Malware Analysis Report

2024-10-19 08:16

Sample ID 240831-drl7yssgrp
Target f0999ed2b9d0be10c6303188f265159d0569e3490f3ee619c76a59650c9bb329
SHA256 f0999ed2b9d0be10c6303188f265159d0569e3490f3ee619c76a59650c9bb329
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

f0999ed2b9d0be10c6303188f265159d0569e3490f3ee619c76a59650c9bb329

Threat Level: Known bad

The file f0999ed2b9d0be10c6303188f265159d0569e3490f3ee619c76a59650c9bb329 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

2024-08-31 03:14

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 03:14

Reported

2024-08-31 03:17

Platform

win7-20240704-en

Max time kernel

15s

Max time network

20s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e6e731aa7a555d24e130df62cd29c9227b77fc66dccea92ea468bcc5eccf2e4e.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

Processes

C:\Users\Admin\AppData\Local\Temp\e6e731aa7a555d24e130df62cd29c9227b77fc66dccea92ea468bcc5eccf2e4e.exe

"C:\Users\Admin\AppData\Local\Temp\e6e731aa7a555d24e130df62cd29c9227b77fc66dccea92ea468bcc5eccf2e4e.exe"

Network

N/A

Files

memory/2776-0-0x000000000058B000-0x000000000061E000-memory.dmp

memory/2776-2-0x000000000058B000-0x000000000061E000-memory.dmp

memory/2776-1-0x0000000000520000-0x000000000061E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 03:14

Reported

2024-08-31 03:17

Platform

win10v2004-20240802-en

Max time kernel

135s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e6e731aa7a555d24e130df62cd29c9227b77fc66dccea92ea468bcc5eccf2e4e.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\e6e731aa7a555d24e130df62cd29c9227b77fc66dccea92ea468bcc5eccf2e4e.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e6e731aa7a555d24e130df62cd29c9227b77fc66dccea92ea468bcc5eccf2e4e.exe

"C:\Users\Admin\AppData\Local\Temp\e6e731aa7a555d24e130df62cd29c9227b77fc66dccea92ea468bcc5eccf2e4e.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4128,i,16316361669272684588,6171287487746154806,262144 --variations-seed-version --mojo-platform-channel-handle=4076 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 44.56.20.217.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 150.171.28.10:443 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/1988-0-0x0000000000BAB000-0x0000000000C3E000-memory.dmp

memory/1988-1-0x0000000000BAB000-0x0000000000C3E000-memory.dmp

memory/1988-2-0x0000000000B40000-0x0000000000C3E000-memory.dmp

memory/1988-3-0x0000000000B40000-0x0000000000C3E000-memory.dmp