Malware Analysis Report

2024-10-19 08:15

Sample ID 240831-km899aveqn
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 08:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 08:44

Reported

2024-08-31 08:46

Platform

win7-20240729-en

Max time kernel

16s

Max time network

20s

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 1680 -s 156

Network

N/A

Files

memory/1680-0-0x0000000001A2E000-0x0000000001AC1000-memory.dmp

memory/1680-1-0x00000000012E0000-0x0000000001AC1000-memory.dmp

memory/1680-2-0x0000000001A2E000-0x0000000001AC1000-memory.dmp

memory/1680-3-0x00000000012E0000-0x0000000001AC1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 08:44

Reported

2024-08-31 08:46

Platform

win10v2004-20240802-en

Max time kernel

139s

Max time network

112s

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 412 -p 3140 -ip 3140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3140 -s 424

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.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 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.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 10.27.171.150.in-addr.arpa udp

Files

memory/3140-0-0x00000000015BE000-0x0000000001651000-memory.dmp

memory/3140-1-0x0000000000E70000-0x0000000001651000-memory.dmp

memory/3140-2-0x00000000015BE000-0x0000000001651000-memory.dmp

memory/3140-3-0x0000000000E70000-0x0000000001651000-memory.dmp