Malware Analysis Report

2024-10-19 08:16

Sample ID 240831-j3m7aaterb
Target fd803509cebeb8fde6b4e36a62b7b3400572bb74dc55521324caa849730a14bc
SHA256 fd803509cebeb8fde6b4e36a62b7b3400572bb74dc55521324caa849730a14bc
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

fd803509cebeb8fde6b4e36a62b7b3400572bb74dc55521324caa849730a14bc

Threat Level: Known bad

The file fd803509cebeb8fde6b4e36a62b7b3400572bb74dc55521324caa849730a14bc 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 08:11

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 08:11

Reported

2024-08-31 08:14

Platform

win7-20240704-en

Max time kernel

13s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ecf1c18fd8e00059f7408f943e96f73aa08839601eec0bc2588fcb3e9c29d137.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\ecf1c18fd8e00059f7408f943e96f73aa08839601eec0bc2588fcb3e9c29d137.exe

"C:\Users\Admin\AppData\Local\Temp\ecf1c18fd8e00059f7408f943e96f73aa08839601eec0bc2588fcb3e9c29d137.exe"

Network

N/A

Files

memory/1052-0-0x0000000000B6B000-0x0000000000BFE000-memory.dmp

memory/1052-2-0x0000000000B6B000-0x0000000000BFE000-memory.dmp

memory/1052-1-0x0000000000B00000-0x0000000000BFE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 08:11

Reported

2024-08-31 08:14

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ecf1c18fd8e00059f7408f943e96f73aa08839601eec0bc2588fcb3e9c29d137.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\ecf1c18fd8e00059f7408f943e96f73aa08839601eec0bc2588fcb3e9c29d137.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ecf1c18fd8e00059f7408f943e96f73aa08839601eec0bc2588fcb3e9c29d137.exe

"C:\Users\Admin\AppData\Local\Temp\ecf1c18fd8e00059f7408f943e96f73aa08839601eec0bc2588fcb3e9c29d137.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.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 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.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 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.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
US 8.8.8.8:53 73.239.69.13.in-addr.arpa udp

Files

memory/4860-0-0x0000000000C6B000-0x0000000000CFE000-memory.dmp

memory/4860-1-0x0000000000C6B000-0x0000000000CFE000-memory.dmp

memory/4860-2-0x0000000000C00000-0x0000000000CFE000-memory.dmp

memory/4860-3-0x0000000000C00000-0x0000000000CFE000-memory.dmp