Malware Analysis Report

2025-01-02 07:33

Sample ID 240816-sjy9wa1erg
Target 20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia
SHA256 a37ca94ff80f6f2b6238507d345c3ab57d29a4b965734fa9100c1778bd7312fc
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a37ca94ff80f6f2b6238507d345c3ab57d29a4b965734fa9100c1778bd7312fc

Threat Level: Known bad

The file 20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia 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

ACProtect 1.3x - 1.4x DLL software

Loads dropped DLL

UPX packed file

Drops file in Program Files directory

Program crash

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-16 15:09

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-16 15:09

Reported

2024-08-16 15:12

Platform

win10v2004-20240802-en

Max time kernel

132s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.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\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.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\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.exe

"C:\Users\Admin\AppData\Local\Temp\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1004 -ip 1004

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1004 -s 804

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1004 -ip 1004

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1004 -s 816

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 3.181.190.20.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 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 101.58.20.217.in-addr.arpa udp
US 52.111.229.48:443 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa 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 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/1004-4-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1004-6-0x0000000000FE1000-0x0000000000FE2000-memory.dmp

memory/1004-11-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1004-9-0x0000000000FE0000-0x0000000001288000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-16 15:09

Reported

2024-08-16 15:12

Platform

win7-20240705-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.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\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.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\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.exe

"C:\Users\Admin\AppData\Local\Temp\20240816c387a0580a9fb0823405e6c5b1c16066floxifhijackloadermafia.exe"

Network

N/A

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2436-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2436-7-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2436-5-0x0000000000A00000-0x0000000000CA8000-memory.dmp