Malware Analysis Report

2024-12-08 02:43

Sample ID 240817-y6jetsxfnr
Target 0f0df076086673f5843ebc79ae4311d0N.exe
SHA256 5dda7293e07eb0cb4025e19318199003fb34490dfcf9ecd52872a4e2aeffe433
Tags
discovery upx persistence privilege_escalation 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

5dda7293e07eb0cb4025e19318199003fb34490dfcf9ecd52872a4e2aeffe433

Threat Level: Known bad

The file 0f0df076086673f5843ebc79ae4311d0N.exe was found to be: Known bad.

Malicious Activity Summary

discovery upx persistence privilege_escalation backdoor floxif

Detects Floxif payload

Floxif family

Event Triggered Execution: AppInit DLLs

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Unsigned PE

System Location Discovery: System Language Discovery

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-17 20:23

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 20:23

Reported

2024-08-17 20:25

Platform

win7-20240705-en

Max time kernel

118s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f0df076086673f5843ebc79ae4311d0N.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\0f0df076086673f5843ebc79ae4311d0N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f0df076086673f5843ebc79ae4311d0N.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1836 -s 308

Network

N/A

Files

memory/1836-1-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1836-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1836-2-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-17 20:23

Reported

2024-08-17 20:25

Platform

win10v2004-20240802-en

Max time kernel

103s

Max time network

104s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f0df076086673f5843ebc79ae4311d0N.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 2664 wrote to memory of 220 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2664 wrote to memory of 220 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2664 wrote to memory of 220 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\0f0df076086673f5843ebc79ae4311d0N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f0df076086673f5843ebc79ae4311d0N.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 220 -ip 220

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 220 -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 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

memory/220-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/220-1-0x0000000010000000-0x0000000010030000-memory.dmp