Malware Analysis Report

2025-08-05 10:48

Sample ID 241017-br8d3sxhkj
Target 2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid
SHA256 76ce756e174ee90799c0218a75927b01e77a0f61c0313253ea1817778e102c6b
Tags
floxif backdoor bootkit discovery persistence 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

76ce756e174ee90799c0218a75927b01e77a0f61c0313253ea1817778e102c6b

Threat Level: Known bad

The file 2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid was found to be: Known bad.

Malicious Activity Summary

floxif backdoor bootkit discovery persistence trojan upx

Floxif, Floodfix

Detects Floxif payload

ACProtect 1.3x - 1.4x DLL software

Loads dropped DLL

Writes to the Master Boot Record (MBR)

Enumerates connected drives

UPX packed file

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-17 01:23

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-17 01:23

Reported

2024-10-17 01:26

Platform

win7-20240903-en

Max time kernel

142s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.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
N/A N/A N/A N/A
N/A N/A N/A N/A
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\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_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\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe

"C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.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 45.33.20.235:80 www.aieov.com tcp
US 45.33.20.235:80 www.aieov.com tcp
US 45.33.20.235:80 www.aieov.com tcp
US 45.33.20.235:80 www.aieov.com tcp
US 45.33.20.235:80 www.aieov.com tcp
US 45.33.20.235:80 www.aieov.com tcp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/1780-5-0x000000000041C000-0x0000000000420000-memory.dmp

memory/1780-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1780-11-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1780-13-0x0000000000400000-0x000000000050F000-memory.dmp

memory/1780-16-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1780-19-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1780-22-0x0000000010000000-0x0000000010030000-memory.dmp

C:\Program Files\Common Files\System\symsrv.dll.000

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/1780-27-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1780-28-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-17 01:23

Reported

2024-10-17 01:26

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.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
N/A N/A N/A N/A
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\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_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\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe

"C:\Users\Admin\AppData\Local\Temp\2024-10-17_edc233da84df0ff3e06ce73615149d5c_floxif_icedid.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 www.aieov.com udp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 196.19.79.45.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.79.19.196:80 www.aieov.com tcp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 73.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.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 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 9.179.89.13.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/3144-4-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3144-6-0x000000000041C000-0x0000000000420000-memory.dmp

memory/3144-12-0x0000000000400000-0x000000000050F000-memory.dmp

memory/3144-13-0x0000000000400000-0x000000000050F000-memory.dmp

memory/3144-16-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3144-17-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3144-22-0x0000000010000000-0x0000000010030000-memory.dmp

C:\Program Files\Common Files\System\symsrv.dll.000

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/3144-27-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3144-33-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3144-39-0x0000000000400000-0x000000000050F000-memory.dmp