Malware Analysis Report

2024-12-08 02:41

Sample ID 240912-hwsyhsxbql
Target b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311
SHA256 b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311
Tags
floxif backdoor discovery trojan upx persistence privilege_escalation
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

b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311

Threat Level: Known bad

The file b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311 was found to be: Known bad.

Malicious Activity Summary

floxif backdoor discovery trojan upx persistence privilege_escalation

Floxif, Floodfix

Detects Floxif payload

Event Triggered Execution: AppInit DLLs

ACProtect 1.3x - 1.4x DLL software

Loads dropped DLL

UPX packed file

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-12 07:05

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-12 07:05

Reported

2024-09-12 07:08

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.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

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\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.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\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.exe

"C:\Users\Admin\AppData\Local\Temp\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2836-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2836-5-0x00000000003A0000-0x00000000003C9000-memory.dmp

memory/2836-7-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-12 07:05

Reported

2024-09-12 07:08

Platform

win7-20240729-en

Max time kernel

16s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.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

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\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.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\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.exe

"C:\Users\Admin\AppData\Local\Temp\b9a6a6271e6df4ddeb7df597e276d813d874ba80de714cc11ae5cdf6be432311.exe"

Network

N/A

Files

memory/1936-3-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/1936-6-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1936-5-0x00000000011E0000-0x0000000001209000-memory.dmp