Malware Analysis Report

2024-10-19 08:15

Sample ID 240417-m1t4laec3z
Target f59c7f968b7af0b65e3944acf921106f_JaffaCakes118
SHA256 742c592f403e6ca27a661bce036058d6f2d1505ccf8f470f2c81c82e1ab675d6
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

742c592f403e6ca27a661bce036058d6f2d1505ccf8f470f2c81c82e1ab675d6

Threat Level: Known bad

The file f59c7f968b7af0b65e3944acf921106f_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

2024-04-17 10:56

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-17 10:56

Reported

2024-04-17 10:58

Platform

win7-20240319-en

Max time kernel

121s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f59c7f968b7af0b65e3944acf921106f_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\f59c7f968b7af0b65e3944acf921106f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f59c7f968b7af0b65e3944acf921106f_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2324 -s 124

Network

N/A

Files

memory/2324-0-0x0000000001220000-0x000000000130E000-memory.dmp

memory/2324-1-0x0000000001220000-0x000000000130E000-memory.dmp

memory/2324-2-0x0000000001220000-0x000000000130E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-17 10:56

Reported

2024-04-17 10:58

Platform

win10v2004-20240412-en

Max time kernel

146s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f59c7f968b7af0b65e3944acf921106f_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\f59c7f968b7af0b65e3944acf921106f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f59c7f968b7af0b65e3944acf921106f_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 5032 -ip 5032

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5032 -s 336

Network

Country Destination Domain Proto
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 98.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 209.143.182.52.in-addr.arpa udp

Files

memory/5032-0-0x0000000000C40000-0x0000000000D2E000-memory.dmp

memory/5032-1-0x0000000000C40000-0x0000000000D2E000-memory.dmp

memory/5032-2-0x0000000000C40000-0x0000000000D2E000-memory.dmp