Malware Analysis Report

2024-10-19 08:14

Sample ID 240417-mcvp8ade31
Target f58bb4eef7f265e5df8fb1006056ac49_JaffaCakes118
SHA256 f6b32eb66bef73fd5654269f549f41b3114e52b2713bc0b749036e7bfae90c47
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

f6b32eb66bef73fd5654269f549f41b3114e52b2713bc0b749036e7bfae90c47

Threat Level: Known bad

The file f58bb4eef7f265e5df8fb1006056ac49_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 10:19

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-17 10:19

Reported

2024-04-17 10:22

Platform

win7-20240221-en

Max time kernel

121s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f58bb4eef7f265e5df8fb1006056ac49_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\f58bb4eef7f265e5df8fb1006056ac49_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f58bb4eef7f265e5df8fb1006056ac49_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2068 -s 68

Network

N/A

Files

memory/2068-0-0x0000000000020000-0x000000000011F000-memory.dmp

memory/2068-1-0x0000000000020000-0x000000000011F000-memory.dmp

memory/2068-2-0x0000000000020000-0x000000000011F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-17 10:19

Reported

2024-04-17 10:22

Platform

win10v2004-20240412-en

Max time kernel

94s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f58bb4eef7f265e5df8fb1006056ac49_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\f58bb4eef7f265e5df8fb1006056ac49_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f58bb4eef7f265e5df8fb1006056ac49_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2520 -ip 2520

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 256

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
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 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/2520-0-0x0000000000F70000-0x000000000106F000-memory.dmp

memory/2520-1-0x0000000000F70000-0x000000000106F000-memory.dmp

memory/2520-2-0x0000000000F70000-0x000000000106F000-memory.dmp