Malware Analysis Report

2025-01-02 07:22

Sample ID 240914-1b37vsxfjb
Target b0c9046c86091df27b548d62e9788080N
SHA256 c43ec2685a469d8e2a00a3ed29dd861a850625324c9433161ea62345b9a8ec77
Tags
floxif xred 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

c43ec2685a469d8e2a00a3ed29dd861a850625324c9433161ea62345b9a8ec77

Threat Level: Known bad

The file b0c9046c86091df27b548d62e9788080N was found to be: Known bad.

Malicious Activity Summary

floxif xred backdoor discovery persistence privilege_escalation trojan upx

Floxif, Floodfix

Floxif family

Xred

Xred family

Detects Floxif payload

Event Triggered Execution: AppInit DLLs

Loads dropped DLL

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-14 21:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-14 21:29

Reported

2024-09-14 21:31

Platform

win7-20240903-en

Max time kernel

111s

Max time network

58s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b0c9046c86091df27b548d62e9788080N.exe"

Signatures

Floxif family

floxif

Floxif, Floodfix

backdoor trojan floxif

Xred

backdoor xred

Xred family

xred

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\b0c9046c86091df27b548d62e9788080N.exe N/A
N/A N/A C:\Windows\SysWOW64\WerFault.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

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\b0c9046c86091df27b548d62e9788080N.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\b0c9046c86091df27b548d62e9788080N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b0c9046c86091df27b548d62e9788080N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b0c9046c86091df27b548d62e9788080N.exe

"C:\Users\Admin\AppData\Local\Temp\b0c9046c86091df27b548d62e9788080N.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 468 -s 308

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 45.33.18.44:80 www.aieov.com tcp
US 45.33.18.44:80 www.aieov.com tcp
US 45.33.18.44:80 www.aieov.com tcp
US 45.33.18.44:80 www.aieov.com tcp
US 45.33.18.44:80 www.aieov.com tcp
US 45.33.18.44:80 www.aieov.com tcp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/468-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/468-8-0x0000000000400000-0x00000000004C2000-memory.dmp

memory/468-10-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-14 21:29

Reported

2024-09-14 21:31

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

102s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b0c9046c86091df27b548d62e9788080N.exe"

Signatures

Floxif family

floxif

Floxif, Floodfix

backdoor trojan floxif

Xred

backdoor xred

Xred family

xred

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\b0c9046c86091df27b548d62e9788080N.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

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\b0c9046c86091df27b548d62e9788080N.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\b0c9046c86091df27b548d62e9788080N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b0c9046c86091df27b548d62e9788080N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b0c9046c86091df27b548d62e9788080N.exe

"C:\Users\Admin\AppData\Local\Temp\b0c9046c86091df27b548d62e9788080N.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4284 -ip 4284

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4284 -s 580

Network

Country Destination Domain Proto
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 36.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
IE 52.111.236.23:443 tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/4284-4-0x0000000010000000-0x0000000010030000-memory.dmp

memory/4284-8-0x0000000000400000-0x00000000004C2000-memory.dmp

memory/4284-10-0x0000000010000000-0x0000000010030000-memory.dmp