Malware Analysis Report

2024-10-19 08:15

Sample ID 240415-stgsksbh8x
Target f160b4aaad518b10dfc712bc54c37d11_JaffaCakes118
SHA256 a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e
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

a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e

Threat Level: Known bad

The file f160b4aaad518b10dfc712bc54c37d11_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

2024-04-15 15:24

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 15:24

Reported

2024-04-15 15:27

Platform

win7-20231129-en

Max time kernel

118s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f160b4aaad518b10dfc712bc54c37d11_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\f160b4aaad518b10dfc712bc54c37d11_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f160b4aaad518b10dfc712bc54c37d11_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 64

Network

N/A

Files

memory/624-0-0x0000000000DA0000-0x0000000000E9E000-memory.dmp

memory/624-1-0x0000000000DA0000-0x0000000000E9E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 15:24

Reported

2024-04-15 15:27

Platform

win10v2004-20240412-en

Max time kernel

93s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f160b4aaad518b10dfc712bc54c37d11_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\f160b4aaad518b10dfc712bc54c37d11_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f160b4aaad518b10dfc712bc54c37d11_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3060 -ip 3060

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3060 -s 256

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
NL 23.62.61.72:443 www.bing.com tcp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 72.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 24.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/3060-0-0x0000000000E90000-0x0000000000F8E000-memory.dmp

memory/3060-1-0x0000000000E90000-0x0000000000F8E000-memory.dmp

memory/3060-2-0x0000000000E90000-0x0000000000F8E000-memory.dmp