Malware Analysis Report

2025-04-13 23:46

Sample ID 250103-zm2yhavrej
Target JaffaCakes118_6f890bc4ec1c52e59bcf325f4caf9897
SHA256 f97ae781d72f60c4d44646027f575320eefced2bf4da6cb436339782bf7bef51
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

f97ae781d72f60c4d44646027f575320eefced2bf4da6cb436339782bf7bef51

Threat Level: Known bad

The file JaffaCakes118_6f890bc4ec1c52e59bcf325f4caf9897 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 20:50

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-03 20:50

Reported

2025-01-03 20:53

Platform

win7-20240729-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f890bc4ec1c52e59bcf325f4caf9897.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_6f890bc4ec1c52e59bcf325f4caf9897.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f890bc4ec1c52e59bcf325f4caf9897.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f890bc4ec1c52e59bcf325f4caf9897.exe"

Network

N/A

Files

memory/2772-0-0x0000000000400000-0x00000000005A9000-memory.dmp

memory/2772-1-0x000000000040C000-0x000000000040D000-memory.dmp

memory/2772-2-0x0000000000400000-0x00000000005A9000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-03 20:50

Reported

2025-01-03 20:53

Platform

win10v2004-20241007-en

Max time kernel

116s

Max time network

117s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f890bc4ec1c52e59bcf325f4caf9897.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_6f890bc4ec1c52e59bcf325f4caf9897.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f890bc4ec1c52e59bcf325f4caf9897.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f890bc4ec1c52e59bcf325f4caf9897.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 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/1216-0-0x0000000000400000-0x00000000005A9000-memory.dmp

memory/1216-1-0x000000000040C000-0x000000000040D000-memory.dmp

memory/1216-2-0x0000000000400000-0x00000000005A9000-memory.dmp