Malware Analysis Report

2025-01-02 07:29

Sample ID 240816-gqvdqaygnd
Target 4221625fab292ba965c838b632dc2a40N.exe
SHA256 3cee9ffd53d6dceab964c8d3edfe0c63cfff4395e2d97b2a417c01e335a68f84
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

3cee9ffd53d6dceab964c8d3edfe0c63cfff4395e2d97b2a417c01e335a68f84

Threat Level: Known bad

The file 4221625fab292ba965c838b632dc2a40N.exe 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

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 use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-16 06:01

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-16 06:01

Reported

2024-08-16 06:03

Platform

win7-20240708-en

Max time kernel

16s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.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\4221625fab292ba965c838b632dc2a40N.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\4221625fab292ba965c838b632dc2a40N.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\4221625fab292ba965c838b632dc2a40N.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.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\4221625fab292ba965c838b632dc2a40N.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.exe

"C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.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 173.255.194.134:80 www.aieov.com tcp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2476-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2476-5-0x0000000000403000-0x0000000000406000-memory.dmp

memory/2476-11-0x0000000000400000-0x0000000000426000-memory.dmp

memory/2476-12-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-16 06:01

Reported

2024-08-16 06:03

Platform

win10v2004-20240802-en

Max time kernel

105s

Max time network

106s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.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\4221625fab292ba965c838b632dc2a40N.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\4221625fab292ba965c838b632dc2a40N.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\4221625fab292ba965c838b632dc2a40N.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.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\4221625fab292ba965c838b632dc2a40N.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.exe

"C:\Users\Admin\AppData\Local\Temp\4221625fab292ba965c838b632dc2a40N.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 www.aieov.com udp
US 45.33.20.235:80 www.aieov.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 235.20.33.45.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.33.20.235:80 www.aieov.com tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.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 150.171.28.10:443 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
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2844-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2844-5-0x0000000000403000-0x0000000000406000-memory.dmp

memory/2844-11-0x0000000000400000-0x0000000000426000-memory.dmp

memory/2844-14-0x0000000000400000-0x0000000000426000-memory.dmp

memory/2844-16-0x0000000010000000-0x0000000010030000-memory.dmp