Malware Analysis Report

2024-10-19 08:16

Sample ID 240831-g1g65szcra
Target cb59f7e129e7baecf4b3d8079935acbd.zip
SHA256 db995155e3c379737420b09a8bbfd5258decf96eb2347c3a82cb52ea7f9c8075
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

db995155e3c379737420b09a8bbfd5258decf96eb2347c3a82cb52ea7f9c8075

Threat Level: Known bad

The file cb59f7e129e7baecf4b3d8079935acbd.zip was found to be: Known bad.

Malicious Activity Summary

expiro backdoor discovery

Expiro, m0yv

Expiro payload

System Location Discovery: System Language Discovery

Unsigned PE

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-31 06:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 06:16

Reported

2024-08-31 06:18

Platform

win7-20240704-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bf62e855c7f4eebc89466099b5ef70778e5dcf551e079a405fb531b8dace8798.exe"

Signatures

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\bf62e855c7f4eebc89466099b5ef70778e5dcf551e079a405fb531b8dace8798.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bf62e855c7f4eebc89466099b5ef70778e5dcf551e079a405fb531b8dace8798.exe

"C:\Users\Admin\AppData\Local\Temp\bf62e855c7f4eebc89466099b5ef70778e5dcf551e079a405fb531b8dace8798.exe"

Network

N/A

Files

memory/2744-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/2744-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/2744-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/2744-3-0x0000000010000000-0x0000000010108000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 06:16

Reported

2024-08-31 06:18

Platform

win10v2004-20240802-en

Max time kernel

138s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bf62e855c7f4eebc89466099b5ef70778e5dcf551e079a405fb531b8dace8798.exe"

Signatures

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\bf62e855c7f4eebc89466099b5ef70778e5dcf551e079a405fb531b8dace8798.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bf62e855c7f4eebc89466099b5ef70778e5dcf551e079a405fb531b8dace8798.exe

"C:\Users\Admin\AppData\Local\Temp\bf62e855c7f4eebc89466099b5ef70778e5dcf551e079a405fb531b8dace8798.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 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

memory/3604-0-0x0000000010074000-0x0000000010108000-memory.dmp

memory/3604-1-0x0000000010000000-0x0000000010108000-memory.dmp

memory/3604-2-0x0000000010074000-0x0000000010108000-memory.dmp

memory/3604-3-0x0000000010000000-0x0000000010108000-memory.dmp