Malware Analysis Report

2024-12-08 02:42

Sample ID 240913-ar15bsterp
Target 2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia
SHA256 da6d5e424ca78cbb7c76a30fd002c3f317bb833125fd210793a524ee3897427e
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

da6d5e424ca78cbb7c76a30fd002c3f317bb833125fd210793a524ee3897427e

Threat Level: Known bad

The file 2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia 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

UPX packed file

ACProtect 1.3x - 1.4x DLL software

Loads dropped DLL

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Modifies system certificate store

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-13 00:27

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-13 00:27

Reported

2024-09-13 00:30

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe 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_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_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_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe N/A

Modifies system certificate store

evasion spyware trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\02FAF3E291435468607857694DF5E45B68851868 C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\02FAF3E291435468607857694DF5E45B68851868\Blob = 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 C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\AFE5D244A8D1194230FF479FE2F897BBCD7A8CB4 C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\AFE5D244A8D1194230FF479FE2F897BBCD7A8CB4\Blob = 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 C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_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_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe"

Network

N/A

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2096-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2096-7-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2096-5-0x0000000000870000-0x0000000000C44000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-13 00:27

Reported

2024-09-13 00:30

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

98s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe 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_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_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_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_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_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-09-13_9beaaa0c59bd0ee860b041ebce9a35e4_floxif_mafia.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 107.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/4976-4-0x0000000010000000-0x0000000010030000-memory.dmp

memory/4976-6-0x00000000005A1000-0x00000000005A2000-memory.dmp

memory/4976-11-0x0000000010000000-0x0000000010030000-memory.dmp

memory/4976-9-0x00000000005A0000-0x0000000000974000-memory.dmp