Malware Analysis Report

2024-11-13 20:02

Sample ID 240909-ydnh3swemp
Target 0eb5594164ec395358d4cbaf0fc6c5d0N
SHA256 0dcf69e3d7ca283ddddcb429f4c72637f2970f7180d789088a20952ef66e0635
Tags
discovery persistence privilege_escalation 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

0dcf69e3d7ca283ddddcb429f4c72637f2970f7180d789088a20952ef66e0635

Threat Level: Known bad

The file 0eb5594164ec395358d4cbaf0fc6c5d0N was found to be: Known bad.

Malicious Activity Summary

discovery persistence privilege_escalation upx backdoor floxif

Detects Floxif payload

Floxif family

Event Triggered Execution: AppInit DLLs

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-09 19:40

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

2024-09-09 19:40

Reported

2024-09-09 19:42

Platform

win7-20240903-en

Max time kernel

111s

Max time network

19s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0eb5594164ec395358d4cbaf0fc6c5d0N.dll,#1

Signatures

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

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\0eb5594164ec395358d4cbaf0fc6c5d0N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0eb5594164ec395358d4cbaf0fc6c5d0N.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2752 -s 336

Network

N/A

Files

memory/2752-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2752-2-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2752-1-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2752-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2752-4-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-09 19:40

Reported

2024-09-09 19:42

Platform

win10v2004-20240802-en

Max time kernel

110s

Max time network

124s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0eb5594164ec395358d4cbaf0fc6c5d0N.dll,#1

Signatures

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

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 3952 wrote to memory of 3504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3952 wrote to memory of 3504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3952 wrote to memory of 3504 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\0eb5594164ec395358d4cbaf0fc6c5d0N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0eb5594164ec395358d4cbaf0fc6c5d0N.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3504 -ip 3504

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3504 -s 692

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 42.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 45.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 216.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 216.143.123.92.in-addr.arpa udp

Files

memory/3504-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3504-2-0x0000000010000000-0x0000000010030000-memory.dmp