Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-wxgtjawqby
Target JaffaCakes118_6e8e6ff568c7db969b71a4879b13ab69
SHA256 c1c82663a31c0b98db24377e69564921de9e30a71300e64660044d2462227ac2
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

c1c82663a31c0b98db24377e69564921de9e30a71300e64660044d2462227ac2

Threat Level: Known bad

The file JaffaCakes118_6e8e6ff568c7db969b71a4879b13ab69 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 18:17

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 18:17

Reported

2025-01-03 18:20

Platform

win7-20241010-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e8e6ff568c7db969b71a4879b13ab69.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_6e8e6ff568c7db969b71a4879b13ab69.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e8e6ff568c7db969b71a4879b13ab69.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e8e6ff568c7db969b71a4879b13ab69.exe"

Network

N/A

Files

memory/2712-0-0x0000000000400000-0x00000000005D8000-memory.dmp

memory/2712-1-0x0000000000404000-0x0000000000405000-memory.dmp

memory/2712-2-0x0000000000400000-0x00000000005D8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 18:17

Reported

2025-01-03 18:20

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e8e6ff568c7db969b71a4879b13ab69.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_6e8e6ff568c7db969b71a4879b13ab69.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e8e6ff568c7db969b71a4879b13ab69.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e8e6ff568c7db969b71a4879b13ab69.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 182.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 167.190.18.2.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
US 8.8.8.8:53 86.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/1520-0-0x0000000000400000-0x00000000005D8000-memory.dmp

memory/1520-1-0x0000000000404000-0x0000000000405000-memory.dmp

memory/1520-2-0x0000000000400000-0x00000000005D8000-memory.dmp