Malware Analysis Report

2024-12-08 02:26

Sample ID 230616-t9xdmsfe8z
Target 08658799.exe
SHA256 4751f0015131775aa8bade11885bb027997dc7f2a2a266cc87a39e72555ad3ec
Tags
r77
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

4751f0015131775aa8bade11885bb027997dc7f2a2a266cc87a39e72555ad3ec

Threat Level: Known bad

The file 08658799.exe was found to be: Known bad.

Malicious Activity Summary

r77

r77 rootkit payload

R77 family

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-06-16 16:45

Signatures

R77 family

r77

r77 rootkit payload

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-06-16 16:45

Reported

2023-06-16 16:48

Platform

win7-20230220-en

Max time kernel

27s

Max time network

30s

Command Line

"C:\Users\Admin\AppData\Local\Temp\08658799.exe"

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\system32\WerFault.exe C:\Users\Admin\AppData\Local\Temp\08658799.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1212 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\08658799.exe C:\Windows\system32\WerFault.exe
PID 1212 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\08658799.exe C:\Windows\system32\WerFault.exe
PID 1212 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\08658799.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\08658799.exe

"C:\Users\Admin\AppData\Local\Temp\08658799.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 1212 -s 144

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-06-16 16:45

Reported

2023-06-16 16:48

Platform

win10v2004-20230220-en

Max time kernel

91s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\08658799.exe"

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\system32\WerFault.exe C:\Users\Admin\AppData\Local\Temp\08658799.exe

Processes

C:\Users\Admin\AppData\Local\Temp\08658799.exe

"C:\Users\Admin\AppData\Local\Temp\08658799.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -pss -s 364 -p 1976 -ip 1976

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 1976 -s 392

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 254.109.26.67.in-addr.arpa udp
US 8.8.8.8:53 38.146.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 8.8.8.8:53 123.108.74.40.in-addr.arpa udp
US 40.125.122.151:443 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 20.189.173.15:443 tcp
NL 173.223.113.131:80 tcp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 44.8.109.52.in-addr.arpa udp
US 8.8.8.8:53 2.36.159.162.in-addr.arpa udp
US 8.8.8.8:53 126.210.247.8.in-addr.arpa udp

Files

N/A