Malware Analysis Report

2024-11-13 20:02

Sample ID 240909-ztxx5azdml
Target 44f1f0bce42f7ccc61f9f682d51c2325de46cc3a1e706e118431ca1c2b2f8e56
SHA256 44f1f0bce42f7ccc61f9f682d51c2325de46cc3a1e706e118431ca1c2b2f8e56
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

44f1f0bce42f7ccc61f9f682d51c2325de46cc3a1e706e118431ca1c2b2f8e56

Threat Level: Known bad

The file 44f1f0bce42f7ccc61f9f682d51c2325de46cc3a1e706e118431ca1c2b2f8e56 was found to be: Known bad.

Malicious Activity Summary

backdoor upx floxif discovery

Floxif family

Detects Floxif payload

ACProtect 1.3x - 1.4x DLL software

UPX packed file

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-09 21:01

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

2024-09-09 21:01

Reported

2024-09-09 21:03

Platform

win7-20240903-en

Max time kernel

140s

Max time network

19s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\44f1f0bce42f7ccc61f9f682d51c2325de46cc3a1e706e118431ca1c2b2f8e56.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\44f1f0bce42f7ccc61f9f682d51c2325de46cc3a1e706e118431ca1c2b2f8e56.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\44f1f0bce42f7ccc61f9f682d51c2325de46cc3a1e706e118431ca1c2b2f8e56.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 280 -s 316

Network

N/A

Files

memory/280-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/280-2-0x0000000010000000-0x0000000010030000-memory.dmp

memory/280-1-0x0000000010000000-0x0000000010030000-memory.dmp

memory/280-3-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-09 21:01

Reported

2024-09-09 21:03

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\44f1f0bce42f7ccc61f9f682d51c2325de46cc3a1e706e118431ca1c2b2f8e56.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 3860 wrote to memory of 1700 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3860 wrote to memory of 1700 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3860 wrote to memory of 1700 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\44f1f0bce42f7ccc61f9f682d51c2325de46cc3a1e706e118431ca1c2b2f8e56.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\44f1f0bce42f7ccc61f9f682d51c2325de46cc3a1e706e118431ca1c2b2f8e56.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1700 -ip 1700

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 692

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.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 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 90.65.42.20.in-addr.arpa udp

Files

memory/1700-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1700-1-0x0000000010000000-0x0000000010030000-memory.dmp