Malware Analysis Report

2024-10-23 20:59

Sample ID 240901-x4cc3azhka
Target 5d3aa96ac3f903590db367dd7cfb0edf.zip
SHA256 f6a159053b9bdeecf46252ee42de9fa23d505cc02a779efc8ed17352e7463692
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

f6a159053b9bdeecf46252ee42de9fa23d505cc02a779efc8ed17352e7463692

Threat Level: Known bad

The file 5d3aa96ac3f903590db367dd7cfb0edf.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

2024-09-01 19:24

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-01 19:24

Reported

2024-09-01 19:26

Platform

win7-20240729-en

Max time kernel

118s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\540421cd7a5ee36ae48495465a8e4b3a59f6b99b2bdf79a62affd4b09755bdfe.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\540421cd7a5ee36ae48495465a8e4b3a59f6b99b2bdf79a62affd4b09755bdfe.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\540421cd7a5ee36ae48495465a8e4b3a59f6b99b2bdf79a62affd4b09755bdfe.exe

"C:\Users\Admin\AppData\Local\Temp\540421cd7a5ee36ae48495465a8e4b3a59f6b99b2bdf79a62affd4b09755bdfe.exe"

Network

N/A

Files

memory/824-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/824-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/824-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/824-3-0x0000000010000000-0x0000000010108000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-01 19:24

Reported

2024-09-01 19:26

Platform

win10v2004-20240802-en

Max time kernel

92s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\540421cd7a5ee36ae48495465a8e4b3a59f6b99b2bdf79a62affd4b09755bdfe.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\540421cd7a5ee36ae48495465a8e4b3a59f6b99b2bdf79a62affd4b09755bdfe.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\540421cd7a5ee36ae48495465a8e4b3a59f6b99b2bdf79a62affd4b09755bdfe.exe

"C:\Users\Admin\AppData\Local\Temp\540421cd7a5ee36ae48495465a8e4b3a59f6b99b2bdf79a62affd4b09755bdfe.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 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 44.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 71.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/624-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/624-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/624-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/624-3-0x0000000010000000-0x0000000010108000-memory.dmp