Malware Analysis Report

2024-10-23 20:58

Sample ID 240410-km65wshg43
Target eaaeb571a7212f3e5470f6655f774f70_JaffaCakes118
SHA256 8ba7cdb3043b64bd8f25c88ea741fb4f5f35602d06f6e57eafde06150cccf3b9
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

8ba7cdb3043b64bd8f25c88ea741fb4f5f35602d06f6e57eafde06150cccf3b9

Threat Level: Known bad

The file eaaeb571a7212f3e5470f6655f774f70_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

2024-04-10 08:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-10 08:44

Reported

2024-04-10 08:46

Platform

win7-20231129-en

Max time kernel

119s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\eaaeb571a7212f3e5470f6655f774f70_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
N/A N/A N/A N/A

Processes

C:\Users\Admin\AppData\Local\Temp\eaaeb571a7212f3e5470f6655f774f70_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\eaaeb571a7212f3e5470f6655f774f70_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2212 -s 88

Network

N/A

Files

memory/2212-0-0x0000000000D00000-0x0000000000E1F000-memory.dmp

memory/2212-1-0x0000000000D00000-0x0000000000E1F000-memory.dmp

memory/2212-2-0x0000000000D00000-0x0000000000E1F000-memory.dmp

memory/2212-3-0x0000000000D00000-0x0000000000E1F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-10 08:44

Reported

2024-04-10 08:46

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\eaaeb571a7212f3e5470f6655f774f70_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\eaaeb571a7212f3e5470f6655f774f70_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\eaaeb571a7212f3e5470f6655f774f70_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 412 -ip 412

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 412 -s 284

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 94.65.42.20.in-addr.arpa udp

Files

memory/412-0-0x0000000000600000-0x000000000071F000-memory.dmp

memory/412-1-0x0000000000600000-0x000000000071F000-memory.dmp

memory/412-2-0x0000000000600000-0x000000000071F000-memory.dmp