Malware Analysis Report

2024-10-19 08:16

Sample ID 240831-djyk1ssemn
Target 8311f3898e4b454d59489773c4e7592b.zip
SHA256 d0c0f7321b6fec21e09dea2698a9d0ebc72d96d513358f44ce396153353bb41c
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

d0c0f7321b6fec21e09dea2698a9d0ebc72d96d513358f44ce396153353bb41c

Threat Level: Known bad

The file 8311f3898e4b454d59489773c4e7592b.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

2024-08-31 03:02

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 03:02

Reported

2024-08-31 03:05

Platform

win7-20240705-en

Max time kernel

122s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c3125bbbc460d3df6e6125e3acb29e34c0ae2447cf79b2a671b7da9ca710d18a.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\c3125bbbc460d3df6e6125e3acb29e34c0ae2447cf79b2a671b7da9ca710d18a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c3125bbbc460d3df6e6125e3acb29e34c0ae2447cf79b2a671b7da9ca710d18a.exe

"C:\Users\Admin\AppData\Local\Temp\c3125bbbc460d3df6e6125e3acb29e34c0ae2447cf79b2a671b7da9ca710d18a.exe"

Network

N/A

Files

memory/3032-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/3032-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/3032-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/3032-3-0x0000000010000000-0x0000000010108000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 03:02

Reported

2024-08-31 03:05

Platform

win10v2004-20240802-en

Max time kernel

134s

Max time network

102s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c3125bbbc460d3df6e6125e3acb29e34c0ae2447cf79b2a671b7da9ca710d18a.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\c3125bbbc460d3df6e6125e3acb29e34c0ae2447cf79b2a671b7da9ca710d18a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c3125bbbc460d3df6e6125e3acb29e34c0ae2447cf79b2a671b7da9ca710d18a.exe

"C:\Users\Admin\AppData\Local\Temp\c3125bbbc460d3df6e6125e3acb29e34c0ae2447cf79b2a671b7da9ca710d18a.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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/4124-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/4124-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/4124-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/4124-3-0x0000000010000000-0x0000000010108000-memory.dmp