Malware Analysis Report

2024-10-23 20:59

Sample ID 240831-tfw6sasenb
Target 1ddccfcf2a14b8dd1553585152ce568c.zip
SHA256 3510abbff8f9dfccd15cead77ff7ae11f9aff9fd1f1786e431d74804c21c7b0a
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

3510abbff8f9dfccd15cead77ff7ae11f9aff9fd1f1786e431d74804c21c7b0a

Threat Level: Known bad

The file 1ddccfcf2a14b8dd1553585152ce568c.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

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-31 16:00

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 16:00

Reported

2024-08-31 16:03

Platform

win7-20240705-en

Max time kernel

122s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\89f5e95f29598074516207e355d6babdc5fbf0dc60f0a826e176e71965d89849.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\89f5e95f29598074516207e355d6babdc5fbf0dc60f0a826e176e71965d89849.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\89f5e95f29598074516207e355d6babdc5fbf0dc60f0a826e176e71965d89849.exe

"C:\Users\Admin\AppData\Local\Temp\89f5e95f29598074516207e355d6babdc5fbf0dc60f0a826e176e71965d89849.exe"

Network

N/A

Files

memory/1616-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/1616-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/1616-3-0x0000000010000000-0x0000000010108000-memory.dmp

memory/1616-2-0x0000000010074000-0x0000000010108000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 16:00

Reported

2024-08-31 16:03

Platform

win10v2004-20240802-en

Max time kernel

134s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\89f5e95f29598074516207e355d6babdc5fbf0dc60f0a826e176e71965d89849.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\89f5e95f29598074516207e355d6babdc5fbf0dc60f0a826e176e71965d89849.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\89f5e95f29598074516207e355d6babdc5fbf0dc60f0a826e176e71965d89849.exe

"C:\Users\Admin\AppData\Local\Temp\89f5e95f29598074516207e355d6babdc5fbf0dc60f0a826e176e71965d89849.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 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.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
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/4112-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/4112-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/4112-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/4112-3-0x0000000010000000-0x0000000010108000-memory.dmp