Malware Analysis Report

2025-06-16 02:05

Sample ID 240728-ba19fa1gmc
Target 2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid
SHA256 1c7ce73f2c7f54916b00aeefc4f423e364411782e6e239f2f74417806a293a49
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

1c7ce73f2c7f54916b00aeefc4f423e364411782e6e239f2f74417806a293a49

Threat Level: Known bad

The file 2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid 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

Program crash

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-28 00:57

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-28 00:57

Reported

2024-07-28 01:07

Platform

win7-20240708-en

Max time kernel

141s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.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\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.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\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.exe

"C:\Users\Admin\AppData\Local\Temp\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 784 -s 228

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/784-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/784-5-0x000000006620F000-0x0000000066212000-memory.dmp

memory/784-6-0x000000007EDE0000-0x000000007EFA7000-memory.dmp

memory/784-13-0x000000007EDE0000-0x000000007EFA7000-memory.dmp

memory/784-12-0x000000007EDE0000-0x000000007EFA7000-memory.dmp

memory/784-15-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-28 00:57

Reported

2024-07-28 01:07

Platform

win10v2004-20240709-en

Max time kernel

145s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.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

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.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\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.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\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.exe

"C:\Users\Admin\AppData\Local\Temp\2024-07-28_5198d9055eb666dd62c3da4c543f8c95_bkransomware_floxif_hijackloader_icedid.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3964 -ip 3964

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3964 -s 424

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 www.aieov.com udp
US 45.33.23.183:80 www.aieov.com tcp
US 8.8.8.8:53 183.23.33.45.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.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

memory/3964-2-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/3964-7-0x000000007FC80000-0x000000007FE47000-memory.dmp

memory/3964-13-0x000000007FC80000-0x000000007FE47000-memory.dmp

memory/3964-14-0x000000007FC80000-0x000000007FE47000-memory.dmp

memory/3964-6-0x000000006620F000-0x0000000066212000-memory.dmp

memory/3964-22-0x0000000066200000-0x0000000066258000-memory.dmp

memory/3964-24-0x0000000010000000-0x0000000010030000-memory.dmp