Malware Analysis Report

2024-12-08 02:47

Sample ID 240817-g8e2ravejp
Target 568b600352a0c59e9afb9063bb681820N.exe
SHA256 0ad618ef4365a192173b581a946455de6df97c1723cda6ef54311d78126f7dd5
Tags
backdoor upx floxif discovery persistence privilege_escalation
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

0ad618ef4365a192173b581a946455de6df97c1723cda6ef54311d78126f7dd5

Threat Level: Known bad

The file 568b600352a0c59e9afb9063bb681820N.exe was found to be: Known bad.

Malicious Activity Summary

backdoor upx floxif discovery persistence privilege_escalation

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

2024-08-17 06:28

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

2024-08-17 06:28

Reported

2024-08-17 06:30

Platform

win7-20240705-en

Max time kernel

110s

Max time network

16s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\568b600352a0c59e9afb9063bb681820N.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\568b600352a0c59e9afb9063bb681820N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\568b600352a0c59e9afb9063bb681820N.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2776 -s 328

Network

N/A

Files

memory/2776-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2776-2-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2776-1-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2776-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2776-4-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-17 06:28

Reported

2024-08-17 06:30

Platform

win10v2004-20240802-en

Max time kernel

101s

Max time network

102s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\568b600352a0c59e9afb9063bb681820N.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 1512 wrote to memory of 2256 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1512 wrote to memory of 2256 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1512 wrote to memory of 2256 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\568b600352a0c59e9afb9063bb681820N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\568b600352a0c59e9afb9063bb681820N.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2256 -ip 2256

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 716

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 95.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/2256-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2256-1-0x0000000010000000-0x0000000010030000-memory.dmp