Malware Analysis Report

2024-12-08 02:39

Sample ID 240914-aavk8awdpn
Target 9449add48b3bf6fbe8af528a9e6ff315b6308e0381725fc017b6aa9df864fa84
SHA256 9449add48b3bf6fbe8af528a9e6ff315b6308e0381725fc017b6aa9df864fa84
Tags
discovery upx backdoor floxif
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

9449add48b3bf6fbe8af528a9e6ff315b6308e0381725fc017b6aa9df864fa84

Threat Level: Known bad

The file 9449add48b3bf6fbe8af528a9e6ff315b6308e0381725fc017b6aa9df864fa84 was found to be: Known bad.

Malicious Activity Summary

discovery upx backdoor floxif

Floxif family

Detects Floxif payload

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-14 00:01

Signatures

Detects Floxif payload

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

Floxif family

floxif

ACProtect 1.3x - 1.4x DLL software

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

UPX packed file

upx
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
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-14 00:01

Reported

2024-09-14 00:03

Platform

win7-20240729-en

Max time kernel

140s

Max time network

20s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\9449add48b3bf6fbe8af528a9e6ff315b6308e0381725fc017b6aa9df864fa84.dll,#1

Signatures

UPX packed file

upx
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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\9449add48b3bf6fbe8af528a9e6ff315b6308e0381725fc017b6aa9df864fa84.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\9449add48b3bf6fbe8af528a9e6ff315b6308e0381725fc017b6aa9df864fa84.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2508 -s 272

Network

N/A

Files

memory/2508-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2508-2-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2508-1-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2508-3-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-14 00:01

Reported

2024-09-14 00:03

Platform

win10v2004-20240802-en

Max time kernel

92s

Max time network

95s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\9449add48b3bf6fbe8af528a9e6ff315b6308e0381725fc017b6aa9df864fa84.dll,#1

Signatures

UPX packed file

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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4988 wrote to memory of 4652 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4988 wrote to memory of 4652 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4988 wrote to memory of 4652 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\9449add48b3bf6fbe8af528a9e6ff315b6308e0381725fc017b6aa9df864fa84.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\9449add48b3bf6fbe8af528a9e6ff315b6308e0381725fc017b6aa9df864fa84.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4652 -ip 4652

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4652 -s 712

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/4652-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/4652-1-0x0000000010000000-0x0000000010030000-memory.dmp