Malware Analysis Report

2024-10-19 08:16

Sample ID 240831-na66xazhkq
Target 0bbb47cfcf2fd2a290c10158d71a4335.zip
SHA256 62541f22e2c9de7ed46b352438c4a0416fd1e68b0ff32724b9ff0664d428af35
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

62541f22e2c9de7ed46b352438c4a0416fd1e68b0ff32724b9ff0664d428af35

Threat Level: Known bad

The file 0bbb47cfcf2fd2a290c10158d71a4335.zip was found to be: Known bad.

Malicious Activity Summary

expiro backdoor discovery

Expiro, m0yv

Expiro payload

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-31 11:12

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 11:12

Reported

2024-08-31 11:15

Platform

win7-20240705-en

Max time kernel

119s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5416a414a27a40f75e64cc68fb456e7655732fe173f43685e93b9ecad1bbc7f7.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\5416a414a27a40f75e64cc68fb456e7655732fe173f43685e93b9ecad1bbc7f7.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5416a414a27a40f75e64cc68fb456e7655732fe173f43685e93b9ecad1bbc7f7.exe

"C:\Users\Admin\AppData\Local\Temp\5416a414a27a40f75e64cc68fb456e7655732fe173f43685e93b9ecad1bbc7f7.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2232 -s 156

Network

N/A

Files

memory/2232-0-0x000000000091E000-0x00000000009B1000-memory.dmp

memory/2232-1-0x00000000001D0000-0x00000000009B1000-memory.dmp

memory/2232-2-0x000000000091E000-0x00000000009B1000-memory.dmp

memory/2232-3-0x00000000001D0000-0x00000000009B1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 11:12

Reported

2024-08-31 11:15

Platform

win10v2004-20240802-en

Max time kernel

134s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5416a414a27a40f75e64cc68fb456e7655732fe173f43685e93b9ecad1bbc7f7.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\5416a414a27a40f75e64cc68fb456e7655732fe173f43685e93b9ecad1bbc7f7.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5416a414a27a40f75e64cc68fb456e7655732fe173f43685e93b9ecad1bbc7f7.exe

"C:\Users\Admin\AppData\Local\Temp\5416a414a27a40f75e64cc68fb456e7655732fe173f43685e93b9ecad1bbc7f7.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3252 -ip 3252

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3252 -s 424

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 150.171.27.10:443 g.bing.com tcp
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 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.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
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/3252-0-0x0000000000CFE000-0x0000000000D91000-memory.dmp

memory/3252-1-0x00000000005B0000-0x0000000000D91000-memory.dmp

memory/3252-2-0x0000000000CFE000-0x0000000000D91000-memory.dmp

memory/3252-3-0x00000000005B0000-0x0000000000D91000-memory.dmp