Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-kvqg4swndz
Target JaffaCakes118_6b81a26989c934e6ff0c8171898827c2
SHA256 9e82771937bc88e75791f8e16f4613cf0d5aef6e47c772a048f7d29950eb5d82
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

9e82771937bc88e75791f8e16f4613cf0d5aef6e47c772a048f7d29950eb5d82

Threat Level: Known bad

The file JaffaCakes118_6b81a26989c934e6ff0c8171898827c2 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 08:55

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 08:55

Reported

2025-01-03 08:58

Platform

win7-20241010-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b81a26989c934e6ff0c8171898827c2.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
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_6b81a26989c934e6ff0c8171898827c2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b81a26989c934e6ff0c8171898827c2.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b81a26989c934e6ff0c8171898827c2.exe"

Network

N/A

Files

memory/1180-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/1180-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/1180-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/1180-3-0x0000000010000000-0x0000000010108000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 08:55

Reported

2025-01-03 08:58

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b81a26989c934e6ff0c8171898827c2.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
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_6b81a26989c934e6ff0c8171898827c2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b81a26989c934e6ff0c8171898827c2.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b81a26989c934e6ff0c8171898827c2.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 8.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 182.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/3736-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/3736-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/3736-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/3736-3-0x0000000010000000-0x0000000010108000-memory.dmp