Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-yak9jssnap
Target JaffaCakes118_6f095bcef5e6819601b79a41404ce3f0
SHA256 bacca1ebe9acef7abe8e1c22eb1d408f9a11c7f41a14bda7c6160a5ef4d43edc
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

bacca1ebe9acef7abe8e1c22eb1d408f9a11c7f41a14bda7c6160a5ef4d43edc

Threat Level: Known bad

The file JaffaCakes118_6f095bcef5e6819601b79a41404ce3f0 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 19:34

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 19:34

Reported

2025-01-03 19:37

Platform

win7-20241010-en

Max time kernel

120s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f095bcef5e6819601b79a41404ce3f0.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_6f095bcef5e6819601b79a41404ce3f0.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f095bcef5e6819601b79a41404ce3f0.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f095bcef5e6819601b79a41404ce3f0.exe"

Network

N/A

Files

memory/2892-0-0x0000000001000000-0x00000000011A1000-memory.dmp

memory/2892-1-0x0000000001001000-0x0000000001003000-memory.dmp

memory/2892-2-0x0000000001000000-0x00000000011A1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 19:34

Reported

2025-01-03 19:37

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f095bcef5e6819601b79a41404ce3f0.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_6f095bcef5e6819601b79a41404ce3f0.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f095bcef5e6819601b79a41404ce3f0.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f095bcef5e6819601b79a41404ce3f0.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 134.130.81.91.in-addr.arpa udp
US 8.8.8.8:53 29.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 8.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/2312-0-0x0000000001000000-0x00000000011A1000-memory.dmp

memory/2312-1-0x0000000001001000-0x0000000001003000-memory.dmp

memory/2312-2-0x0000000001000000-0x00000000011A1000-memory.dmp