Malware Analysis Report

2025-04-13 23:45

Sample ID 250103-m78kkasqgp
Target JaffaCakes118_6c3021337032078bc6dc33e5309a2bac
SHA256 5f361804af8d5b0397b2471b95efa8fa987955698ea2e0dee9f3635afe6a0f47
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

5f361804af8d5b0397b2471b95efa8fa987955698ea2e0dee9f3635afe6a0f47

Threat Level: Known bad

The file JaffaCakes118_6c3021337032078bc6dc33e5309a2bac was found to be: Known bad.

Malicious Activity Summary

expiro backdoor discovery

Expiro family

Expiro, m0yv

Expiro payload

System Location Discovery: System Language Discovery

Unsigned PE

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-03 11:07

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 11:07

Reported

2025-01-03 11:10

Platform

win7-20240903-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c3021337032078bc6dc33e5309a2bac.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_6c3021337032078bc6dc33e5309a2bac.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c3021337032078bc6dc33e5309a2bac.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c3021337032078bc6dc33e5309a2bac.exe"

Network

N/A

Files

memory/2532-0-0x0000000001000000-0x00000000011D8000-memory.dmp

memory/2532-1-0x0000000001012000-0x0000000001013000-memory.dmp

memory/2532-2-0x0000000001000000-0x00000000011D8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 11:07

Reported

2025-01-03 11:10

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c3021337032078bc6dc33e5309a2bac.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_6c3021337032078bc6dc33e5309a2bac.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c3021337032078bc6dc33e5309a2bac.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c3021337032078bc6dc33e5309a2bac.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 8.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 4.173.189.20.in-addr.arpa udp

Files

memory/3348-0-0x0000000001000000-0x00000000011D8000-memory.dmp

memory/3348-1-0x0000000001012000-0x0000000001013000-memory.dmp

memory/3348-2-0x0000000001000000-0x00000000011D8000-memory.dmp