Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-rtwq3a1qer
Target JaffaCakes118_6d4d81e46e29a5dbaec6671abb691460
SHA256 b7d47cd82c1e0f1a9af50d33bc52576d21302b5893116cc44a8a0c14b805c9d4
Tags
expiro backdoor discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

b7d47cd82c1e0f1a9af50d33bc52576d21302b5893116cc44a8a0c14b805c9d4

Threat Level: Known bad

The file JaffaCakes118_6d4d81e46e29a5dbaec6671abb691460 was found to be: Known bad.

Malicious Activity Summary

expiro backdoor discovery

Expiro family

Expiro, m0yv

Expiro payload

Unsigned PE

System Location Discovery: System Language Discovery

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-03 14:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 14:29

Reported

2025-01-03 14:32

Platform

win7-20240729-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d4d81e46e29a5dbaec6671abb691460.exe"

Signatures

Expiro family

expiro

Expiro, m0yv

backdoor expiro

Expiro payload

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d4d81e46e29a5dbaec6671abb691460.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d4d81e46e29a5dbaec6671abb691460.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d4d81e46e29a5dbaec6671abb691460.exe"

Network

N/A

Files

memory/2504-0-0x0000000001000000-0x00000000011B8000-memory.dmp

memory/2504-1-0x0000000001003000-0x0000000001005000-memory.dmp

memory/2504-2-0x0000000001000000-0x00000000011B8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 14:29

Reported

2025-01-03 14:32

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d4d81e46e29a5dbaec6671abb691460.exe"

Signatures

Expiro family

expiro

Expiro, m0yv

backdoor expiro

Expiro payload

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d4d81e46e29a5dbaec6671abb691460.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d4d81e46e29a5dbaec6671abb691460.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d4d81e46e29a5dbaec6671abb691460.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 181.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/2932-0-0x0000000001000000-0x00000000011B8000-memory.dmp

memory/2932-1-0x0000000001003000-0x0000000001005000-memory.dmp

memory/2932-2-0x0000000001000000-0x00000000011B8000-memory.dmp