Malware Analysis Report

2025-01-02 07:20

Sample ID 240914-vtk64swcmc
Target 365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c
SHA256 365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c
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

365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c

Threat Level: Known bad

The file 365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c 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

Loads dropped DLL

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Enumerates connected drives

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-14 17:16

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-14 17:16

Reported

2024-09-14 17:19

Platform

win7-20240903-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.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\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.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\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.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\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.exe

"C:\Users\Admin\AppData\Local\Temp\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.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 45.33.23.183:80 www.aieov.com tcp

Files

memory/2296-3-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2296-16-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2296-14-0x0000000000170000-0x00000000001D7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-14 17:16

Reported

2024-09-14 17:19

Platform

win10v2004-20240802-en

Max time kernel

125s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.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\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.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\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.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\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.exe

"C:\Users\Admin\AppData\Local\Temp\365f5bcf960cbe33a9c429598bb1c2e3c0f399ef71313c6fd09b4a25e1f5262c.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=4020,i,9445584274764997943,12714240264001792460,262144 --variations-seed-version --mojo-platform-channel-handle=4108 /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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 www.aieov.com udp
US 45.56.79.23:80 www.aieov.com tcp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 23.79.56.45.in-addr.arpa udp
US 45.56.79.23:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 45.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2912-2-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2912-9-0x00000000008C1000-0x00000000008C2000-memory.dmp

memory/2912-18-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2912-17-0x00000000008C0000-0x0000000000927000-memory.dmp