Malware Analysis Report

2024-12-08 02:38

Sample ID 240913-xs3qwatfpf
Target 7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08
SHA256 7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08
Tags
floxif backdoor discovery persistence privilege_escalation trojan upx
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

7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08

Threat Level: Known bad

The file 7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08 was found to be: Known bad.

Malicious Activity Summary

floxif backdoor discovery persistence privilege_escalation trojan upx

Floxif, Floodfix

Detects Floxif payload

Event Triggered Execution: AppInit DLLs

Loads dropped DLL

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Program crash

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-13 19:07

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-13 19:07

Reported

2024-09-13 19:10

Platform

win7-20240729-en

Max time kernel

16s

Max time network

20s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08.exe"

Signatures

Floxif, Floodfix

backdoor trojan floxif

Detects Floxif payload

backdoor
Description Indicator Process Target
N/A N/A N/A N/A

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

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
N/A N/A N/A N/A
N/A N/A N/A N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Common Files\System\symsrv.dll C:\Users\Admin\AppData\Local\Temp\7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08.exe

"C:\Users\Admin\AppData\Local\Temp\7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08.exe"

Network

N/A

Files

memory/2172-3-0x0000000010000000-0x0000000010030000-memory.dmp

\Program Files\Common Files\System\symsrv.dll

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2172-5-0x0000000000850000-0x0000000000885000-memory.dmp

memory/2172-7-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-13 19:07

Reported

2024-09-13 19:10

Platform

win10v2004-20240910-en

Max time kernel

150s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08.exe

"C:\Users\Admin\AppData\Local\Temp\7d3f0e62031921f37dd7650cff71f4dfdb4802e8c2bca2dd6cc518247821cf08.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2900 -ip 2900

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 180

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 42.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

N/A