Malware Analysis Report

2024-12-08 02:37

Sample ID 240913-q5eq9asgrm
Target 2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia
SHA256 c2bb9d453948dabae47faf866d3bc52290f4bc0da911c4ddeddf43357dbb06b2
Tags
floxif backdoor discovery trojan upx 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

c2bb9d453948dabae47faf866d3bc52290f4bc0da911c4ddeddf43357dbb06b2

Threat Level: Known bad

The file 2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia was found to be: Known bad.

Malicious Activity Summary

floxif backdoor discovery trojan upx persistence privilege_escalation

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

Program crash

System Location Discovery: System Language Discovery

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-13 13:50

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-13 13:50

Reported

2024-09-13 13:52

Platform

win7-20240708-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.exe"

Signatures

Floxif, Floodfix

backdoor trojan floxif

Detects Floxif payload

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

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\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.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\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.exe"

Network

N/A

Files

memory/2700-3-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2700-7-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2700-5-0x0000000000110000-0x00000000003B8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-13 13:50

Reported

2024-09-13 13:52

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.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\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.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\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-09-13_fcd3267bb69bed3e3aba9087d8cc380b_floxif_hijackloader_mafia.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2292 -ip 2292

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2292 -s 816

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2292-4-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2292-6-0x0000000000211000-0x0000000000212000-memory.dmp

memory/2292-11-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2292-9-0x0000000000210000-0x00000000004B8000-memory.dmp