Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-tfxgjs1rfw
Target JaffaCakes118_6dc83d2781aa4ac66b74b7a7df51fd50
SHA256 7927fcd364cfa957fd28f76db54c61cb4d55e0edb592e26d54358f0b93efa0c2
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

7927fcd364cfa957fd28f76db54c61cb4d55e0edb592e26d54358f0b93efa0c2

Threat Level: Known bad

The file JaffaCakes118_6dc83d2781aa4ac66b74b7a7df51fd50 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 16:00

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 16:00

Reported

2025-01-03 16:03

Platform

win7-20240903-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6dc83d2781aa4ac66b74b7a7df51fd50.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_6dc83d2781aa4ac66b74b7a7df51fd50.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6dc83d2781aa4ac66b74b7a7df51fd50.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6dc83d2781aa4ac66b74b7a7df51fd50.exe"

Network

N/A

Files

memory/2024-0-0x0000000000400000-0x00000000005A6000-memory.dmp

memory/2024-1-0x0000000000403000-0x0000000000404000-memory.dmp

memory/2024-2-0x0000000000400000-0x00000000005A6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 16:00

Reported

2025-01-03 16:03

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6dc83d2781aa4ac66b74b7a7df51fd50.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_6dc83d2781aa4ac66b74b7a7df51fd50.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6dc83d2781aa4ac66b74b7a7df51fd50.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6dc83d2781aa4ac66b74b7a7df51fd50.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 181.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 167.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 21.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/3132-0-0x0000000000400000-0x00000000005A6000-memory.dmp

memory/3132-1-0x0000000000403000-0x0000000000404000-memory.dmp

memory/3132-2-0x0000000000400000-0x00000000005A6000-memory.dmp