Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-q6fd6sxlaz
Target a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.exe
SHA256 a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63
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

a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63

Threat Level: Known bad

The file a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.exe was found to be: Known bad.

Malicious Activity Summary

expiro backdoor discovery

Expiro family

Expiro, m0yv

Expiro payload

System Location Discovery: System Language Discovery

Unsigned PE

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-03 13:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 13:52

Reported

2025-01-03 13:54

Platform

win7-20240903-en

Max time kernel

120s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.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\a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.exe

"C:\Users\Admin\AppData\Local\Temp\a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.exe"

Network

N/A

Files

memory/2708-1-0x00000000009A0000-0x0000000000C09000-memory.dmp

memory/2708-0-0x0000000001000000-0x0000000001269000-memory.dmp

memory/2708-2-0x0000000001000000-0x0000000001269000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 13:52

Reported

2025-01-03 13:54

Platform

win10v2004-20241007-en

Max time kernel

96s

Max time network

101s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.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\a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.exe

"C:\Users\Admin\AppData\Local\Temp\a12bba8061d976ae40d1ca75f137da6457085c3cab0d07907fd99e45de0b2c63N.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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 60.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/5056-0-0x0000000001000000-0x0000000001269000-memory.dmp

memory/5056-1-0x000000000100F000-0x0000000001010000-memory.dmp

memory/5056-2-0x0000000001000000-0x0000000001269000-memory.dmp