Malware Analysis Report

2024-10-19 08:16

Sample ID 240831-js6kwatarn
Target f2e2363ba761eff6077735e74d85256a.zip
SHA256 cc7cd5fdd77938ac99d1b11a51c314b2e0e95729287e00da98c537a007a7cd06
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

cc7cd5fdd77938ac99d1b11a51c314b2e0e95729287e00da98c537a007a7cd06

Threat Level: Known bad

The file f2e2363ba761eff6077735e74d85256a.zip was found to be: Known bad.

Malicious Activity Summary

expiro backdoor discovery

Expiro, m0yv

Expiro payload

Unsigned PE

System Location Discovery: System Language Discovery

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-31 07:56

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 07:56

Reported

2024-08-31 07:59

Platform

win7-20240704-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\03c8d8d9ef35d718c7aa375230a1b1a76ea19ad5b0d5e87681f9935ce55702e6.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\03c8d8d9ef35d718c7aa375230a1b1a76ea19ad5b0d5e87681f9935ce55702e6.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\03c8d8d9ef35d718c7aa375230a1b1a76ea19ad5b0d5e87681f9935ce55702e6.exe

"C:\Users\Admin\AppData\Local\Temp\03c8d8d9ef35d718c7aa375230a1b1a76ea19ad5b0d5e87681f9935ce55702e6.exe"

Network

N/A

Files

memory/2276-0-0x0000000000474000-0x0000000000507000-memory.dmp

memory/2276-1-0x0000000000400000-0x0000000000507000-memory.dmp

memory/2276-2-0x0000000000474000-0x0000000000507000-memory.dmp

memory/2276-3-0x0000000000400000-0x0000000000507000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 07:56

Reported

2024-08-31 07:59

Platform

win10v2004-20240802-en

Max time kernel

135s

Max time network

103s

Command Line

"C:\Users\Admin\AppData\Local\Temp\03c8d8d9ef35d718c7aa375230a1b1a76ea19ad5b0d5e87681f9935ce55702e6.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\03c8d8d9ef35d718c7aa375230a1b1a76ea19ad5b0d5e87681f9935ce55702e6.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\03c8d8d9ef35d718c7aa375230a1b1a76ea19ad5b0d5e87681f9935ce55702e6.exe

"C:\Users\Admin\AppData\Local\Temp\03c8d8d9ef35d718c7aa375230a1b1a76ea19ad5b0d5e87681f9935ce55702e6.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 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa 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/2828-0-0x0000000000474000-0x0000000000507000-memory.dmp

memory/2828-1-0x0000000000400000-0x0000000000507000-memory.dmp

memory/2828-2-0x0000000000474000-0x0000000000507000-memory.dmp

memory/2828-3-0x0000000000400000-0x0000000000507000-memory.dmp