Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-vxztnsxpaj
Target JaffaCakes118_6e3bec860077b1b3d4da43f469409d22
SHA256 03acb543b6b23dec1946a5fc9bb29563f0b57f8b8d88230398eb52fef8721d80
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

03acb543b6b23dec1946a5fc9bb29563f0b57f8b8d88230398eb52fef8721d80

Threat Level: Known bad

The file JaffaCakes118_6e3bec860077b1b3d4da43f469409d22 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 17:22

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 17:22

Reported

2025-01-03 17:25

Platform

win7-20240903-en

Max time kernel

122s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e3bec860077b1b3d4da43f469409d22.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_6e3bec860077b1b3d4da43f469409d22.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e3bec860077b1b3d4da43f469409d22.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e3bec860077b1b3d4da43f469409d22.exe"

Network

N/A

Files

memory/2068-0-0x0000000001000000-0x00000000011C1000-memory.dmp

memory/2068-1-0x0000000001019000-0x000000000101A000-memory.dmp

memory/2068-2-0x0000000001000000-0x00000000011C1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 17:22

Reported

2025-01-03 17:25

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e3bec860077b1b3d4da43f469409d22.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_6e3bec860077b1b3d4da43f469409d22.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e3bec860077b1b3d4da43f469409d22.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e3bec860077b1b3d4da43f469409d22.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 182.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 166.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 85.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 29.153.16.2.in-addr.arpa udp

Files

memory/2768-0-0x0000000001000000-0x00000000011C1000-memory.dmp

memory/2768-1-0x0000000001019000-0x000000000101A000-memory.dmp

memory/2768-2-0x0000000001000000-0x00000000011C1000-memory.dmp