19 08:16

Sample ID 240831-g1hsnszcpk
Target cb6228336699f30911dd1c20c45f03af.zip
SHA256 1f4c2264d67e04be60e79c90f21052ceb1050986332de9979a165a19babfb069
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

1f4c2264d67e04be60e79c90f21052ceb1050986332de9979a165a19babfb069

Threat Level: Known bad

The file cb6228336699f30911dd1c20c45f03af.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 06:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 06:16

Reported

2024-08-31 06:18

Platform

win7-20240708-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9ee4a71c8b68508a9267c165bff3f4b65d2906674d28cb11792c7d621d52f85d.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\9ee4a71c8b68508a9267c165bff3f4b65d2906674d28cb11792c7d621d52f85d.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9ee4a71c8b68508a9267c165bff3f4b65d2906674d28cb11792c7d621d52f85d.exe

"C:\Users\Admin\AppData\Local\Temp\9ee4a71c8b68508a9267c165bff3f4b65d2906674d28cb11792c7d621d52f85d.exe"

Network

N/A

Files

memory/1904-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/1904-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/1904-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/1904-3-0x0000000010000000-0x0000000010108000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 06:16

Reported

2024-08-31 06:18

Platform

win10v2004-20240802-en

Max time kernel

141s

Max time network

112s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9ee4a71c8b68508a9267c165bff3f4b65d2906674d28cb11792c7d621d52f85d.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\9ee4a71c8b68508a9267c165bff3f4b65d2906674d28cb11792c7d621d52f85d.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9ee4a71c8b68508a9267c165bff3f4b65d2906674d28cb11792c7d621d52f85d.exe

"C:\Users\Admin\AppData\Local\Temp\9ee4a71c8b68508a9267c165bff3f4b65d2906674d28cb11792c7d621d52f85d.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.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 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.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/4028-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/4028-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/4028-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/4028-3-0x0000000010000000-0x0000000010108000-memory.dmp