Malware Analysis Report

2025-01-02 07:29

Sample ID 240816-gknc8ayekg
Target 6517b89edb9e870e8852eaaba3cf5c80N.exe
SHA256 88774f95c8e7e920140b5b67adcd3c59e11221120aa875760532024b41c0cebe
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: 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

88774f95c8e7e920140b5b67adcd3c59e11221120aa875760532024b41c0cebe

Threat Level: Known bad

The file 6517b89edb9e870e8852eaaba3cf5c80N.exe 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

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-16 05:51

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-16 05:51

Reported

2024-08-16 05:54

Platform

win10v2004-20240802-en

Max time kernel

115s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.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\6517b89edb9e870e8852eaaba3cf5c80N.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

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.exe N/A
File created C:\Program Files\Common Files\System\symsrv.dll C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.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\6517b89edb9e870e8852eaaba3cf5c80N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.exe

"C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.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=1296,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=4296 /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 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 www.aieov.com udp
US 45.56.79.23:80 www.aieov.com tcp
US 8.8.8.8:53 23.79.56.45.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.56.79.23:80 www.aieov.com tcp
US 45.56.79.23:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.56.79.23:80 www.aieov.com tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.56.79.23:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.56.79.23:80 www.aieov.com tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.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 8.8.8.8:53 43.58.199.20.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2896-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2896-5-0x0000000000771000-0x0000000000772000-memory.dmp

memory/2896-13-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2896-14-0x0000000000770000-0x00000000007D0000-memory.dmp

memory/2896-21-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/2896-27-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2896-39-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-16 05:51

Reported

2024-08-16 05:54

Platform

win7-20240708-en

Max time kernel

114s

Max time network

57s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.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\6517b89edb9e870e8852eaaba3cf5c80N.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\6517b89edb9e870e8852eaaba3cf5c80N.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\6517b89edb9e870e8852eaaba3cf5c80N.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.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\6517b89edb9e870e8852eaaba3cf5c80N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.exe

"C:\Users\Admin\AppData\Local\Temp\6517b89edb9e870e8852eaaba3cf5c80N.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 45.79.19.196:80 www.aieov.com tcp
US 45.79.19.196:80 www.aieov.com tcp
US 45.79.19.196:80 www.aieov.com tcp
US 45.79.19.196:80 www.aieov.com tcp
US 45.79.19.196:80 www.aieov.com tcp
US 45.79.19.196:80 www.aieov.com tcp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2988-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2988-10-0x00000000012D0000-0x0000000001330000-memory.dmp

memory/2988-12-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2988-11-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2988-16-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2988-20-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2988-24-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/2988-28-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2988-32-0x0000000010000000-0x0000000010030000-memory.dmp