Malware Analysis Report

2025-01-02 07:30

Sample ID 240816-gbdgnasclj
Target 8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe
SHA256 f2ca45e87d10973414c91834bbfc34ce41e8bc03069fd5f0ad85fa87bf4aa6e6
Tags
upx floxif backdoor discovery persistence privilege_escalation trojan
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

f2ca45e87d10973414c91834bbfc34ce41e8bc03069fd5f0ad85fa87bf4aa6e6

Threat Level: Known bad

The file 8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe was found to be: Known bad.

Malicious Activity Summary

upx floxif backdoor discovery persistence privilege_escalation trojan

Floxif, Floodfix

Detects Floxif payload

Event Triggered Execution: AppInit DLLs

Loads dropped DLL

UPX packed file

ACProtect 1.3x - 1.4x DLL software

Executes dropped EXE

Checks computer location settings

Enumerates connected drives

Drops file in Program Files directory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-16 05:37

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-16 05:37

Reported

2024-08-16 05:39

Platform

win7-20240704-en

Max time kernel

115s

Max time network

55s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\±¸±Û ¹ø¿ª µµ¿ì¹Ì (x64).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
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
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\8e64ac6dad3e1c2cbfb5a95bc67227a0N.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\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe N/A

Enumerates physical storage devices

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\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\±¸±Û ¹ø¿ª µµ¿ì¹Ì (x64).exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe

"C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe"

C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\±¸±Û ¹ø¿ª µµ¿ì¹Ì (x64).exe

"C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\±¸±Û ¹ø¿ª µµ¿ì¹Ì (x64).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 72.14.185.43:80 www.aieov.com tcp
US 72.14.185.43:80 www.aieov.com tcp
US 72.14.185.43:80 www.aieov.com tcp
US 72.14.185.43:80 www.aieov.com tcp
US 72.14.185.43:80 www.aieov.com tcp
US 72.14.185.43:80 www.aieov.com tcp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2112-3-0x0000000000400000-0x0000000000E3C000-memory.dmp

memory/2112-5-0x0000000010000000-0x0000000010030000-memory.dmp

\Users\Admin\AppData\Local\Temp\~sfx006D344889\±¸±Û ¹ø¿ª µµ¿ì¹Ì (x64).exe

MD5 6fcc2fd83755a5b1c035a7c32f66a744
SHA1 f715e62cea3dcf4a91407c026d1cae8b4d5afe27
SHA256 08921e5cff43d3ecc59d81c66fbc3923cf14d8cfee6cfe8a45b08db470e07ce0
SHA512 5ca0bba503c9f7817939e5f7708a2bda3cbe1f4afc101cb535732c281fab890e6d281a8d615c960c01d11ad9951f067e220e4f8110291e569cc36e403f4cee2a

C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\GoogleTranslator.ini

MD5 e36be135b86ab66b4572a1b0432bd5aa
SHA1 630fadac459972f5a087c559522082154a0f53cf
SHA256 5bbcdaae5d20c73c437908fa408be6179f58d3fa401661d323a9f4fa6fd6fffc
SHA512 35bc22d6fb5273a2b372f7ed61185420d337ee9d3b4bd747228b953fee18933e73aa24de0d184ce5fd18cd86e3816747e814fa61349c52dd1788b66b6d6dc073

C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\Lang.txt

MD5 4c7da0a5754ca00abc406a1fd6a91e96
SHA1 da9b2783807b3343f250d0260f270a541fdf34a9
SHA256 44f54e3e1f1aa1dd99df6ce89ac159ae110842f0f5bb1c9cfe14aed30f93ce56
SHA512 579f1abd6cd0b4f01aecb614b158aa90747096a1eb34a1c9960b0aff3ef4d83fa5a053b1bfad7cc5475c05e6275f2010c5bc36ca06aa692b75ea0c2f53d2b0f0

memory/2112-44-0x0000000000400000-0x0000000000E3C000-memory.dmp

memory/2112-47-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2112-46-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2112-48-0x0000000076766000-0x0000000076767000-memory.dmp

memory/2112-51-0x0000000076760000-0x0000000076795000-memory.dmp

memory/2112-53-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2112-54-0x0000000076760000-0x0000000076795000-memory.dmp

memory/2112-58-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2112-62-0x0000000010000000-0x0000000010030000-memory.dmp

