Malware Analysis Report

2024-10-23 20:59

Sample ID 240831-pp6dlatcne
Target f160b4aaad518b10dfc712bc54c37d11.zip
SHA256 9b1b829a3fcd74fd5665f2149cf3765edac0de6830ec482711e068c21c6af79a
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

9b1b829a3fcd74fd5665f2149cf3765edac0de6830ec482711e068c21c6af79a

Threat Level: Known bad

The file f160b4aaad518b10dfc712bc54c37d11.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 12:31

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 12:31

Reported

2024-08-31 12:33

Platform

win7-20240705-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e.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

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\a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e.exe

"C:\Users\Admin\AppData\Local\Temp\a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 64

Network

N/A

Files

memory/1460-0-0x0000000000FAB000-0x000000000103E000-memory.dmp

memory/1460-1-0x0000000000F40000-0x000000000103E000-memory.dmp

memory/1460-2-0x0000000000FAB000-0x000000000103E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 12:31

Reported

2024-08-31 12:33

Platform

win10v2004-20240802-en

Max time kernel

135s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e.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\a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e.exe

"C:\Users\Admin\AppData\Local\Temp\a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4560 -ip 4560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 260

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.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 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 52.111.227.11:443 tcp
US 8.8.8.8:53 21.236.111.52.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 43.58.199.20.in-addr.arpa udp

Files

memory/4560-0-0x0000000000F6B000-0x0000000000FFE000-memory.dmp

memory/4560-1-0x0000000000F00000-0x0000000000FFE000-memory.dmp

memory/4560-3-0x0000000000F00000-0x0000000000FFE000-memory.dmp

memory/4560-2-0x0000000000F6B000-0x0000000000FFE000-memory.dmp