Malware Analysis Report

2024-10-23 20:59

Sample ID 240901-1979gatcjj
Target c1b2defc1298a0e03d85da41a023a1a0N.exe
SHA256 a97fbb267813e185350c6bf28fac2388b7ec1238cec202f9581de337bbac0e2f
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

a97fbb267813e185350c6bf28fac2388b7ec1238cec202f9581de337bbac0e2f

Threat Level: Known bad

The file c1b2defc1298a0e03d85da41a023a1a0N.exe 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 22:22

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-01 22:22

Reported

2024-09-01 22:24

Platform

win7-20240729-en

Max time kernel

16s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c1b2defc1298a0e03d85da41a023a1a0N.exe"

Signatures

Expiro, m0yv

backdoor expiro

Expiro payload

backdoor
Description Indicator Process Target
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\c1b2defc1298a0e03d85da41a023a1a0N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c1b2defc1298a0e03d85da41a023a1a0N.exe

"C:\Users\Admin\AppData\Local\Temp\c1b2defc1298a0e03d85da41a023a1a0N.exe"

Network

N/A

Files

memory/288-0-0x0000000001000000-0x00000000011C8000-memory.dmp

memory/288-1-0x0000000001003000-0x0000000001005000-memory.dmp

memory/288-2-0x0000000001000000-0x00000000011C8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-01 22:22

Reported

2024-09-01 22:24

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

102s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c1b2defc1298a0e03d85da41a023a1a0N.exe"

Signatures

Expiro, m0yv

backdoor expiro

Expiro payload

backdoor
Description Indicator Process Target
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\c1b2defc1298a0e03d85da41a023a1a0N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c1b2defc1298a0e03d85da41a023a1a0N.exe

"C:\Users\Admin\AppData\Local\Temp\c1b2defc1298a0e03d85da41a023a1a0N.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 71.190.18.2.in-addr.arpa udp
US 52.111.227.11:443 tcp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/1836-0-0x0000000001000000-0x00000000011C8000-memory.dmp

memory/1836-1-0x0000000001003000-0x0000000001005000-memory.dmp

memory/1836-2-0x0000000001000000-0x00000000011C8000-memory.dmp