Malware Analysis Report

2024-10-23 20:58

Sample ID 240409-vgf2magd4y
Target ea783ac96b335efd74756a84f3d64215_JaffaCakes118
SHA256 248ad1e3c0b9078006a48fe793f75362a435addff3386fe02f18d4c4331d08aa
Tags
expiro backdoor
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

248ad1e3c0b9078006a48fe793f75362a435addff3386fe02f18d4c4331d08aa

Threat Level: Known bad

The file ea783ac96b335efd74756a84f3d64215_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

expiro backdoor

Expiro, m0yv

Expiro payload

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-09 16:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-09 16:57

Reported

2024-04-09 17:00

Platform

win7-20240221-en

Max time kernel

122s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ea783ac96b335efd74756a84f3d64215_JaffaCakes118.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\ea783ac96b335efd74756a84f3d64215_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ea783ac96b335efd74756a84f3d64215_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1948 -s 144

Network

N/A

Files

memory/1948-0-0x0000000000BC0000-0x0000000000CCF000-memory.dmp

memory/1948-1-0x0000000000BC0000-0x0000000000CCF000-memory.dmp

memory/1948-2-0x0000000000BC0000-0x0000000000CCF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-09 16:57

Reported

2024-04-09 17:00

Platform

win10v2004-20240226-en

Max time kernel

145s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ea783ac96b335efd74756a84f3d64215_JaffaCakes118.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\ea783ac96b335efd74756a84f3d64215_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ea783ac96b335efd74756a84f3d64215_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3620 -ip 3620

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3620 -s 528

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 8.192.122.92.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 17.143.109.104.in-addr.arpa udp
US 8.8.8.8:53 104.211.222.173.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 169.117.168.52.in-addr.arpa udp

Files

memory/3620-0-0x00000000003D0000-0x00000000004DF000-memory.dmp

memory/3620-1-0x00000000003D0000-0x00000000004DF000-memory.dmp

memory/3620-2-0x00000000003D0000-0x00000000004DF000-memory.dmp