Malware Analysis Report

2024-12-08 02:49

Sample ID 240818-hk2fhs1ekd
Target 372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b
SHA256 372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b
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

372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b

Threat Level: Known bad

The file 372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b 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

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Program crash

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-18 06:48

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-18 06:48

Reported

2024-08-18 06:51

Platform

win7-20240708-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b.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\372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b.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\372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b.exe

"C:\Users\Admin\AppData\Local\Temp\372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b.exe"

Network

N/A

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2976-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2976-5-0x0000000000880000-0x00000000008B5000-memory.dmp

memory/2976-6-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-18 06:48

Reported

2024-08-18 06:51

Platform

win10v2004-20240802-en

Max time kernel

135s

Max time network

136s

Command Line

"C:\Users\Admin\AppData\Local\Temp\372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b.exe

"C:\Users\Admin\AppData\Local\Temp\372f016d034fc0d1b725cd4089326c781c5c68a1e6c9960ca7aa7dd34055220b.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4136 -ip 4136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 180

Network

Country Destination Domain Proto
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 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.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 88.156.103.20.in-addr.arpa udp

Files

N/A