Malware Analysis Report

2024-11-30 23:24

Sample ID 230907-kf98zafg2z
Target 3384-11-0x0000000000400000-0x0000000000407000-memory.dmp
SHA256 a91cfa1460d17cf1c26ae940d1c666dada3900e7f779e6242a258fab640db211
Tags
systembc
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

a91cfa1460d17cf1c26ae940d1c666dada3900e7f779e6242a258fab640db211

Threat Level: Known bad

The file 3384-11-0x0000000000400000-0x0000000000407000-memory.dmp was found to be: Known bad.

Malicious Activity Summary

systembc

Systembc family

Drops file in System32 directory

Unsigned PE

Program crash

Checks processor information in registry

Enumerates system info in registry

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-07 08:33

Signatures

Systembc family

systembc

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-07 08:33

Reported

2023-09-07 08:36

Platform

win7-20230831-en

Max time kernel

119s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3384-11-0x0000000000400000-0x0000000000407000-memory.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\3384-11-0x0000000000400000-0x0000000000407000-memory.exe

"C:\Users\Admin\AppData\Local\Temp\3384-11-0x0000000000400000-0x0000000000407000-memory.exe"

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-07 08:33

Reported

2023-09-07 08:36

Platform

win10v2004-20230831-en

Max time kernel

150s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3384-11-0x0000000000400000-0x0000000000407000-memory.exe"

Signatures

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{FD92254C-D9E3-4523-8B33-CFD620FE1FCC}.catalogItem C:\Windows\System32\svchost.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\System32\svchost.exe N/A
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Windows\System32\svchost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\System32\svchost.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Windows\System32\svchost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Windows\System32\svchost.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\3384-11-0x0000000000400000-0x0000000000407000-memory.exe

"C:\Users\Admin\AppData\Local\Temp\3384-11-0x0000000000400000-0x0000000000407000-memory.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3844 -ip 3844

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3844 -s 216

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k netsvcs -p

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 90.16.208.104.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp

Files

N/A