Malware Analysis Report

2025-04-13 23:45

Sample ID 250103-p34rxsvkhs
Target 632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902N.exe
SHA256 632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902
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

632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902

Threat Level: Known bad

The file 632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902N.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 12:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 12:52

Reported

2025-01-03 12:54

Platform

win7-20240903-en

Max time kernel

21s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902N.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\632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902N.exe

"C:\Users\Admin\AppData\Local\Temp\632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902N.exe"

Network

N/A

Files

memory/3020-0-0x0000000001000000-0x00000000011C8000-memory.dmp

memory/3020-1-0x0000000001003000-0x0000000001005000-memory.dmp

memory/3020-2-0x0000000001000000-0x00000000011C8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 12:52

Reported

2025-01-03 12:54

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902N.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\632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902N.exe

"C:\Users\Admin\AppData\Local\Temp\632452a77b367570f2b00257ec079dc90c0e53927b9f93b673229da46e85b902N.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 166.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 60.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/4324-0-0x0000000001000000-0x00000000011C8000-memory.dmp

memory/4324-1-0x0000000001003000-0x0000000001005000-memory.dmp

memory/4324-2-0x0000000001000000-0x00000000011C8000-memory.dmp