Malware Analysis Report

2024-10-19 08:14

Sample ID 240417-1jlb1seh62
Target f6a12268ae375404fd2b87e1e80a10f1_JaffaCakes118
SHA256 40c02a48e2c4f07dc9e25abbfc83e1daa6869d0e2356fb12c992d1bec38a723e
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

40c02a48e2c4f07dc9e25abbfc83e1daa6869d0e2356fb12c992d1bec38a723e

Threat Level: Known bad

The file f6a12268ae375404fd2b87e1e80a10f1_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

expiro backdoor

Expiro, m0yv

Expiro payload

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-17 21:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-17 21:40

Reported

2024-04-17 21:43

Platform

win7-20231129-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f6a12268ae375404fd2b87e1e80a10f1_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\f6a12268ae375404fd2b87e1e80a10f1_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f6a12268ae375404fd2b87e1e80a10f1_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2888 -s 68

Network

N/A

Files

memory/2888-0-0x0000000000BF0000-0x0000000000CEF000-memory.dmp

memory/2888-1-0x0000000000BF0000-0x0000000000CEF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-17 21:40

Reported

2024-04-17 21:43

Platform

win10v2004-20240412-en

Max time kernel

146s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f6a12268ae375404fd2b87e1e80a10f1_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\f6a12268ae375404fd2b87e1e80a10f1_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f6a12268ae375404fd2b87e1e80a10f1_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4472 -ip 4472

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4472 -s 252

Network

Country Destination Domain Proto
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 132.250.30.184.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 163.143.109.104.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 17.173.189.20.in-addr.arpa udp

Files

memory/4472-0-0x00000000005D0000-0x00000000006CF000-memory.dmp

memory/4472-1-0x00000000005D0000-0x00000000006CF000-memory.dmp

memory/4472-2-0x00000000005D0000-0x00000000006CF000-memory.dmp