Malware Analysis Report

2024-10-23 16:23

Sample ID 240522-knrftshh8w
Target 2024-05-22_b3fba71bcb0e8f3e1293fa00bfedc780_stop
SHA256 ba73bf118d737e6b4a0938d80f436bb188bcd38880ea8401b2131df5c93b5e84
Tags
djvu
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

ba73bf118d737e6b4a0938d80f436bb188bcd38880ea8401b2131df5c93b5e84

Threat Level: Known bad

The file 2024-05-22_b3fba71bcb0e8f3e1293fa00bfedc780_stop was found to be: Known bad.

Malicious Activity Summary

djvu

Detected Djvu ransomware

Djvu family

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-22 08:45

Signatures

Detected Djvu ransomware

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

Djvu family

djvu

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-22 08:45

Reported

2024-05-22 08:47

Platform

win7-20240221-en

Max time kernel

122s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-22_b3fba71bcb0e8f3e1293fa00bfedc780_stop.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-22_b3fba71bcb0e8f3e1293fa00bfedc780_stop.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-22_b3fba71bcb0e8f3e1293fa00bfedc780_stop.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1948 -s 192

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-22 08:45

Reported

2024-05-22 08:47

Platform

win10v2004-20240426-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-22_b3fba71bcb0e8f3e1293fa00bfedc780_stop.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-22_b3fba71bcb0e8f3e1293fa00bfedc780_stop.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-22_b3fba71bcb0e8f3e1293fa00bfedc780_stop.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1660 -ip 1660

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 568

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.99:443 www.bing.com tcp
US 8.8.8.8:53 147.211.222.173.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 99.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.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 20.231.121.79:80 tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.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 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 224.162.46.104.in-addr.arpa udp

Files

N/A