Malware Analysis Report

2024-10-23 20:59

Sample ID 240901-cjwkzsycrj
Target fd629d89a49c0fa9376f08351676ace6.zip
SHA256 5b030e5ae2f231bacce67ced42ba8069c9a36d4580df4e437801ac50b23c367d
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

5b030e5ae2f231bacce67ced42ba8069c9a36d4580df4e437801ac50b23c367d

Threat Level: Known bad

The file fd629d89a49c0fa9376f08351676ace6.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

2024-09-01 02:06

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-01 02:06

Reported

2024-09-01 02:09

Platform

win7-20240705-en

Max time kernel

121s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5fe5e2861f87eb45375de51856cbce7e7b56fb28f486372ee2c91356e4338f48.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

Processes

C:\Users\Admin\AppData\Local\Temp\5fe5e2861f87eb45375de51856cbce7e7b56fb28f486372ee2c91356e4338f48.exe

"C:\Users\Admin\AppData\Local\Temp\5fe5e2861f87eb45375de51856cbce7e7b56fb28f486372ee2c91356e4338f48.exe"

Network

N/A

Files

memory/588-0-0x00000000001EB000-0x000000000027E000-memory.dmp

memory/588-2-0x0000000000180000-0x000000000027E000-memory.dmp

memory/588-1-0x00000000001EB000-0x000000000027E000-memory.dmp

memory/588-3-0x0000000000180000-0x000000000027E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-01 02:06

Reported

2024-09-01 02:09

Platform

win10v2004-20240802-en

Max time kernel

146s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5fe5e2861f87eb45375de51856cbce7e7b56fb28f486372ee2c91356e4338f48.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\5fe5e2861f87eb45375de51856cbce7e7b56fb28f486372ee2c91356e4338f48.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5fe5e2861f87eb45375de51856cbce7e7b56fb28f486372ee2c91356e4338f48.exe

"C:\Users\Admin\AppData\Local\Temp\5fe5e2861f87eb45375de51856cbce7e7b56fb28f486372ee2c91356e4338f48.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

memory/1560-0-0x00000000003BB000-0x000000000044E000-memory.dmp

memory/1560-1-0x0000000000350000-0x000000000044E000-memory.dmp

memory/1560-3-0x0000000000350000-0x000000000044E000-memory.dmp

memory/1560-2-0x00000000003BB000-0x000000000044E000-memory.dmp