Malware Analysis Report

2025-01-02 07:25

Sample ID 240913-wdxqmszhke
Target 20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif
SHA256 6762027dd091793e85a117a814dcefceccbb2f762c8c6c8f0f67f8c2152d4b83
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

6762027dd091793e85a117a814dcefceccbb2f762c8c6c8f0f67f8c2152d4b83

Threat Level: Known bad

The file 20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif 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

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-13 17:48

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-13 17:48

Reported

2024-09-13 17:51

Platform

win7-20240903-en

Max time kernel

13s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.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\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.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\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.exe

"C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.exe"

Network

N/A

Files

memory/2052-3-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2052-8-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2052-6-0x0000000000DA0000-0x0000000000FDD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-13 17:48

Reported

2024-09-13 17:51

Platform

win10v2004-20240802-en

Max time kernel

125s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.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\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.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\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.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\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.exe

"C:\Users\Admin\AppData\Local\Temp\20240913cc6f199a6f24d777c2c7bd7c1d72de39bkransomwarefloxif.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3924,i,3861745594156495651,17595114179815238301,262144 --variations-seed-version --mojo-platform-channel-handle=4300 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 36.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 37.56.20.217.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/1088-4-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1088-9-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1088-7-0x0000000000CB0000-0x0000000000EED000-memory.dmp