Malware Analysis Report

2024-12-07 20:18

Sample ID 241118-ssprsszdqk
Target 07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274N.exe
SHA256 07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274
Tags
skuld persistence
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

07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274

Threat Level: Known bad

The file 07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274N.exe was found to be: Known bad.

Malicious Activity Summary

skuld persistence

Skuld family

Adds Run key to start application

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Views/modifies file attributes

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-18 15:23

Signatures

Skuld family

skuld

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-18 15:23

Reported

2024-11-18 15:25

Platform

win7-20241010-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274N.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274N.exe

"C:\Users\Admin\AppData\Local\Temp\07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274N.exe"

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-18 15:23

Reported

2024-11-18 15:25

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

97s

Command Line

"C:\Users\Admin\AppData\Local\Temp\07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274N.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe" C:\Users\Admin\AppData\Local\Temp\07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274N.exe N/A

Views/modifies file attributes

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\attrib.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274N.exe

"C:\Users\Admin\AppData\Local\Temp\07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274N.exe"

C:\Windows\system32\attrib.exe

attrib +h +s C:\Users\Admin\AppData\Local\Temp\07bdeedc538bef90c448cd3c15b39442fd46c6c6d2895ab6b713fe9aaa514274N.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

N/A