Malware Analysis Report

2024-10-16 03:32

Sample ID 240822-axm5nasgnr
Target 2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber
SHA256 9581deeb070f51498358ac575bd6ec57843dc31bc0d4b4be222866cd4a08ddef
Tags
banload floxif backdoor discovery downloader dropper evasion 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

9581deeb070f51498358ac575bd6ec57843dc31bc0d4b4be222866cd4a08ddef

Threat Level: Known bad

The file 2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber was found to be: Known bad.

Malicious Activity Summary

banload floxif backdoor discovery downloader dropper evasion trojan upx

Floxif, Floodfix

Banload

Detects Floxif payload

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Checks BIOS information in registry

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Loads dropped DLL

Enumerates connected drives

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-22 00:35

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-22 00:35

Reported

2024-08-22 00:38

Platform

win7-20240705-en

Max time kernel

17s

Max time network

18s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe"

Signatures

Banload

trojan dropper downloader banload

Floxif, Floodfix

backdoor trojan floxif

Detects Floxif payload

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

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A

ACProtect 1.3x - 1.4x DLL software

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

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.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\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.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\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.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\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\Ole1Class\ = "WordDocument" C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\ProgID C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\RTFClassName C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\RTFClassName\MSWordWin2 C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\ = "Microsoft Word 2.0 Document" C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\AutoConvertTo\ = "{00020906-0000-0000-C000-000000000046}" C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\Ole1Class C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\ProgID\ = "WordDocument" C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D} C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\AutoConvertTo C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe

"C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 www.aieov.com udp
US 45.33.30.197:80 www.aieov.com tcp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2504-4-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2504-5-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2504-6-0x0000000001125000-0x0000000001126000-memory.dmp

memory/2504-7-0x0000000005680000-0x0000000005880000-memory.dmp

memory/2504-11-0x0000000005680000-0x0000000005880000-memory.dmp

memory/2504-22-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2504-23-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2504-27-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2504-25-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2504-28-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2504-32-0x0000000005680000-0x0000000005880000-memory.dmp

memory/2504-30-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2504-31-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2504-35-0x0000000005680000-0x0000000005880000-memory.dmp

memory/2504-38-0x0000000005680000-0x0000000005880000-memory.dmp

memory/2504-39-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2504-41-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-22 00:35

Reported

2024-08-22 00:38

Platform

win10v2004-20240802-en

Max time kernel

133s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe"

Signatures

Banload

trojan dropper downloader banload

Floxif, Floodfix

backdoor trojan floxif

Detects Floxif payload

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

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A

ACProtect 1.3x - 1.4x DLL software

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

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.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
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\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.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\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.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\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D} C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\ = "Generate Black Video" C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\InprocServer32\ = "C:\\Windows\\SysWOW64\\qedit.dll" C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1B94D19B-244F-8895-7F7E-815D376B122D}\InprocServer32\ThreadingModel = "Both" C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe

"C:\Users\Admin\AppData\Local\Temp\2024-08-22_695cf0e0e64b17b5ffea0ca22b96cae6_floxif_magniber.exe"

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=4304,i,12198811467968044966,17227406646827438786,262144 --variations-seed-version --mojo-platform-channel-handle=3880 /prefetch:8

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 5isohu.com udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 www.aieov.com udp
US 45.33.18.44:80 www.aieov.com tcp
US 8.8.8.8:53 44.18.33.45.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.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 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2412-6-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2412-7-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2412-8-0x00007FFE59E10000-0x00007FFE5A005000-memory.dmp

memory/2412-10-0x00000000057D0000-0x00000000059D0000-memory.dmp

memory/2412-13-0x00000000057D0000-0x00000000059D0000-memory.dmp

memory/2412-24-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2412-25-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2412-27-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2412-29-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2412-34-0x00000000057D0000-0x00000000059D0000-memory.dmp

memory/2412-30-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2412-32-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2412-39-0x00000000057D0000-0x00000000059D0000-memory.dmp

memory/2412-38-0x00000000057D0000-0x00000000059D0000-memory.dmp

memory/2412-33-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2412-41-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2412-43-0x00000000057D0000-0x00000000059D0000-memory.dmp

memory/2412-46-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2412-40-0x0000000000400000-0x0000000001E2F000-memory.dmp

memory/2412-47-0x0000000000400000-0x0000000001E2F000-memory.dmp