Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-xjrx1s1jhr
Target JaffaCakes118_6ec78fd3ad79dfc0d185e2a677e7f620
SHA256 b9fe58c8e76825c1c67bcf9848851810b2497ad1215abe30556e9c4b4d62249c
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

b9fe58c8e76825c1c67bcf9848851810b2497ad1215abe30556e9c4b4d62249c

Threat Level: Known bad

The file JaffaCakes118_6ec78fd3ad79dfc0d185e2a677e7f620 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 18:53

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 18:53

Reported

2025-01-03 18:55

Platform

win7-20240903-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ec78fd3ad79dfc0d185e2a677e7f620.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_6ec78fd3ad79dfc0d185e2a677e7f620.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ec78fd3ad79dfc0d185e2a677e7f620.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ec78fd3ad79dfc0d185e2a677e7f620.exe"

Network

N/A

Files

memory/2420-0-0x000000000104D000-0x0000000001074000-memory.dmp

memory/2420-1-0x0000000001000000-0x0000000001074000-memory.dmp

memory/2420-2-0x000000000104D000-0x0000000001074000-memory.dmp

memory/2420-3-0x0000000001000000-0x0000000001074000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 18:53

Reported

2025-01-03 18:55

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ec78fd3ad79dfc0d185e2a677e7f620.exe"

Signatures

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_6ec78fd3ad79dfc0d185e2a677e7f620.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ec78fd3ad79dfc0d185e2a677e7f620.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ec78fd3ad79dfc0d185e2a677e7f620.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 29.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.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 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 60.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 61.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

N/A