Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-svq3mszrhy
Target a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe
SHA256 a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431
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

a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431

Threat Level: Known bad

The file a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe was found to be: Known bad.

Malicious Activity Summary

expiro backdoor discovery

Expiro family

Expiro, m0yv

Expiro payload

Unsigned PE

System Location Discovery: System Language Discovery

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-03 15:27

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 15:27

Reported

2025-01-03 15:29

Platform

win7-20240903-en

Max time kernel

16s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe"

Signatures

Expiro family

expiro

Expiro, m0yv

backdoor expiro

Expiro payload

backdoor
Description Indicator Process Target
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\a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe

"C:\Users\Admin\AppData\Local\Temp\a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe"

Network

N/A

Files

memory/1980-0-0x0000000001000000-0x00000000011B9000-memory.dmp

memory/1980-1-0x0000000001006000-0x0000000001008000-memory.dmp

memory/1980-2-0x0000000001000000-0x00000000011B9000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 15:27

Reported

2025-01-03 15:29

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

97s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe"

Signatures

Expiro family

expiro

Expiro, m0yv

backdoor expiro

Expiro payload

backdoor
Description Indicator Process Target
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\a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe

"C:\Users\Admin\AppData\Local\Temp\a944e9fd722bd94318663eaae5cd6e168ebef3f3a9e00dbcc00eb997162bc431N.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 60.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/640-0-0x0000000001000000-0x00000000011B9000-memory.dmp

memory/640-1-0x0000000001006000-0x0000000001008000-memory.dmp

memory/640-2-0x0000000001000000-0x00000000011B9000-memory.dmp