Malware Analysis Report

2025-01-02 07:21

Sample ID 240916-qybq1szfrd
Target 20240916c8e477d2d16083da219bebfd75c062b4floxifmafia
SHA256 6725e711b60054b1bcf005f128d55efa78eb9c2aac0a60434fe31c83f9c29c53
Tags
floxif backdoor discovery 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

6725e711b60054b1bcf005f128d55efa78eb9c2aac0a60434fe31c83f9c29c53

Threat Level: Known bad

The file 20240916c8e477d2d16083da219bebfd75c062b4floxifmafia was found to be: Known bad.

Malicious Activity Summary

floxif backdoor discovery trojan upx

Floxif, Floodfix

Detects Floxif payload

ACProtect 1.3x - 1.4x DLL software

Loads dropped DLL

UPX packed file

Enumerates connected drives

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-16 13:39

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-16 13:39

Reported

2024-09-16 13:42

Platform

win7-20240708-en

Max time kernel

117s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.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\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.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\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.exe

"C:\Users\Admin\AppData\Local\Temp\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.exe"

Network

N/A

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/3044-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3044-7-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3044-5-0x0000000001280000-0x00000000014EA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-16 13:39

Reported

2024-09-16 13:42

Platform

win10v2004-20240802-en

Max time kernel

131s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.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

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.exe 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\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.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\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.exe

"C:\Users\Admin\AppData\Local\Temp\20240916c8e477d2d16083da219bebfd75c062b4floxifmafia.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1700 -ip 1700

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 1700 -ip 1700

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 924

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 848

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1700 -ip 1700

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 960

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3820,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=1424 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 com.google.input_tools.skinui udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 com.google.input_tools.keyboard_input udp
US 8.8.8.8:53 com.google.input_tools.input_method_switch udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/1700-4-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1700-6-0x0000000000461000-0x0000000000462000-memory.dmp

memory/1700-13-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1700-11-0x0000000000460000-0x00000000006CA000-memory.dmp