Malware Analysis Report

2024-11-13 20:02

Sample ID 240909-s7tdjawdmm
Target 2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif
SHA256 b8575811b6b39a6c023d012ca1ebaedfa878b17a754001be992e4830413a8d96
Tags
floxif backdoor discovery trojan upx
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

b8575811b6b39a6c023d012ca1ebaedfa878b17a754001be992e4830413a8d96

Threat Level: Known bad

The file 2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif was found to be: Known bad.

Malicious Activity Summary

floxif backdoor discovery trojan upx

Floxif, Floodfix

Detects Floxif payload

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Loads dropped DLL

Enumerates connected drives

Drops file in Program Files directory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-09 15:46

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-09 15:46

Reported

2024-09-09 15:47

Platform

win10v2004-20240802-en

Max time kernel

30s

Max time network

32s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.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

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.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\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.exe N/A

Enumerates physical storage devices

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\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.exe

"C:\Users\Admin\AppData\Local\Temp\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.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 5isohu.com udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/4684-4-0x0000000010000000-0x0000000010030000-memory.dmp

memory/4684-12-0x0000000010000000-0x0000000010030000-memory.dmp

memory/4684-10-0x0000000000840000-0x0000000000A22000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-09 15:46

Reported

2024-09-09 15:49

Platform

win7-20240903-en

Max time kernel

118s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.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

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.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\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.exe N/A

Enumerates physical storage devices

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\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.exe

"C:\Users\Admin\AppData\Local\Temp\2024-09-09_62c825c79cd4c877d85588775c571940_bkransomware_floxif.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 5isohu.com udp

Files

memory/2792-3-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2792-11-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2792-9-0x0000000000BB0000-0x0000000000D92000-memory.dmp