Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-t5fv4asre1
Target JaffaCakes118_6df9bce0161288f8bb8f56ef3e84a62c
SHA256 28cdf36b43f3c0d1c72e22ce6f78ce8a67e173a34d2b024384220baf493a09cd
Tags
expiro backdoor discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

28cdf36b43f3c0d1c72e22ce6f78ce8a67e173a34d2b024384220baf493a09cd

Threat Level: Known bad

The file JaffaCakes118_6df9bce0161288f8bb8f56ef3e84a62c 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 16:38

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 16:38

Reported

2025-01-03 16:40

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6df9bce0161288f8bb8f56ef3e84a62c.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_6df9bce0161288f8bb8f56ef3e84a62c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6df9bce0161288f8bb8f56ef3e84a62c.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6df9bce0161288f8bb8f56ef3e84a62c.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 166.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/4420-0-0x0000000000400000-0x00000000004D3000-memory.dmp

memory/4420-1-0x0000000000422000-0x0000000000423000-memory.dmp

memory/4420-2-0x0000000000400000-0x00000000004D3000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 16:38

Reported

2025-01-03 16:40

Platform

win7-20241010-en

Max time kernel

121s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6df9bce0161288f8bb8f56ef3e84a62c.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_6df9bce0161288f8bb8f56ef3e84a62c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6df9bce0161288f8bb8f56ef3e84a62c.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6df9bce0161288f8bb8f56ef3e84a62c.exe"

Network

N/A

Files

memory/1664-0-0x0000000000400000-0x00000000004D3000-memory.dmp

memory/1664-1-0x0000000000422000-0x0000000000423000-memory.dmp

memory/1664-2-0x0000000000400000-0x00000000004D3000-memory.dmp