Malware Analysis Report

2025-05-28 18:56

Sample ID 241110-tkqjsszfmn
Target 6ec2b44f718b13b99ce1c3c84f9bab0fff0ff7d11b1c5c33b56724454f58cdccN
SHA256 6ec2b44f718b13b99ce1c3c84f9bab0fff0ff7d11b1c5c33b56724454f58cdcc
Tags
backdoor upx floxif discovery
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

6ec2b44f718b13b99ce1c3c84f9bab0fff0ff7d11b1c5c33b56724454f58cdcc

Threat Level: Known bad

The file 6ec2b44f718b13b99ce1c3c84f9bab0fff0ff7d11b1c5c33b56724454f58cdccN was found to be: Known bad.

Malicious Activity Summary

backdoor upx floxif discovery

Detects Floxif payload

Floxif family

ACProtect 1.3x - 1.4x DLL software

UPX packed file

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-10 16:07

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

2024-11-10 16:07

Reported

2024-11-10 16:09

Platform

win7-20241010-en

Max time kernel

16s

Max time network

18s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6ec2b44f718b13b99ce1c3c84f9bab0fff0ff7d11b1c5c33b56724454f58cdccN.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
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\6ec2b44f718b13b99ce1c3c84f9bab0fff0ff7d11b1c5c33b56724454f58cdccN.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6ec2b44f718b13b99ce1c3c84f9bab0fff0ff7d11b1c5c33b56724454f58cdccN.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2000 -s 328

Network

N/A

Files

memory/2000-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2000-2-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2000-1-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2000-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2000-4-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-10 16:07

Reported

2024-11-10 16:09

Platform

win10v2004-20241007-en

Max time kernel

92s

Max time network

96s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6ec2b44f718b13b99ce1c3c84f9bab0fff0ff7d11b1c5c33b56724454f58cdccN.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 3764 wrote to memory of 2760 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3764 wrote to memory of 2760 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3764 wrote to memory of 2760 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\6ec2b44f718b13b99ce1c3c84f9bab0fff0ff7d11b1c5c33b56724454f58cdccN.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6ec2b44f718b13b99ce1c3c84f9bab0fff0ff7d11b1c5c33b56724454f58cdccN.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2760 -ip 2760

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2760 -s 712

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 98.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp

Files

memory/2760-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2760-1-0x0000000010000000-0x0000000010030000-memory.dmp