Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-mxc1xaslgm
Target JaffaCakes118_6c1a3ddfda2190d55c5bdd952aa44248
SHA256 c85182d845f5c7144a20df12d72d471436f880203c8c2e0ab4b67c0884461985
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

c85182d845f5c7144a20df12d72d471436f880203c8c2e0ab4b67c0884461985

Threat Level: Known bad

The file JaffaCakes118_6c1a3ddfda2190d55c5bdd952aa44248 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 10:50

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 10:50

Reported

2025-01-03 10:52

Platform

win7-20240903-en

Max time kernel

121s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c1a3ddfda2190d55c5bdd952aa44248.exe"

Signatures

Expiro family

expiro

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

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_6c1a3ddfda2190d55c5bdd952aa44248.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c1a3ddfda2190d55c5bdd952aa44248.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c1a3ddfda2190d55c5bdd952aa44248.exe"

Network

N/A

Files

memory/2164-0-0x0000000000400000-0x000000000059E000-memory.dmp

memory/2164-1-0x0000000000403000-0x0000000000404000-memory.dmp

memory/2164-2-0x0000000000400000-0x000000000059E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 10:50

Reported

2025-01-03 10:52

Platform

win10v2004-20241007-en

Max time kernel

91s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c1a3ddfda2190d55c5bdd952aa44248.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_6c1a3ddfda2190d55c5bdd952aa44248.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c1a3ddfda2190d55c5bdd952aa44248.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c1a3ddfda2190d55c5bdd952aa44248.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 8.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 133.130.81.91.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/4188-0-0x0000000000400000-0x000000000059E000-memory.dmp

memory/4188-1-0x0000000000403000-0x0000000000404000-memory.dmp

memory/4188-2-0x0000000000400000-0x000000000059E000-memory.dmp