C:\Program Files\Common Files\System\symsrv.dll.000

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/2112-66-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2112-70-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-16 05:37

Reported

2024-08-16 05:39

Platform

win10v2004-20240802-en

Max time kernel

115s

Max time network

110s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\±¸±Û ¹ø¿ª µµ¿ì¹Ì (x64).exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.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
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
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\8e64ac6dad3e1c2cbfb5a95bc67227a0N.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\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe N/A

Enumerates physical storage devices

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\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe

"C:\Users\Admin\AppData\Local\Temp\8e64ac6dad3e1c2cbfb5a95bc67227a0N.exe"

C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\±¸±Û ¹ø¿ª µµ¿ì¹Ì (x64).exe

"C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\±¸±Û ¹ø¿ª µµ¿ì¹Ì (x64).exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
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 www.aieov.com udp
US 45.33.18.44:80 www.aieov.com tcp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 44.18.33.45.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.33.18.44:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.33.18.44:80 www.aieov.com tcp
US 45.33.18.44:80 www.aieov.com tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 www.microsoft.com udp
GB 95.100.245.144:80 www.microsoft.com tcp
US 8.8.8.8:53 144.245.100.95.in-addr.arpa udp
US 45.33.18.44:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.33.18.44:80 www.aieov.com tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net 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

memory/2072-0-0x0000000000400000-0x0000000000E3C000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2072-4-0x0000000010000000-0x0000000010030000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\±¸±Û ¹ø¿ª µµ¿ì¹Ì (x64).exe

MD5 6fcc2fd83755a5b1c035a7c32f66a744
SHA1 f715e62cea3dcf4a91407c026d1cae8b4d5afe27
SHA256 08921e5cff43d3ecc59d81c66fbc3923cf14d8cfee6cfe8a45b08db470e07ce0
SHA512 5ca0bba503c9f7817939e5f7708a2bda3cbe1f4afc101cb535732c281fab890e6d281a8d615c960c01d11ad9951f067e220e4f8110291e569cc36e403f4cee2a

C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\GoogleTranslator.ini

MD5 e36be135b86ab66b4572a1b0432bd5aa
SHA1 630fadac459972f5a087c559522082154a0f53cf
SHA256 5bbcdaae5d20c73c437908fa408be6179f58d3fa401661d323a9f4fa6fd6fffc
SHA512 35bc22d6fb5273a2b372f7ed61185420d337ee9d3b4bd747228b953fee18933e73aa24de0d184ce5fd18cd86e3816747e814fa61349c52dd1788b66b6d6dc073

C:\Users\Admin\AppData\Local\Temp\~sfx006D344889\Lang.txt

MD5 4c7da0a5754ca00abc406a1fd6a91e96
SHA1 da9b2783807b3343f250d0260f270a541fdf34a9
SHA256 44f54e3e1f1aa1dd99df6ce89ac159ae110842f0f5bb1c9cfe14aed30f93ce56
SHA512 579f1abd6cd0b4f01aecb614b158aa90747096a1eb34a1c9960b0aff3ef4d83fa5a053b1bfad7cc5475c05e6275f2010c5bc36ca06aa692b75ea0c2f53d2b0f0

memory/2072-40-0x00000000755E5000-0x00000000755E6000-memory.dmp

memory/2072-41-0x00000000755D0000-0x0000000075633000-memory.dmp

memory/2072-44-0x00000000755D0000-0x0000000075633000-memory.dmp

memory/2072-45-0x0000000000400000-0x0000000000E3C000-memory.dmp

memory/2072-46-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2072-48-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2072-53-0x00000000755D0000-0x0000000075633000-memory.dmp

C:\Program Files\Common Files\System\symsrv.dll.000

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/2072-57-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2072-61-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2072-73-0x0000000010000000-0x0000000010030000-memory.dmp